141-726: The San Francisco Bay Area , commonly known as the Bay Area , is a region of California surrounding and including San Francisco Bay , and anchored by the cities of San Francisco , Oakland , and San Jose . The Association of Bay Area Governments defines the Bay Area as including the nine counties that border the estuaries of San Francisco Bay, San Pablo Bay , and Suisun Bay : Alameda , Contra Costa , Marin , Napa , San Mateo , Santa Clara , Solano , Sonoma , and San Francisco . Other definitions may be either smaller or larger, and may include neighboring counties which are not officially part of
282-694: A World Series game between two Bay Area baseball teams, the Loma Prieta earthquake struck and caused widespread infrastructural damage, including the failure of the Bay Bridge , a major link between San Francisco and Oakland . Even so, the Bay Area's technology industry continued to expand and growth in Silicon Valley accelerated: the United States census confirmed that year that San Jose had overtaken San Francisco in terms of population. The commercialization of
423-483: A decentralized structure. Its major commercial, financial, and cultural institutions are geographically dispersed rather than being concentrated in a single downtown or central area. Also, the population density of Los Angeles proper is low (approximately 8,300 people per square mile) when compared to some other large American cities such as New York City (27,500), San Francisco (17,000), Boston (13,300), and Chicago (11,800). Densities are particularly high within
564-620: A 2021 population of 12,997,353. The MSA is in turn made up of two "metropolitan divisions": The MSA is the most populous metropolitan area in the Western United States and second-most populous in the United States. It has at its core the Los Angeles – Long Beach – Anaheim urban area , which had a population of 12,237,376 as of the 2020 census. The U.S. Census Bureau also defines a wider commercial region based on commuting patterns,
705-465: A 5-mile radius of downtown, where some neighborhoods exceed 20,000 people per square mile. What gives the entire Los Angeles metro region a high density is the fact that many of the city's suburbs and satellite cities have high density rates. Within its urbanized areas, Los Angeles is noted for having small lot sizes and low-rise buildings. Buildings in the area are low when compared to other large cities, mainly due to zoning regulations. Los Angeles became
846-447: A complex multimodal transportation network. The earliest archaeological evidence of human settlements in the Bay Area dates back to 8000–10,000 BC. The oral tradition of the Ohlone and Miwok people suggests they have been living in the Bay Area for several hundreds if not thousands of years. The Spanish empire claimed the area beginning in the early period of Spanish colonization of
987-561: A cross (†) in the table below. According to the 2020 census, there were 18,644,680 people living in the Greater Los Angeles Area. The racial makeup of the area was 29.4% White (23.0% Non-Hispanic European and 6.4% Non-Hispanic Middle Eastern), 13.8% Asian (Non-Hispanic), 0.2% Pacific Islander (Non-Hispanic), 6.1% African American (Non-Hispanic), 0.2% Native American (Non-Hispanic), 0.5% from other races (Non-Hispanic), and 3.3% from two or more races (Non-Hispanic). 46.3% of
1128-566: A few years earlier, which now provides drinking water for 2.4 million people in the Bay Area. By 1915, the city had been sufficiently rebuilt and advertised itself to the world during the Panama Pacific Exposition that year, although the effects of the quake hastened the loss of the region's dominant status in California to the Los Angeles metropolitan area . During the 1929 stock market crash and subsequent economic depression , not
1269-494: A first in the United States, and four years later a majority of voters in the Bay Area rejected California Proposition 8 , which sought to constitutionally restrict marriage to opposite-sex couples but ultimately passed statewide. The Bay Area was also the center of contentious protests concerning racial and economic inequality . In 2009, an African-American man named Oscar Grant was fatally shot by Bay Area Rapid Transit police officers , precipitating widespread protests across
1410-519: A major city just as the Pacific Electric Railway spread population to smaller cities much as interurbans did in East Coast cities. In the first decades of the twentieth century, the area was marked by a network of fairly dense but separate cities linked by rail. The ascendance of the automobile helped fill in the gaps between these commuter towns with lower-density settlements. Starting in
1551-719: A major domestic military and naval hub, with large shipyards constructed in Sausalito and across the East Bay to build ships for the war effort. The Army's San Francisco Port of Embarkation was the primary origin for Army forces shipping out to the Pacific Theater of Operations . That command consisted of fourteen installations including Fort Mason, the Oakland Army Base , Camp Stoneman and Fort McDowell in San Francisco Bay and
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#17328369305151692-464: A rate of one thousand per week on their way to California's interior, including the first large influx of Chinese immigrants to the U.S. The rush was so great that vessels were abandoned by the hundreds in San Francisco's ports as crews rushed to the goldfields. The unprecedented influx of new arrivals spread the nascent government authorities thin, and the military was unable to prevent desertions. As
1833-460: A result, numerous vigilante groups formed to provide order, but many tasked themselves with forcibly moving or killing local Native Americans , and by the end of the Gold Rush, two thirds of the indigenous population had been killed. During this same time, a constitutional convention was called to determine California's application for statehood into the United States. After statehood was granted,
1974-492: A significant earthquake hazard. Among the more well-understood faults, as of 2014, scientists estimate a 72% probability of a magnitude 6.7 earthquake occurring along either the Hayward, Rogers Creek, or San Andreas fault, with an earthquake more likely to occur in the East Bay's Hayward Fault. Two of the largest earthquakes in recent history were the 1906 San Francisco earthquake and the 1989 Loma Prieta earthquake . The Bay Area
2115-520: A single San Francisco-based bank failed, while the region attempted to spur job growth by simultaneously undertaking two large infrastructure projects: construction of the Golden Gate Bridge , which would connect San Francisco with Marin County , and the Bay Bridge , which would connect San Francisco with Oakland and the East Bay. After the United States joined World War II in 1941, the Bay Area became
2256-605: A single county, Alameda. Diverse assemblages adjoin in complex arrangements due to offsets along the many faults (both active and stable) in the area. As a consequence, many types of rock and soil are found in the region. The oldest rocks are metamorphic rocks that are associated with granite in the Salinian Block west of the San Andreas Fault . These were formed from sedimentary rocks of sandstone , limestone , and shale in uplifted seabeds. Volcanic deposits also exist in
2397-409: A stampede of wealth-seekers descending on Sutter's Mill . The Bay Area's population quickly emptied out as laborers, clerks, waiters, and servants joined the rush to find gold, and California's first newspaper, The Californian , was forced to announce a temporary freeze in new issues due to labor shortages. By the end of 1849, news had spread across the world and newcomers flooded into the Bay Area at
2538-648: A storm sank the San Agustin and killed between 7 and 12 people. On December 8, 80 remaining crew members set sail on the San Buenaventura , a launch which was partially constructed en route from the Philippines . Seeking the fastest route south, the expedition sailed past the Golden Gate, arriving at Puerto de Chacala, Mexico on January 17, 1596. The Bay Area estuaries remained unknown to Europeans until members of
2679-745: Is accepted by most local governmental agencies including San Francisco Regional Water Quality Control Board , Bay Area Air Quality Management District , the San Francisco Bay Restoration Authority , the Metropolitan Transportation Commission , and the Association of Bay Area Governments , the latter two of which partner to deliver a Bay Area Census using the nine-county definition. Various U.S. Federal government agencies use definitions that differ from their local counterparts' nine-county definition. For example,
2820-403: Is additionally known for the complexity of its landforms, the result of millions of years of tectonic plate movements. Because the Bay Area is crossed by six major earthquake faults , the region is particularly exposed to hazards presented by large earthquakes. The climate is temperate and conducive to outdoor recreational and athletic activities such as hiking, running, and cycling. The Bay Area
2961-820: Is home to a complex network of watersheds, marshes, rivers, creeks, reservoirs, and bays that predominantly drain into the San Francisco Bay and Pacific Ocean. The largest bodies of water in the Bay Area are the San Francisco , San Pablo , and Suisun estuaries. Major rivers of the North Bay include the Napa River , the Petaluma River , the Gualala River , and the Russian River ; the former two drain into San Pablo Bay ,
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#17328369305153102-468: Is host to five professional sports teams and is a cultural center for music, theater, and the arts. It is also host to numerous higher education institutions, including research universities such as the University of California, Berkeley , and Stanford University , the latter known for helping to create the high tech center called Silicon Valley . Home to 101 municipalities and 9 counties, governance in
3243-563: Is known for its tourist attractions, such as Disneyland , Knott's Berry Farm , its several pristine beaches and coastline, and its wealthier areas, featured in television shows such as The O.C. None of the original downtowns serves as the central urban core for the county, but there are important clusters of business and culture in Downtown Santa Ana and in three edge cities : the Anaheim–Santa Ana edge city from Disneyland to
3384-462: Is largely influenced by the cold California Current , which penetrates the natural mountainous barrier along the coast by traveling through various gaps. In terms of precipitation , this means that the Bay Area has pronounced seasons. The winter season, which roughly runs between November and March, is the source of about 82% of annual precipitation in the area. In the South Bay and further inland, while
3525-565: Is not part of it as the two urban areas are not geographically contiguous due to the presence of Camp Pendleton . However, both form part of the Southern California Megalopolis which extends into Tijuana , Baja California , Mexico . The Los Angeles metropolitan area is defined by the U.S. Office of Management and Budget as the Los Angeles–Long Beach–Anaheim, CA Metropolitan Statistical Area (MSA), with
3666-450: Is the second-largest metropolitan area in the country, behind New York , as well as one of the largest megacities in the world . In addition to being the nexus of the global entertainment industry, including films, television, and recorded music, Greater Los Angeles is also an important center of international trade, education, media, business, tourism, technology, and sports. It is the third-largest metropolitan area by nominal GDP in
3807-404: The "New York–Newark" Urbanized Area had a population density of 5,309 per square mile (2,050/km ). Los Angeles' reputation for sprawl is due to the fact that the city grew from relative obscurity to one of the country's ten largest cities (i.e. 10th largest city in 1920), at a time when suburban patterns of growth first became possible due to electric streetcars and automobiles. The city was also
3948-580: The Bank of Italy (now known as the Bank of America ), had managed to retrieve the money from his bank's vaults before fires broke out through the city and was the only bank with liquid funds readily available and was instrumental in loaning out funds for rebuilding efforts. Congress immediately approved plans for a reservoir in Hetch Hetchy Valley in Yosemite National Park , a plan they had denied
4089-601: The Federal Communications Commission (FCC) which regulates broadcast, cable, and satellite transmissions, includes nearby Colusa , Lake and Mendocino counties in their " San Francisco - Oakland - San Jose " media market , but excludes eastern Solano County. On the other hand, the United States Office of Management and Budget , which designates metropolitan statistical areas (MSAs) and combined statistical areas (CSA) for populated regions across
4230-579: The Golden Gate or the estuaries, likely due to fog. Sir Francis Drake became the first European to land in the area and claim it in June 1579, when he landed at Drakes Bay near Point Reyes. Even though he claimed the region for Queen Elizabeth I as Nova Albion or New Albion , the English made no immediate follow up to the claim. In 1595, Philip II of Spain tasked Sebastião Rodrigues Soromenho with mapping
4371-679: The Hayward Fault Zone , Concord-Green Valley Fault , Calaveras Fault , Clayton-Marsh Creek-Greenville Fault , Rodgers Creek Fault , and the San Gregorio Fault . Significant blind thrust faults (faults with near vertical motion and no surface ruptures) are associated with portions of the Santa Cruz Mountains and the northern reaches of the Diablo Range and Mount Diablo . These "hidden" faults, which are not as well known, pose
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4512-635: The Hayward fault , and the Diablo Range , which includes Mount Diablo and Mount Hamilton and runs along the Calaveras fault . In total, the Bay Area is traversed by seven major fault systems with hundreds of related faults, all of which are stressed by the relative motion between the Pacific Plate and the North American Plate or by compressive stresses between these plates. The fault systems include
4653-510: The Internet in the middle of the decade rapidly created a speculative bubble in the high-tech economy known as the dot-com bubble . This bubble began collapsing in the early 2000s and the industry continued contracting for the next few years, nearly wiping out the market. Companies like Amazon.com and Google managed to weather the crash however, and following the industry's return to normalcy, their market value increased significantly. Even as
4794-708: The Los Angeles–Long Beach, CA Combined Statistical Area (CSA), more commonly known as the Greater Los Angeles Area, with an estimated population of 18,316,743 in 2023. The total land area of the CSA is 33,955 sq. mi (87,945 km ). The CSA includes three component metropolitan areas: Nearly all of the metropolitan area of Greater Los Angeles is located within the homelands of the Tongva , otherwise referred to as Tovaangar . Los Angeles has long been famous for its sprawl , but this has to do more with its status in history as
4935-601: The North Pacific High through the Golden Gate, which creates the city's characteristic cool winds and fog . The microclimate phenomenon is most pronounced during this time, when fog penetration is at its maximum in areas near the Golden Gate strait, while the South Bay and areas further inland are sunny and dry. Along the San Francisco peninsula, gaps in the Santa Cruz Mountains , one south of San Bruno Mountain and another in Crystal Springs, allow oceanic weather into
5076-690: The Orange Crush interchange ( Orange , Santa Ana), the South Coast Plaza–John Wayne Airport edge city (Santa Ana, Costa Mesa , Irvine ), and Irvine's Spectrum edge city. Orange County is sometimes figuratively divided into "North County" and "South County", with North Orange County including cities such as Anaheim , Fullerton , and Santa Ana , and is the older, more ethnically diverse and more densely built-up area closer to Los Angeles. South County, defined variously as beginning with either Costa Mesa or Irvine and includes cities to
5217-538: The Pacific Ocean on the west and the bay on the east and are characterized by their mountainous and woody terrain. Sonoma and Napa counties are known internationally for their grape vineyards and wineries , and Solano County to the east, centered around Vallejo , is the fastest growing region in the Bay Area. The " Peninsula " subregion includes the cities and towns on the San Francisco Peninsula, excluding
5358-596: The Portolá expedition , while trekking along the California coast, encountered them in 1769 when the Golden Gate blocked their continued journey north. Several missions were founded in the Bay Area during this period. In 1806, a Spanish expedition led by Gabriel Moraga began at the Presidio, traveled south of the bay, and then east to explore the San Joaquin Valley . In 1821, Mexico gained its independence from Spain and
5499-573: The San Bernardino National Forest to the east. Additionally, the southwest portion of Riverside County, centered on the city of Temecula is more economically linked to San Diego county, with its growth largely being driven by migrants from San Diego seeking more affordable housing similar to how northwestern Riverside county's growth was driven by migrants from Orange County and Los Angeles seeking more affordable housing. However, with clear northern and southern limits to expansion,
5640-581: The San Joaquin River Delta , causing a cooling effect in Stockton and Sacramento , so that these cities are also cooler than their Central Valley counterparts in the south. The Bay Area is home to a diverse array of wildlife and, along with the connected San Joaquin River Delta represents one of California's most important ecological habitats. California's Dungeness crab , Pacific halibut , and
5781-646: The Santa Monica Mountains , the San Gabriel Mountains , and the Mojave Desert . Actual land development in these regions occurs on the fringes of incorporated cities, some of which have been fully developed, such as the cities of Palmdale and Lancaster . While there is not an official designation for the regions that comprise Greater Los Angeles, one authority, the Los Angeles Times , divides
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5922-949: The Sunset Strip in West Hollywood , Universal City , the Warner Center in Woodland Hills , and Sherman Oaks and Encino , notable for existing alongside extensive suburban development. In fact, the Los Angeles area is considered a classic example of a metropolitan area that developed in such fashion. Furthermore, since the COVID-19 pandemic Downtown Los Angeles has experienced staggering commercial vacancy rates, urban plight, homelessness, drug use, and crime. Entire skyscrapers were reportedly sold for less than large estates in Bel Air. Within
6063-607: The US 101 corridor. Making the US 101 a full freeway in the 1960s and expansions that followed helped make commuting to Los Angeles easier and opened the way for development westward. Development in Ventura County and along the US 101 corridor remains controversial, with open-space advocates battling those who feel business development is necessary to economic growth. Although the area still has abundant amount of open space and land, almost all of it
6204-656: The USS ; Portsmouth into the bay and seized San Francisco, which was then known as Yerba Buena , and raised the American flag for the first time over Portsmouth Square . In 1848, James W. Marshall 's discovery of gold in the American River sparked the California Gold Rush , and within half a year 4,000 men were panning for gold along the river and finding $ 50,000 per day. The promise of fabulous riches quickly led to
6345-608: The University of California, Berkeley Richard Walker claimed that "no other U.S. city-region is as definitionally challenged [as the Bay Area]." When the region began to rapidly develop during and immediately after World War II , local planners settled on a nine-county definition for the Bay Area, consisting of the counties that directly border the San Francisco , San Pablo , and Suisun estuaries : Alameda , Contra Costa , Marin , Napa , San Francisco , San Mateo , Santa Clara , Solano , and Sonoma counties. Today, this definition
6486-483: The gay rights movement . At the same time, parts of San Mateo and Santa Clara counties began to rapidly develop from an agrarian economy into a hotbed of the high-tech industry . Fred Terman , the director of a top-secret research project at Harvard University during World War II, joined the faculty at Stanford University in order to reshape the university's engineering department. His students, including David Packard and William Hewlett , would later help usher in
6627-464: The osprey . In 1927, zoologist Joseph Grinnell wrote that osprey were only rare visitors to the San Francisco Bay Area, although he noted records of one or two used nests in the broken tops of redwood trees along the Russian River . In 1989, the southern breeding range of the osprey in the Bay Area was Kent Lake , although osprey were noted to be extending their range further south in
6768-444: The west coast of the United States , including populations residing in tributaries to San Francisco Bay. California Coast Chinook salmon were historically native to the Guadalupe River in San Francisco Bay, and Chinook salmon runs persist today in the Guadalupe River, Coyote Creek , Napa River , and Walnut Creek . Industrial, mining, and other uses of mercury have resulted in a widespread distribution of that poisonous metal in
6909-483: The "poster child" of large cities that grew up with suburban-style patterns of development, rather than how it ranks in sprawl among American metro areas today, now that suburban and exurban -style development is present across the country. The Los Angeles–Orange County metro area was the most densely populated "urbanized area" (as defined by the United States Census Bureau ) in the United States in 2000, with 7,068 inhabitants per square mile (2,729/km ). For comparison,
7050-419: The 1980s an effort to re-introduce the species to the area began with the Santa Cruz Predatory Bird Research Group and the San Francisco Zoo importing birds and eggs from Vancouver Island and northeastern California, and there are now nineteen nesting couples in eight of the Bay Area's nine counties. Other once absent species that have returned to the Bay Area include Swainson's hawk , white tailed kite , and
7191-410: The 2009 American Community Survey , the Los Angeles Metropolitan Area had a population of 12,874,797, of which 6,402,498 (49.7% of the population) were male and 6,472,299 (50.3% of the population) were female. The age composition is shown in the table at right. Median age: 34.6 years According to the 2020 census, there were 18,644,680 people living in the Greater Los Angeles Area. The racial makeup of
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#17328369305157332-413: The 28 cities of Riverside County by population at the 2020 U.S. census: List of the 24 cities and incorporated towns of San Bernardino County by population at the 2020 U.S. census: While the above areas are included in the regional definition of Greater Los Angeles, the U.S. Census Bureau defines Greater Los Angeles, or officially, the Los Angeles–Long Beach Combined Statistical Area, to include both
7473-440: The Americas . The earliest Spanish exploration of the Bay Area took place in 1769. The Mexican government controlled the area from 1821 until the 1848 Treaty of Guadalupe Hidalgo . Also in 1848, James W. Marshall discovered gold in nearby mountains , resulting in explosive immigration to the area and the precipitous decline of the Native population . The California Gold Rush brought rapid growth to San Francisco . California
7614-413: The Bay Area at the time of first European contact were descended from Siberian tribes who arrived at around 1,000 BCE by sailing over the Arctic Ocean and following the salmon migration. However the current academic consensus is compatible with the oral tradition of the Ohlone and Miwok peoples, which suggests they have been living in the Bay Area for several hundreds if not thousands of years. At
7755-437: The Bay Area became part of the Mexican province of Alta California , a period characterized by ranch life and visiting American trappers. Mexico's control of the territory would be short-lived, however, and in 1846 a party of settlers occupied Sonoma Plaza and proclaimed the independence of the new Republic of California . That same year, the Mexican–American War began, and American captain John Berrien Montgomery sailed
7896-449: The Bay Area has experienced numerous political, cultural, and artistic movements, developing unique local genres in music and art and establishing itself as a hotbed of progressive politics . Economically, the post-war Bay Area saw large growth in the financial and technology industries, creating an economy with a gross domestic product of over $ 700 billion. In 2018 it was home to the third-highest concentration of Fortune 500 companies in
8037-401: The Bay Area involves numerous local and regional jurisdictions, often with broad and overlapping responsibilities. The Coyote Hills Shell Mound, the earliest known archaeological evidence of human habitation of the Bay Area estuaries, dates to around 10,000 BCE, with evidence pointing to even earlier settlement in Point Reyes in Marin County . It has been conjectured that the people living in
8178-507: The Bay Area their home, making the region a popular destination for birdwatching . Many birds are listed as endangered species despite once being common in the region. Western burrowing owls were originally listed as a species of special concern by the California Department of Fish and Game in 1979. California's population declined 60% from the 1980s to the early 1990s, and continues to decline at roughly 8% per year. A 1992–93 survey reported little to no breeding burrowing owls in most of
8319-433: The Bay Area, all naturally spawned anadromous steelhead populations below natural and manmade impassable barriers in California streams from the Russian River to Aptos Creek , and the drainages of San Francisco, San Pablo, and Suisun Bays are listed as threatened under the Federal Endangered Species Act . The Central California Coast coho salmon population is the most endangered of the many troubled salmon populations on
8460-419: The Bay Area, left behind by the movement of the San Andreas Fault, whose movement sliced a subduction plate and allowed magma to briefly flow to the surface. The region has considerable vertical relief in its landscapes that are not in the alluvial plains leading to the bay or in the inland valleys. The topography, and geologic history, of the Bay Area can largely be attributed to the compressive forces between
8601-420: The Bay Area: the Karkin of the Carquinez Strait , the Chochenyo of the East Bay , the Ramaytush of the San Francisco Peninsula , and the Tamien of the South Bay. The Miwok had two major groups in the Bay Area: the Bay Miwok of Contra Costa and the Coast Miwok of Marin and Sonoma . In 1542, Juan Rodríguez Cabrillo explored the Pacific coast near the Bay Area though the expedition did not see
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#17328369305158742-455: The Bay. The wild turkey population was introduced in the 1960s by state game officials, and by 2015 have become a common sight in East Bay communities. The Bay Area is well known for the complexity of its landforms that are the result of the forces of plate tectonics acting over of millions of years, since the region is located in the middle of a meeting point between two plates. Nine out of eleven distinct assemblages have been identified in
8883-422: The California scorpionfish are all significant components of the bay's fisheries . The bay's salt marshes now represent most of California's remaining salt marsh and support a number of endangered species and provide key ecosystem services such as filtering pollutants and sediments from the rivers. Most famously, the bay is a key link in the Pacific Flyway and with millions of shorebirds annually visiting
9024-552: The Central Valley and the Sierra Nevada. In 2014, a Bay Area-wide survey found osprey had extended their breeding range southward with nesting sites as far south as Hunters Point in San Francisco on the west side and Hayward on the east side, while further studies have found nesting sites as far south as the Los Gatos Creek watershed, indicating that the nesting range now includes the entire length of San Francisco Bay. Most nests were built on man-made structures close to areas of human disturbance, likely due to lack of mature trees near
9165-408: The East Bay receives oceanic weather that travels through the Golden Gate strait, and further diffuses that air through the Berkeley Hills , Niles Canyon and the Hayward Pass into the Livermore Valley and Altamont Pass . Here, the resulting breeze is so strong that it is home to one of the world's largest array of wind turbines . Further north, the Carquinez Strait funnels the ocean weather into
9306-457: The Inland Empire is sometimes defined as the entirety of San Bernardino and Riverside Counties, the eastern undeveloped, desert portions of these counties are not considered to be part of Greater Los Angeles. The state of California defines this area to include the cities of Adelanto , Apple Valley , and Victorville to the north, the Riverside–San Diego county line to the south, and the towns of Anza , Idyllwild , and Lucerne Valley , along with
9447-439: The Los Angeles area's expanding population. The development of a regional freeway system facilitated the expansion of suburbs and human migration linking the Inland Empire and rest of Greater Los Angeles. Despite being primarily suburban, the Inland Empire is also home to important warehousing, shipping, logistics and retail industries, centered on the subregion's major cities of Riverside , San Bernardino and Ontario . While
9588-433: The Pacific Plate and the North American plate. The three major ridge structures in the Bay Area, part of the Pacific Coast Range , are all roughly parallel to the major faults . The Santa Cruz Mountains along the San Francisco Peninsula and the Marin Hills in Marin County follow the San Andreas fault , The Berkeley Hills , San Leandro Hills and their southern ridgeline extension through Mission Peak roughly follow
9729-412: The San Francisco Bay Area are not officially delineated, and the unique development patterns influenced by the region's topography , as well as unusual commute patterns caused by the presence of three central cities and employment centers located in various suburban locales, has led to considerable disagreement between local and federal definitions of the area. Because of this, professor of geography at
9870-414: The San Francisco Bay Area, such as the Central Coast counties of Santa Cruz , San Benito , and Monterey , or the Central Valley counties of San Joaquin , Merced , and Stanislaus . The Bay Area is known for its natural beauty, prominent universities, technology companies, and affluence. The Bay Area contains many cities, towns, airports, and associated regional, state, and national parks, connected by
10011-412: The United States after New York City, and is the focal point of the Greater Los Angeles Area. As an international center for finance, entertainment, media, culture, education, tourism, and science, Los Angeles is considered one of the world's most powerful and influential global cities . List of the 88 cities of Los Angeles County and six large CDPs by population at the 2020 U.S. census: Orange County
10152-502: The United States and world. Citrus production was important to the region's development in the earlier part of the 20th century. While the New York metropolitan area is presently the most populous metropolitan area in the United States, it has been predicted in the past that Greater Los Angeles will eventually surpass Greater New York in population. Whether this will happen is yet to be seen, but past predictions on this event have been off
10293-526: The United States. The Bay Area is home to approximately 7.52 million people. The larger federal classification, the combined statistical area of the region which includes 13 counties, is the second-largest in California—after the Greater Los Angeles area—and the fifth-largest in the United States, with over 9 million people. The Bay Area's population is ethnically diverse: roughly three-fifths of
10434-462: The United States. Within the boundaries of the CSA the Census Bureau defines 30 other urban areas as well, two of which ( Riverside – San Bernardino and Oxnard – Ventura ) form the core of their own metropolitan areas separate from the Los Angeles metropolitan statistical area. Urban areas situated primarily outside the Los Angeles metropolitan statistical area but within the CSA are identified with
10575-482: The Whale , a humpback whale who entered San Francisco Bay twice on errant migrations in the late 1980s and early 1990s. Bottlenose dolphins and harbor porpoises have recently returned to the bay, having been absent for many decades. Historically, this was the northern extent of their warm-water species range. In addition to the many species of marine birds that can be seen in the Bay Area, many other species of birds make
10716-583: The above-mentioned areas along with the entirety of San Bernardino and Riverside counties. These areas are sparsely developed and are part of the Mojave and Colorado Deserts . To the north, Interstate 15 crosses desolate desert landscape after passing Barstow, linking Greater Los Angeles with Las Vegas , with Baker being the only significant outpost along the route. To the east, lie the Mojave National Preserve and Joshua Tree National Park along with
10857-732: The actual city boundaries of incorporated Los Angeles but border the city itself include the Santa Clarita Valley , the San Gabriel Valley , South Bay , and the Gateway Cities . Despite the large footprint of the city of Los Angeles, a majority of the land area within Los Angeles County is unincorporated and under the primary jurisdiction of Los Angeles County. Much of this land, however, cannot be easily developed due to planning challenges presented by geographic features such as
10998-536: The area into the following regions: Some of the above areas can be defined as being bounded by natural features such as mountains or the ocean; others are marked by city boundaries, freeways, or other constructed landmarks. For example, Downtown Los Angeles is the area of Los Angeles roughly enclosed by three freeways and one river: the Harbor Freeway (SR 110) to the west, the Santa Ana Freeway ( US 101 ) to
11139-410: The area was 29.4% White (23.0% Non-Hispanic European and 6.4% Non-Hispanic Middle Eastern), 13.8% Asian (Non-Hispanic), 0.2% Pacific Islander (Non-Hispanic), 6.1% African American (Non-Hispanic), 0.2% Native American (Non-Hispanic), 0.5% from other races (Non-Hispanic), and 3.3% from two or more races (Non-Hispanic). 46.3% of the population were Hispanic of any race, a super-majority of which
11280-470: The area's largest city and the 13th-most populous in the United States . Despite its urban character, San Francisco Bay is one of California's most ecologically sensitive habitats, providing important ecosystem services such as filtering the pollutants and sediments from rivers and supporting a number of endangered species . In addition, the Bay Area is known for its stands of coast redwoods , many of which are protected in state and county parks. The region
11421-628: The article predicted the population would be 18.3 million in that year, a number Greater New York already surpassed in 2007 by half a million people. By 2009, the New York metropolitan area had a population of 22.2 million compared to the Greater Los Angeles Area's 18.7 million, about a 3.56 million persons difference. Percentage growth, however, has been higher in Greater Los Angeles over the past few decades than in Greater New York. According to
11562-587: The bay has been significantly altered heavily re-engineered to accommodate the needs of water delivery, shipping, agriculture, and urban development, with side effects including the loss of wetlands and the introduction of contaminants and invasive species . Approximately 85% of those marshes have been lost or destroyed, but about 50 marshes and marsh fragments remain. Huge tracts of the marshes were originally destroyed by farmers for agricultural purposes, then repurposed to serve as salt evaporation ponds to produce salt for food and other purposes. Today, regulations limit
11703-433: The bay into north and south regions. In 1989, the federal Environmental Protection Agency defined the South Bay as the northern part of Santa Clara County and the southeastern part of San Mateo County. The Bay Area is located in the warm-summer Mediterranean climate zone ( Köppen Csb ) that is a characteristic of California's coast, featuring mild to cool winters with occasional rainfall, and warm to hot, dry summers. It
11844-494: The bay shallows as a refuge, is the most important component of the flyway south of Alaska . Many endangered species of birds are also found here: the California least tern , the California clapper rail , the snowy egret , and the black crowned night heron . There is also a significant diversity of salmonids present in the bay. Steelhead populations in California have dramatically declined due to human and natural causes; in
11985-478: The bay, with uptake in the bay's phytoplankton and contamination of its sportfish . Aquatic mammals are also present in the bay. Before 1825, Spanish, French, English, Russians and Americans were drawn to the Bay Area to harvest prodigious quantities of beaver , river otter , marten, fisher, mink, fox, weasel, harbor and fur seals and sea otter . This early fur trade, known as the California Fur Rush ,
12126-439: The broader county of Los Angeles and metro area, areas such as Downtown Long Beach , downtown Pasadena , downtown Glendale , and downtown Burbank , Downtown Santa Ana , Downtown Anaheim , Downtown Riverside , Downtown San Bernardino , downtown Irvine , and downtown Ontario are notable. Employment is not only in the downtown area, but consistently occurs outside the central core. As such, many people commute throughout
12267-532: The capital city moved between three cities in the Bay Area: San Jose (1849–1851), Vallejo (1851–1852), and Benicia (1852–1853) before permanently settling in Sacramento in 1854. As the Gold Rush subsided, wealth generated from the endeavor led to the establishment of Wells Fargo Bank and the Bank of California , and immigrant laborers attracted by the promise of wealth transformed the demographic makeup of
12408-496: The central area of Los Angeles County quite complicated. Many cities are completely surrounded by the city of Los Angeles and are often included in the city's areas despite being independent municipalities. For example, Santa Monica and Beverly Hills (which is almost completely surrounded by Los Angeles) are considered part of the Westside, while Hawthorne and Inglewood are associated with South L.A. Adjacent areas that are outside
12549-457: The cities lining the coast. List of the 34 cities in Orange County by population at the 2020 census: The Inland Empire, consisting of San Bernardino and Riverside Counties, contains fast-growing suburbs of the region, with a large to majority percentage of the working population commuting to either Los Angeles or Orange Counties for work. Originally an important center for citrus production ,
12690-443: The city and suburbs in various directions for their work and daily activities, with a large portion heading to the municipalities that are outside the city of Los Angeles. Unlike most metropolitan areas, regional identity remains a contentious issue in the Greater Los Angeles area, with many residents not acknowledging any association with the region as a whole. For example, while Los Angeles County and Orange County together make up
12831-552: The city of San Francisco, natural and artificial topographical features direct the movement of wind and fog, resulting in startlingly varied climates between city blocks. Along the Golden Gate Strait , oceanic wind and fog from the Pacific Ocean are able to penetrate the mountain barriers inland into the Bay Area. During the summer, rising hot air in California's interior valleys creates a low pressure area that draws winds from
12972-493: The country, has five MSAs which include, wholly or partially, areas within the nine-county definition, and one CSA which includes eight Bay Area counties (excluding Sonoma ), but including neighboring San Benito , Santa Cruz , San Joaquin , Merced , and Stanislaus counties. The Association of Bay Area Health Officers (ABAHO), an organization that has fought local outbreaks of HIV/AIDS in 1980s and with COVID-19 pandemic and Delta cron hybrid variant (2020–22), consists of
13113-614: The county became increasingly urbanized. The northern part of the county, however, remains largely undeveloped and is mostly within the Los Padres National Forest . List of the 10 cities of Ventura County by population at the 2020 U.S. census: At the core of the Los Angeles–Long Beach combined statistical area (CSA) lies the Los Angeles– Long Beach – Anaheim , CA urban area , the second most populous in
13254-479: The course of the 21st century, droughts and wildfires have increased in frequency and the region's water security has become a development issue. The traditional business district and historical downtown of Greater Los Angeles is Downtown Los Angeles . However, most of commercial activity is found outside downtown Los Angeles in the edge cities of Century City , Wilshire Boulevard in Koreatown , Hollywood ,
13395-484: The destruction of tidal marshes, and large portions are currently being rehabilitated to their natural state. Over time, droughts and wildfires have increased in frequency and become less seasonal and more year-round, further straining the region's water security . According to the 2010 United States Census , the population of the nine-county Bay Area was 7.15 million, with 49.6% male and 50.4% female. Of these, approximately 2.3 million (32%) are foreign born. In 2010
13536-592: The early twentieth century, there was a large growth in population on the western edges of the city moving to the San Fernando Valley and out into the Conejo Valley in eastern Ventura County . Many working-class whites migrated to this area during the 1960s and 1970s out of East and Central Los Angeles. As a result, there was a large growth in population into the Conejo Valley and into Ventura County through
13677-494: The east and south such as Laguna Beach , Mission Viejo , Newport Beach , and San Clemente , is more residential, affluent, recently developed, and has a mostly white population. Irvine is an exception, as it is a center of employment and is ethnically diverse. A growing alternative dividing marker between north and south is the El Toro Y interchange. Orange Coast or South Coast area is defined instead as consisting of some or all of
13818-572: The east, with the City of Los Angeles and Los Angeles County at its center, and Orange County to the southeast. The Los Angeles–Anaheim–Riverside combined statistical area (CSA) covers 33,954 square miles (87,940 km ), making it the largest metropolitan region in the United States by land area. The contiguous urban area is 2,281 square miles (5,910 km ), whereas the remainder mostly consists of mountain and desert areas. With an estimated population of over 18.3 million (U.S. Census Bureau, 2023), it
13959-442: The first large American city where, in the 1920s, major clusters of regional employment, shopping, and culture were already being built outside the traditional downtown areas – in edge cities such as Mid-Wilshire , Miracle Mile and Hollywood . This pattern of growth continued ever outward, more so when the freeway system was built starting in the 1950s; thus Greater Los Angeles was the earliest large American metropolitan area with
14100-548: The growth of the technology sector transformed the region's economy, progressive politics continued to guide the region's political environment. By the turn of the millennium, non-Hispanic whites , the largest ethnic group in the United States, were only half of the population in the Bay Area as immigration among minority groups accelerated. During this time, the Bay Area was the center of the LGBT rights movement : in 2004, San Francisco began issuing marriage licenses to same-sex couples ,
14241-565: The hit American pop song San Francisco (Be Sure to Wear Flowers in Your Hair) further enticing like-minded individuals to join the movement in the Bay Area and leading to the Summer of Love . In the proceeding decades, the Bay Area would cement itself as a hotbed of New Left activism, student activism , opposition to the Vietnam War and other anti-war movements , the black power movement , and
14382-510: The interior, causing a cooling effect for cities along the Peninsula and even as far south as San Jose. This weather pattern is also the source for delays at San Francisco International Airport . In Marin county north of the Golden Gate strait, two gaps north of Muir Woods bring cold air across the Marin Headlands , with the cooling effect reaching as far north as Santa Rosa . Further inland,
14523-407: The larger subregions, the East Bay includes a variety of enclaves, including the suburban Tri-Valley area and the highly urban western part of the subregion that runs alongside the bay, including Oakland. The " North Bay " includes Marin , Sonoma , Napa , and Solano counties, and is the geographically largest and least populated subregion. The western counties of Marin and Sonoma are encased by
14664-512: The latter as the Los Angeles–Long Beach–Anaheim metropolitan statistical area (MSA), the fourth largest metropolitan area in the western hemisphere and the second-largest metropolitan area in the United States, by population of 13 million as of the 2020 U.S. census . It has a total area of 4,850 square miles (12,561 km ). Although San Diego–Tijuana borders the Greater Los Angeles area at San Clemente and Temecula , it
14805-482: The latter two into the Pacific Ocean. In the South Bay, the Guadalupe River drains into San Francisco Bay near Alviso . There are also several lakes present in the Bay Area, including man-made lakes like Lake Berryessa and natural albeit heavily modified lakes like Lake Merritt . Prior to the introduction of European agricultural methods, the shores of San Francisco Bay consisted mostly of tidal marshes. Today,
14946-507: The mark. A 1966 article in Time predicted Greater Los Angeles would surpass New York by 1975, and that by 1990, would reach close to the 19 million mark. But the article's flawed definition of Greater Los Angeles included San Diego , which is actually its own metropolitan area . A 1989 article in The New York Times predicted Greater Los Angeles would surpass Greater New York by 2010, but
15087-510: The most ethnically diverse cities in the United States. List of regions of California This is a list of regions of California , organized by location. Greater Los Angeles Greater Los Angeles is the most populous metropolitan area in the U.S. state of California , encompassing five counties in Southern California extending from Ventura County in the west to San Bernardino County and Riverside County in
15228-462: The nation. Residents in these counties often commute to Los Angeles County and Orange County for employment. Los Angeles County, of which the City of Los Angeles is the county seat, is the most populous county in the United States and is home to over a quarter of all California residents. The large size of the city of Los Angeles, as well as its history of annexing smaller towns, has made city boundaries in
15369-550: The north, the Los Angeles River to the east, and the Santa Monica Freeway ( I-10 ) to the south. Meanwhile, the San Fernando Valley ("The Valley") is defined as the basin consisting of the part of Los Angeles and its suburbs that lie north-northwest of downtown and is ringed by mountains. With a population of nearly 4.1 million people at the 2020 census, the City of Los Angeles is the second most populous city in
15510-515: The northeast, the Morongo Basin in the east-central including Yucca Valley and Twentynine Palms , and the Coachella Valley cities in the southeast. This interconnectivity, provided by one of the most extensive freeway systems in the world, as well as economic, social and media ties, has blended boundaries between these regions and the urbanized Los Angeles and Inland Empire areas. List of
15651-452: The population increase between 2000 and 2006. Growth continues not only outside the existing urbanized area but also adjacent to existing development in the central areas. As in virtually all US core cities, there is now vigorous residential development in the downtown area with both new buildings and renovation of former office buildings. The Los Angeles Downtown News keeps a list of ongoing development projects, updated every quarter. Over
15792-579: The population were Hispanic of any race, a super-majority of which was of Mexican origin. 29.4% of the population (5.5 million) was foreign born; most immigrants came from Latin America and Asia. The explosive growth of the region in the 20th century can be attributed to its favorable Mediterranean climate , the availability of land and many booming industries such as oil , automobile and rubber, motion pictures , intermodal , logistics , and aerospace which in turn attracted millions of people from all over
15933-479: The population, about 1.4% South Asian (Indian Subcontinent), and about 12.4% were East or Southeast Asian. The six largest Asian ancestries with respect to all of Greater LA's population were Chinese : ~ 6.1% , Filipino : ~ 3.1%, Vietnamese : ~ 2.0%, Korean ~ 1.9%, Indian ~ 1.1% , and Japanese ~ 0.8%. Other important Asian American groups include Cambodian , Laotian , Hmong , Taiwanese , Pakistani , and Thai Americans. Non-Hispanic blacks make up 6.1% of
16074-592: The population. Approximately 1,143,781 residents are non-Hispanic blacks. Sub-Saharan Africans were 0.7% (137,443) and Non-Hispanic Caribbean Blacks were 0.3% (62,419). Non-Hispanic Native Americans make up 0.2% of the population (46,143). Non-Hispanic Native Hawaiians and other Pacific Islanders make up 0.2% of the population. Approximately 42,591 residents are Native Hawaiian or of other Pacific Islander ancestries. The largest Pacific Islander ancestries were Samoan , Native Hawaiian , and Guamanian or Chamorro , and Tongan Non-Hispanic Multiracial people make up 3.3% of
16215-402: The prices will continue to increase. The Los Angeles area continues to grow, principally on the periphery where new, cheaper, undeveloped areas are being sought. As such, in these areas, populations as well as housing prices exploded, although the housing bubble popped late in the decade of the 2000s. Riverside and San Bernardino Counties, which contain large swaths of desert, attracted most of
16356-671: The public health officers of 9 Bay Area counties, in addition to the Central Coast counties of Santa Cruz , San Benito , and Monterey and the city of Berkeley . Among locals, the nine-county Bay Area is divided into five sub-regions: the East Bay , North Bay , Peninsula , city of San Francisco , and South Bay . The " East Bay " is the densest region of the Bay Area outside of San Francisco and includes cities and towns in Alameda and Contra Costa counties centered around Oakland . As one of
16497-496: The racial makeup of the nine-county Bay Area was 52.5% White (42.4% were non-Hispanic and 10.1% were Hispanic ), 23.3% Asian , 6.7% non-Hispanic Black or African American , 0.7% Native American or Alaska Native , 0.6% Pacific Islander , 5.4% from two or more races and 10.8% from other races. Hispanic or Latino residents of any race formed 23.5% of the population. The Bay Area cities of Vallejo , Suisun City , Oakland , San Leandro , Fairfield , and Richmond are among
16638-510: The region and even riots in Oakland. His name was symbolically tied to the Occupy Oakland protests two years later that sought to fight against social and economic inequality. By August 2023, San Francisco was in such severe decline that Mayor Matt Mahan of San Jose joked that one day the region might be renamed the "San Jose Bay Area", after its largest and most prosperous city. The borders of
16779-401: The region became an important industrial area by the early 20th century. The Inland Empire also became a key transportation center following the completion of Route 66 , and later Interstate 10 . With the post-World War II economic boom leading to rapid development in Los Angeles and Orange Counties, land developers bulldozed acres of agricultural land to build suburbs in order to accommodate
16920-463: The region's high-tech revolution. In 1955, Shockley Semiconductor Laboratory opened for business in Mountain View near Stanford, and although the business venture was a financial failure, it was the first semiconductor company in the Bay Area, and the talent that it attracted to the region eventually led to a high-tech cluster of companies later known as Silicon Valley . In 1989, in the middle of
17061-412: The region's residents are Hispanic/Latino , Asian , African/Black , Indian , or Pacific Islander , all of whom have a significant presence throughout the region. Most of the remaining two-fifths of the population is non-Hispanic White American . The most populous cities of the Bay Area are San Francisco, Oakland , and San Jose , the latter of which had a population of 969,655 in 2023, making San Jose
17202-467: The region's urban eastern boundaries have become increasingly nebulous as suburban sprawl continues to spread out to form a unified whole with Los Angeles, with further development encroaching past the San Bernardino and San Jacinto Mountains and into the outlying desert areas. As a result, the regional definition of Greater Los Angeles can now be extended to include Barstow and surrounding towns in
17343-554: The region. In the early morning of April 18, 1906, a large earthquake with an epicenter near the city of San Francisco hit the region. Immediate casualty estimates by the U.S. Army 's relief operations were 498 deaths in San Francisco, 64 deaths in Santa Rosa , and 102 in or near San Jose, for a total of about 700. More recent studies estimate the total death count to be over 3,000, with over 28,000 buildings destroyed. Rebuilding efforts began immediately. Amadeo Peter Giannini , owner of
17484-584: The region. Between 1950 and 1960, San Francisco welcomed over 100,000 new residents, inland suburbs in the East Bay saw their populations double, Daly City 's population quadrupled, and Santa Clara 's population quintupled. By the early 1960s, the Bay Area and the rest of Northern California became the center of the counterculture movement . Telegraph Avenue in Berkeley and the Haight-Ashbury neighborhood in San Francisco were seen as centers of activity, with
17625-512: The region. Construction of the First transcontinental railroad from the Oakland Long Wharf attracted so many laborers from China that by 1870, eight percent of San Francisco's population was of Asian origin. The completion of the railroad connected the Bay Area with the rest of the United States, established a truly national marketplace for the trade of goods, and accelerated the urbanization of
17766-540: The smaller MSA region, the two host many sub-areas that each have sharp demographic, political, and financial distinctions. South Orange County residents often attempt to be identified apart from Los Angeles although they make up the same metropolitan area. Also, while only 1.63% of Los Angeles residents commute to Orange County for work, over 6% of Orange County commuters head to Los Angeles for work. Western Riverside County and San Bernardino County have become commuter regions characteristic of other suburban counties throughout
17907-623: The sub port of Los Angeles. After World War II, the United Nations was chartered in San Francisco, and in September 1951, the Treaty of San Francisco to re-establish peaceful relations between Japan and the Allied Powers was signed in San Francisco, entering into force a year later. In the years immediately following the war, the Bay Area saw a huge wave of immigration as populations increased across
18048-644: The time of colonization, the Ohlone peoples in the Bay Area primarily lived on the San Francisco Peninsula, in the South Bay and in the East Bay, and the Miwok primarily lived in the North Bay, northern East Bay, and Central Valley. Ohlone villages were spread across the Peninsula, East Bay, South Bay, as well as further south into the Monterey Bay area. There were eight major divisions of Ohlone people, four of which were based in
18189-519: The tip of the San Francisco Peninsula, the city of San Francisco is not considered part of the "Peninsula" subregion, but as a separate entity. The term "South Bay" has different meanings to different groups: Writing in 1959 for the Army Corps of Engineers , the United States Department of Commerce defined the South Bay as comprising five counties, corresponding to their two-way division of
18330-536: The titular city of San Francisco. Its eastern half, which runs alongside the Bay, is highly populated, while its less populated western coast traces the coastline of the Pacific Ocean and is known for its open space and hiking trails. Roughly coinciding with the borders of San Mateo County , it also includes the northwestern Santa Clara County cities of Palo Alto , Mountain View , and Los Altos . Although geographically located on
18471-593: The towns of Needles and Blythe on the California-Arizona border. Ventura County is mostly suburban and rural and also has developed primarily through the growth of Los Angeles. Central and southern Ventura County formerly consisted of small towns along the Pacific Coast until the expansion of U.S. Route 101 drew in commuters from the San Fernando Valley. Master-planned cities soon began developing, and
18612-571: The west coast of the Americas. Soromenho set sail on Manila Galleon San Agustin on July 5, 1595 and in early November they reached land between Point St. George and Trinidad Head , north of the Bay Area, in the Lost Coast . The expedition followed the coast southward and on November 7 the San Agustin anchored in Drakes Bay, and claimed the region as Puerto y Bahía de San Francisco . In late November,
18753-417: The western counties in the Bay Area, leaving only Alameda , Contra Costa , and Solano counties as remnants of a once large breeding range. Bald eagles were once common in the Bay Area, but habitat destruction and thinning of eggs from DDT poisoning reduced the California state population to 35 nesting pairs. Bald eagles disappeared from the Bay Area in 1915, and only began returning in recent years. In
18894-455: The winter season is cool and mild, the summer season is characterized by warm sunny days, while in San Francisco and areas closer to the Golden Gate strait, the summer season is periodically affected by fog. Due to the Bay Area's diverse topographic relief (itself the result of the clashing tectonic plates ), the region is home to numerous microclimates that lead to pronounced differences in climate and temperature over short distances. Within
19035-668: The world with an economy exceeding $ 1 trillion in output, behind New York City and Tokyo . There are three contiguous component urban areas in Greater Los Angeles: the Inland Empire , which can be broadly defined as Riverside and San Bernardino counties; the Ventura/Oxnard metropolitan area (Ventura County); and the Los Angeles metropolitan area (also known as Metropolitan Los Angeles or Metro LA ) consisting of Los Angeles and Orange counties only. The Census Bureau designates
19176-550: Was admitted as the 31st state in 1850. A major earthquake and fire leveled much of San Francisco in 1906. During World War II , the Bay Area played a major role in America's war effort in the Asiatic-Pacific Theater , with the San Francisco Port of Embarkation , of which Fort Mason was one of 14 installations and location of the headquarters, acting as a primary embarkation point for American forces. Since then,
19317-524: Was first reported in Redwood Creek at Muir Beach in 1996, has since been spotted in the North Bay's Corte Madera Creek , the South Bay's Coyote Creek , as well as in 2010 in San Francisco Bay itself at the Richmond Marina . Other mammals include the internationally famous sea lions who began inhabiting San Francisco's Pier 39 after the 1989 Loma Prieta earthquake and the locally famous Humphrey
19458-654: Was more than any other single factor, responsible for opening up the West and the San Francisco Bay Area, in particular, to world trade. By 1817 sea otter in the area were practically eliminated. Since then, the California golden beaver re-established a presence in Alhambra Creek , followed by the Napa River and Sonoma Creek in the north, and the Guadalupe River and Coyote Creek in the south. The North American river otter which
19599-850: Was of Mexican origin. Non-Hispanic whites make up under one-third (29.4%) of the population, approximately 5,477,462 residents. The top European ancestries were German : 7.0% (1,301,202), English : 6.1% (1,131,426), Irish : 5.4% (1,002,233), Italian : 3.4% (624,585), Scandinavian : 2.2% (405,887), French : 1.5% (284,180), Scottish : 1.4% (264,429), Polish : 1.2% (224,443), and Russian : 1.0% (189,115). The top Middle Eastern ancestries were Jewish : 3.2% (600,000), Armenian : 1.2% (214.190), Arab : 0.98% (182,934), and Iranian : 0.75% (139,632). Additionally, 3.3% (611,193) of residents identified as simply American . Values may add to over 100% because people can identify with more than one ethnicity. Approximately 2,577,706 residents are Asian of non-Hispanic origin. Asians of non-Hispanic origin make up 13.8% of
19740-505: Was originally an agricultural area dependent on citrus crops, avocados, and oil extraction, and became a bedroom community for Los Angeles when I–5, the Santa Ana Freeway , linked it to the city in the 1950s. The growth of Los Angeles initially fueled population growth in Orange County, but by the 1970s it had become an important economic center in its own right, with tourism and electronics industries, among others. Today, Orange County
19881-438: Was put aside and mandated never to be developed as part of the master plan of each city. Because of this, the area which was once a relatively inexpensive area to buy real estate, saw rising real estate prices well into the 2000s. Median home prices in the Conejo Valley for instance, ranged from $ 700,000 to $ 2.2 million in 2003. According to Forbes , "it's nearly impossible" to find reasonably priced real estate in California, and
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