102-689: The Metro ExpressLanes project is a transport project in Los Angeles County, California that debuted in 2012 to "improve traffic flow and provide enhanced travel options on I-10 and I-110 in Los Angeles County". It includes a range of infrastructure developments on the Harbor Transitway and the El Monte Busway . The existing high-occupancy lanes on these transitways were converted to high-occupancy toll lanes . Associated works included
204-631: A central lagoon . Important human migrations occurred in the Pacific in prehistoric times. Modern humans first reached the western Pacific in the Paleolithic , at around 60,000 to 70,000 years ago. Originating from a southern coastal human migration out of Africa, they reached East Asia , Mainland Southeast Asia , the Philippines, New Guinea , and then Australia by making the sea crossing of at least 80 kilometres (50 mi) between Sundaland and Sahul . It
306-406: A large cluster of government buildings in the city's Civic Center. Historically, the courthouses were county-owned buildings that were maintained at county expense, which created significant friction since the trial court judges, as officials of the state government, had to lobby the county Board of Supervisors for facility renovations and upgrades. In turn, the state judiciary successfully persuaded
408-674: A major upgrade to the El Monte bus station , expansion of Metrolink 's Pomona–North station , the creation of a new transit station at Union Station , and increased park and ride capacity and bike lockers at many transit stations. In addition, new vanpool vehicles and buses will be purchased. The project was delivered by the Los Angeles County Metropolitan Transportation Authority , the California Department of Transportation , and others. The budget
510-400: A median income of $ 36,299 versus $ 30,981 for females. The per capita income for the county was $ 20,683. There are 14.4% of families living below the poverty line and 17.9% of the population, including 24.2% of under 18 and 10.5% of those over 64. Los Angeles County has the highest number of millionaires of any county in the nation, totaling 261,081 households as of 2007. The homeownership rate
612-510: A single county. As a result, both the county superior court and the federal district court are respectively the busiest courts of their type in the nation. Many celebrities have been seen in Los Angeles courts. In 2003, the television show Extra (based in nearby Glendale ) found itself running so many reports on the legal problems of local celebrities that it spun them off into a separate show, Celebrity Justice . State cases are appealed to
714-550: Is 365,000 workers. Despite a business exodus from Downtown Los Angeles since the COVID-19 pandemic , the city's urban core is evolving as a cultural center with the world's largest showcase of architecture designed by Frank Gehry . The following major companies have headquarters in Los Angeles County: The Los Angeles County Office of Education provides a supporting role for school districts in
816-528: Is 4,280 m (14,040 ft; 2,340 fathoms), putting the total water volume at roughly 710,000,000 km (170,000,000 cu mi). Due to the effects of plate tectonics , the Pacific Ocean is currently shrinking by roughly 2.5 cm (1 in) per year on three sides, roughly averaging 0.52 km (0.20 sq mi) a year. By contrast, the Atlantic Ocean is increasing in size. Along
918-400: Is 47.9%, and the median value for houses is $ 409,300. 42.2% of housing units are in multi-unit structures. Los Angeles County has the largest number of homeless people , with "48,000 people living on the streets, including 6,000 veterans ," in 2010. As of 2017 the number of homeless people in the county increased to nearly 58,000. In 2015, there were over two thousand Christian churches ,
1020-633: Is a state-mandated county transportation commission that also operates bus and rail. In the United States House of Representatives , Los Angeles County is split between 17 congressional districts. In the California State Senate , Los Angeles County is split between 13 legislative districts. In the California State Assembly , Los Angeles County is split between 24 legislative districts. On November 4, 2008, Los Angeles County
1122-520: Is greater than that of 40 individual U.S. states . Comprising 88 incorporated cities and many unincorporated areas within a total area of 4,083 square miles (10,570 km ), it is home to more than a quarter of Californians and is one of the most ethnically diverse U.S. counties. The county's seat , Los Angeles , is the second most populous city in the United States , with 3,822,238 residents estimated in 2022. The county has been world-renowned as
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#17330558940181224-491: Is home to the largest Armenian population outside of Armenia. Los Angeles County contains the largest Iranian population outside of Iran of any other county or county equivalent globally. At the 2000 census, there were 9,519,338 people, 3,133,774 households, and 2,137,233 families in the county. The population density was 2,344 inhabitants per square mile (905/km ). There were 3,270,909 housing units at an average density of 806 units per square mile (311 units/km ). Of
1326-431: Is managed on a day-to-day basis by a chief executive officer and is organized into many departments, each of which is enormous in comparison to equivalent county-level (and even many state-level) departments anywhere else in the United States. Some of the larger or better-known departments include: The Los Angeles County Metropolitan Transportation Authority , despite its name, is not a County department. Technically it
1428-464: Is more arts-centered. Santa Monica's pier is a well known tourist spot, famous for its Ferris wheel and bumper car rides, which were featured in the introductory segment of the television sitcom Three's Company . Further north in Pacific Palisades one finds the beaches used in the television series Baywatch . The fabled Malibu , home of many film and television stars, lies west of it. In
1530-491: Is not known with any certainty what level of maritime technology was used by these groups – the presumption is that they used large bamboo rafts which may have been equipped with some sort of sail. The reduction in favourable winds for a crossing to Sahul after 58,000 B.P. fits with the dating of the settlement of Australia, with no later migrations in the prehistoric period. The seafaring abilities of pre-Austronesian residents of Island South-east Asia are confirmed by
1632-505: Is the U.S. Supreme Court in Washington, D.C. The following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense. Crime in 2013 According to the authors of Wild L.A. , a book about urban biodiversity, "Los Angeles is the birdiest county in the country with over 500 recorded species." L.A.'s amenable climate supports a large number of introduced, tropical and migratory species. Because of
1734-598: Is the largest and deepest of Earth's five oceanic divisions . It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica ) in the south, and is bounded by the continents of Asia and Australia in the west and the Americas in the east. At 165,250,000 square kilometers (63,800,000 square miles) in area (as defined with a southern Antarctic border), this largest division of
1836-619: Is the largest diocese in the United States. In 2014, the county had 3,275 religious organizations, the most out of all US counties. The Government of Los Angeles County is defined and authorized under the California Constitution , California law and the Charter of the County of Los Angeles. Much of the Government of California is in practice the responsibility of local governments such as
1938-620: The Americas , although evidence for this remains inconclusive. The first contact of European navigators with the western edge of the Pacific Ocean was made by the Portuguese expeditions of António de Abreu and Francisco Serrão , via the Lesser Sunda Islands , to the Maluku Islands , in 1512, and with Jorge Álvares 's expedition to southern China in 1513, both ordered by Afonso de Albuquerque from Malacca . The eastern side of
2040-424: The Americas , more than 25,000 islands, large and small, rise above the surface of the Pacific Ocean. Multiple islands were the shells of former active volcanoes that have lain dormant for thousands of years. Close to the equator, without vast areas of blue ocean, are a dot of atolls that have over intervals of time been formed by seamounts as a result of tiny coral islands strung in a ring within surroundings of
2142-510: The Bering Sea in the Arctic to the northern extent of the circumpolar Southern Ocean at 60°S (older definitions extend it to Antarctica 's Ross Sea ), the Pacific reaches its greatest east–west width at about 5°N latitude , where it stretches approximately 19,800 km (12,300 mi) from Indonesia to the coast of Colombia – halfway around the world, and more than five times
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#17330558940182244-687: The La Brea Tar Pits , the Arboretum of Los Angeles , and two horse racetracks and two car racetracks ( Pomona Raceway and Irwindale Speedway ), also the RMS ; Queen Mary located in Long Beach, and the Long Beach Grand Prix , and miles of beaches—from Zuma to Cabrillo. Venice Beach is a popular attraction whose Muscle Beach used to attract throngs of tourists admiring "hardbodies". Today, it
2346-831: The Pacific Ocean and encompasses mountain ranges, valleys, forests, islands, lakes, rivers, and desert. The Los Angeles River , Rio Hondo , Ballona Creek , the San Gabriel River and the Santa Clara River flow in Los Angeles County, while the primary mountain ranges are the Santa Monica Mountains and the San Gabriel Mountains . The western extent of the Mojave Desert begins in the Antelope Valley , in
2448-527: The Pacific War ; however, by the end of that war, Japan was defeated and the U.S. Pacific Fleet was the virtual master of the ocean. The Japanese-ruled Northern Mariana Islands came under the control of the United States. Since the end of World War II, many former colonies in the Pacific have become independent states . The Pacific separates Asia and Australia from the Americas. It may be further subdivided by
2550-708: The Sirena Deep , is also located in the Mariana Trench. The western Pacific has many major marginal seas , including the Philippine Sea , South China Sea , East China Sea , Sea of Japan , Sea of Okhotsk , Bering Sea , Gulf of Alaska , Gulf of California , Mar de Grau , Tasman Sea , and the Coral Sea . In the early 16th century , Spanish explorer Vasco Núñez de Balboa crossed the Isthmus of Panama in 1513 and sighted
2652-693: The Southern Hemisphere . The North Equatorial Current , driven westward along latitude 15°N by the trade winds , turns north near the Philippines to become the warm Japan or Kuroshio Current . Turning eastward at about 45°N , the Kuroshio forks and some water moves northward as the Aleutian Current , while the rest turns southward to rejoin the North Equatorial Current. The Aleutian Current branches as it approaches North America and forms
2754-683: The Southwest Pacific around Oceania . The Pacific Ocean's mean depth is 4,000 meters (13,000 feet). Challenger Deep in the Mariana Trench , located in the northwestern Pacific, is the deepest known point in the world, reaching a depth of 10,928 meters (35,853 feet). The Pacific also contains the deepest point in the Southern Hemisphere , the Horizon Deep in the Tonga Trench , at 10,823 meters (35,509 feet). The third deepest point on Earth,
2856-662: The Strait of Magellan to the Philippines , the explorer indeed found the ocean peaceful; however, the Pacific is not always peaceful. Many tropical storms batter the islands of the Pacific. The lands around the Pacific Rim are full of volcanoes and often affected by earthquakes . Tsunamis , caused by underwater earthquakes, have devastated many islands and in some cases destroyed entire towns. The Martin Waldseemüller map of 1507
2958-711: The Transverse Ranges of southern California, and are contained mostly within the Angeles National Forest . Most of the county's highest peaks are in the San Gabriel Mountains, including Mount San Antonio 10,068 feet (3,069 m) at the Los Angeles– San Bernardino county lines, Mount Baden-Powell 9,399 feet (2,865 m), Mount Burnham 8,997 feet (2,742 m) and Mount Wilson 5,710 feet (1,740 m). Several lower mountains are in
3060-772: The Western Hemisphere . The Southern Pacific Ocean harbors the Southeast Indian Ridge crossing from south of Australia turning into the Pacific-Antarctic Ridge (north of the South Pole ) and merges with another ridge (south of South America) to form the East Pacific Rise which also connects with another ridge (south of North America) which overlooks the Juan de Fuca Ridge . For most of Magellan's voyage from
3162-654: The World Ocean and the hydrosphere covers about 46% of Earth's water surface and about 32% of the planet's total surface area, larger than its entire land area (148,000,000 km (57,000,000 sq mi)). The centers of both the Water Hemisphere and the Western Hemisphere , as well as the oceanic pole of inaccessibility , are in the Pacific Ocean. Ocean circulation (caused by the Coriolis effect ) subdivides it into two largely independent volumes of water that meet at
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3264-566: The crab claw sail ) – it is likely that the progressive development of these technologies were related to the later steps of settlement into Near and Remote Oceania. Starting at around 2200 BCE, Austronesians sailed southwards to settle the Philippines . From, probably, the Bismarck Archipelago they crossed the western Pacific to reach the Marianas Islands by 1500 BCE, as well as Palau and Yap by 1000 BCE. They were
3366-929: The equator , the North Pacific Ocean and the South Pacific Ocean (or more loosely the South Seas ). The Pacific Ocean can also be informally divided by the International Date Line into the East Pacific and the West Pacific , which allows it to be further divided into four quadrants, namely the Northeast Pacific off the coasts of North America , the Southeast Pacific off South America , Northwest Pacific off Far Eastern / Pacific Asia , and
3468-496: The 3,133,774 households 37% had children under the age of 18 living with them, 48% were married couples living together, 15% had a female householder with no husband present, and 32% were non-families. 25% of households were one person and 7% were one person aged 65 or older. The average household size was 2.98 and the average family size was 3.61. The age distribution was 28% under the age of 18, 10% from 18 to 24, 33% from 25 to 44, 19% from 45 to 64, and 10% 65 or older. The median age
3570-855: The Atlantic, the Strait of Magellan was at times patrolled by fleets sent to prevent the entrance of non-Spanish ships. On the western side of the Pacific Ocean the Dutch threatened the Spanish Philippines . The 18th century marked the beginning of major exploration by the Russians in Alaska and the Aleutian Islands , such as the First Kamchatka expedition and the Great Northern Expedition , led by
3672-519: The Atlantic. The andesite line is the most significant regional distinction in the Pacific. A petrologic boundary, it separates the deeper, mafic igneous rock of the Central Pacific Basin from the partially submerged continental areas of felsic igneous rock on its margins. The andesite line follows the western edge of the islands off California and passes south of the Aleutian arc , along
3774-704: The Chilean coast, the South Equatorial Current divides; one branch flows around Cape Horn and the other turns north to form the Peru or Humboldt Current . The climate patterns of the Northern and Southern Hemispheres generally mirror each other. The trade winds in the southern and eastern Pacific are remarkably steady while conditions in the North Pacific are far more varied with, for example, cold winter temperatures on
3876-434: The Court of Appeal for the Second Appellate District, which is also headquartered in the Civic Center , and then to the California Supreme Court , which is headquartered in San Francisco but also hears argument in Los Angeles (again, in the Civic Center). Federal cases are appealed to the Court of Appeals for the Ninth Circuit , which hears them at its branch building in Pasadena . The court of last resort for federal cases
3978-499: The Danish-born Russian navy officer Vitus Bering . Spain also sent expeditions to the Pacific Northwest , reaching Vancouver Island in southern Canada, and Alaska. The French explored and colonized Polynesia , and the British made three voyages with James Cook to the South Pacific and Australia, Hawaii , and the North American Pacific Northwest . In 1768, Pierre-Antoine Véron , a young astronomer accompanying Louis Antoine de Bougainville on his voyage of exploration, established
4080-399: The Government of Los Angeles County. The county's voters elect a governing five-member Los Angeles County Board of Supervisors . The small size of the board means each supervisor represents over 2 million people. The board operates in a legislative, executive, and quasi-judicial capacity. As a legislative authority, it can pass ordinances for the unincorporated areas (ordinances that affect
4182-442: The Greater Los Angeles Area. LAX is operated by Los Angeles World Airports (LAWA), an agency of the City of Los Angeles. Other important commercial airports in Los Angeles County include: The following general aviation airports also are located in Los Angeles County: The U.S. Air Force operates three airports in Los Angeles County: Pacific Ocean Main five oceans division: Further subdivision: The Pacific Ocean
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4284-498: The Moluccas, between 1525 and 1527, Portuguese expeditions encountered the Caroline Islands , the Aru Islands , and Papua New Guinea . In 1542–43 the Portuguese also reached Japan. In 1564, five Spanish ships carrying 379 soldiers crossed the ocean from Mexico led by Miguel López de Legazpi , and colonized the Philippines and Mariana Islands . For the remainder of the 16th century, Spain maintained military and mercantile control, with ships sailing from Mexico and Peru across
4386-429: The Pacific Ocean to the Philippines via Guam , and establishing the Spanish East Indies . The Manila galleons operated for two and a half centuries, linking Manila and Acapulco , in one of the longest trade routes in history. Spanish expeditions also arrived at Tuvalu , the Marquesas , the Cook Islands , the Solomon Islands , Vanuatu , the Marshalls and the Admiralty Islands in the South Pacific. Later, in
4488-399: The Pacific Ocean's irregular western margins lie many seas, the largest of which are the Celebes Sea , Coral Sea , East China Sea (East Sea), Philippine Sea , Sea of Japan , South China Sea (South Sea), Sulu Sea , Tasman Sea , and Yellow Sea (West Sea of Korea). The Indonesian Seaway (including the Strait of Malacca and Torres Strait ) joins the Pacific and the Indian Ocean to
4590-402: The Pacific in recorded history. They were part of a Spanish expedition to the Spice Islands that would eventually result in the first world circumnavigation . Magellan called the ocean Pacífico (or "Pacific" meaning, "peaceful") because, after sailing through the stormy seas off Cape Horn , the expedition found calm waters. The ocean was often called the Sea of Magellan in his honor until
4692-540: The Philippines already in 7000 BCE. Additional earlier migrations into Insular Southeast Asia, associated with Austroasiatic-speakers from Mainland Southeast Asia, are estimated to have taken place already in 15000 BCE. At around 1300 to 1200 BCE, a branch of the Austronesian migrations known as the Lapita culture reached the Bismarck Archipelago , the Solomon Islands , Vanuatu , Fiji , and New Caledonia . From there, they settled Tonga and Samoa by 900 to 800 BCE. Some also back-migrated northwards in 200 BCE to settle
4794-528: The United States. Significant contributions to oceanographic knowledge were made by the voyages of HMS Beagle in the 1830s, with Charles Darwin aboard; HMS Challenger during the 1870s; the USS Tuscarora (1873–76); and the German Gazelle (1874–76). In Oceania, France obtained a leading position as imperial power after making Tahiti and New Caledonia protectorates in 1842 and 1853, respectively. After navy visits to Easter Island in 1875 and 1887, Chilean navy officer Policarpo Toro negotiated
4896-416: The andesite line and include New Guinea, the islands of New Zealand, and the Philippines. Some of these islands are structurally associated with nearby continents. High islands are of volcanic origin, and many contain active volcanoes. Among these are Bougainville , Hawaii, and the Solomon Islands. The coral reefs of the South Pacific are low-lying structures that have built up on basaltic lava flows under
4998-408: The andesite line. Within the closed loop of the andesite line are most of the deep troughs, submerged volcanic mountains, and oceanic volcanic islands that characterize the Pacific basin. Here basaltic lavas gently flow out of rifts to build huge dome-shaped volcanic mountains whose eroded summits form island arcs, chains, and clusters. Outside the andesite line, volcanism is of the explosive type, and
5100-409: The arctic, icing from October to May can present a hazard for shipping while persistent fog occurs from June to December. A climatological low in the Gulf of Alaska keeps the southern coast wet and mild during the winter months. The Westerlies and associated jet stream within the Mid-Latitudes can be particularly strong, especially in the Southern Hemisphere, due to the temperature difference between
5202-400: The area. The county office also operates two magnet schools, the International Polytechnic High School and Los Angeles County High School for the Arts . There are a number of private schools in the county, most notably those operated by the Roman Catholic Archdiocese . The county's public education sector is run by numerous school districts with the Los Angeles Unified School District being
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#17330558940185304-421: The base of a counter-clockwise circulation in the Bering Sea . Its southern arm becomes the chilled slow, south-flowing California Current . The South Equatorial Current , flowing west along the equator, swings southward east of New Guinea , turns east at about 50°S , and joins the main westerly circulation of the South Pacific, which includes the Earth-circling Antarctic Circumpolar Current . As it approaches
5406-411: The coast to the state line of Nevada . As the population increased, sections were split off to organize San Bernardino County in 1853, Kern County in 1866, and Orange County in 1889. Before the 1870s, Los Angeles County was divided into townships (many of which were amalgamations of one or more old ranchos ): As shown by the map below, Los Angeles County is bordered on the north by Kern County , on
5508-437: The county are considered ecologically significant indicators of ecosystem health and may be documented using the iNaturalist app. Los Angeles County is commonly associated with the entertainment and digital media industry; all five major film studios — Paramount Pictures , Sony Pictures , Warner Bros. , Universal Pictures , and Walt Disney Studios —are located within the county. Numerous other major industries also define
5610-532: The county is 48.7% White, 11.0% African American, 0.8% Native American, 10.0% Asian, 0.3% Pacific Islander, 23.5% from other races, and 4.9% from two or more races. 44.6% of the population are Hispanic or Latino of any race. The largest European-American ancestry groups are German (6%), Irish (5%), English (4%) and Italian (3%). 45.9% of the population reported speaking only English at home; 37.9% spoke Spanish, 2.22% Tagalog , 2.0% Chinese, 1.9% Korean , 1.87% Armenian , 0.5% Arabic , and 0.2% Hindi . The county has
5712-409: The county's wide range of biomes it is possible to see desert bighorn sheep and green sea turtles in the same day, without crossing the county line. The range of habitats in the county is "greater than in many states, with mountains, wetlands, desert, ocean, meadows and chaparral, each with its own endemic species." There are at least 100 species of trees, and 1000 species of non-native plants, in
5814-408: The diameter of the Moon. Its geographic center is in eastern Kiribati south of Kiritimati , just west from Starbuck Island at 4°58′S 158°45′W / 4.97°S 158.75°W / -4.97; -158.75 . The lowest known point on Earth – the Mariana Trench – lies 10,911 m (35,797 ft ; 5,966 fathoms ) below sea level. Its average depth
5916-402: The difference between temperatures aloft and sea surface temperatures is the greatest; however, each particular basin has its own seasonal patterns. On a worldwide scale, May is the least active month, while September is the most active month. November is the only month in which all the tropical cyclone basins are active. The Pacific hosts the two most active tropical cyclone basins , which are
6018-415: The domicile of the U.S. motion picture industry since the latter's inception in the early 20th century. Los Angeles County is one of the original counties of California , created at the time of statehood in 1850. The county originally included parts of what are now Kern , San Bernardino , Riverside , Inyo , Tulare , Ventura , and Orange counties. In 1851 and 1852, Los Angeles County stretched from
6120-434: The east and the islands of Kiribati in the southeast. Melanesia, to the southwest, includes New Guinea , the world's second largest island after Greenland and by far the largest of the Pacific islands. The other main Melanesian groups from north to south are the Bismarck Archipelago , the Solomon Islands , Santa Cruz , Vanuatu , Fiji and New Caledonia . The largest area, Polynesia , stretching from Hawaii in
6222-429: The east by San Bernardino County , on the southeast by Orange County , on the south by the Pacific Ocean , and on the west by Ventura County . According to the U.S. Census Bureau , the county has an area of 4,751 square miles (12,310 km ), of which 4,058 square miles (10,510 km ) (85%) is land and 693 square miles (1,790 km ) (15%) is water. Los Angeles County borders 70 miles (110 km) of coast on
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#17330558940186324-423: The east coast of Russia contrasting with the milder weather off British Columbia during the winter months due to the preferred flow of ocean currents . In the tropical and subtropical Pacific, the El Niño Southern Oscillation (ENSO) affects weather conditions. To determine the phase of ENSO, the most recent three-month sea surface temperature average for the area approximately 3,000 km (1,900 mi) to
6426-411: The eastern Antelope Valley – California State Parks' largest in area within the county. The California Poppy Reserve is located in the western Antelope Valley and shows off the State's flower in great quantity on its rolling hills every spring. Los Angeles International Airport (LAX), located in the Westchester district, is the primary commercial airport for commercial airlines in the county and
6528-403: The eastern edge of the Kamchatka Peninsula , the Kuril Islands , Japan, the Mariana Islands , the Solomon Islands , and New Zealand's North Island . The dissimilarity continues northeastward along the western edge of the Andes Cordillera along South America to Mexico, returning then to the islands off California. Indonesia, the Philippines, Japan, New Guinea, and New Zealand lie outside
6630-430: The economy of Los Angeles County, including international trade supported by the Port of Los Angeles and the Port of Long Beach , music recording and production, aerospace and defense, fashion, and professional services such as law, medicine, engineering and design services, financial services. High-tech sector employment within Los Angeles County is 368,500 workers, and manufacturing employment within Los Angeles County
6732-410: The eighteenth century. Magellan stopped at one uninhabited Pacific island before stopping at Guam in March 1521. Although Magellan himself died in the Philippines in 1521, Spanish navigator Juan Sebastián Elcano led the remains of the expedition back to Spain across the Indian Ocean and round the Cape of Good Hope , completing the first world circumnavigation in 1522. Sailing around and east of
6834-487: The equator into northern (North Pacific) and southern (South Pacific) portions. It extends from the Antarctic region in the South to the Arctic in the north. The Pacific Ocean encompasses approximately one-third of the Earth's surface, having an area of 165,200,000 km (63,800,000 sq mi) – larger than Earth's entire landmass combined, 150,000,000 km (58,000,000 sq mi). Extending approximately 15,500 km (9,600 mi) from
6936-469: The equator, which can have a salinity as low as 34 parts per thousand, is less salty than that found in the mid-latitudes because of abundant equatorial precipitation throughout the year. The lowest counts of less than 32 parts per thousand are found in the far north as less evaporation of seawater takes place in these frigid areas. The motion of Pacific waters is generally clockwise in the Northern Hemisphere (the North Pacific gyre ) and counter-clockwise in
7038-420: The first completely documented European landing in Australia (1606), in Cape York Peninsula , and Abel Janszoon Tasman circumnavigated and landed on parts of the Australian continental coast and arrived at Tasmania and New Zealand in 1642. In the 16th and 17th centuries, Spain considered the Pacific Ocean a mare clausum – a sea closed to other naval powers. As the only known entrance from
7140-420: The first humans to reach Remote Oceania , and the first to cross vast distances of open water. They also continued spreading southwards and settling the rest of Maritime Southeast Asia , reaching Indonesia and Malaysia by 1500 BCE, and further west to Madagascar and the Comoros in the Indian Ocean by around 500 CE. More recently, it is suggested that Austronesians expanded already earlier, arriving in
7242-423: The great "Southern Sea" which he named Mar del Sur (in Spanish). Afterwards, the ocean's current name was coined by Portuguese explorer Ferdinand Magellan during the Spanish circumnavigation of the world in 1521, as he encountered favorable winds on reaching the ocean. He called it Mar Pacífico , which in Portuguese means 'peaceful sea'. Top large seas: Across the continents of Asia, Australia and
7344-439: The incorporation of the island into Chile with native Rapanui in 1888. By occupying Easter Island, Chile joined the imperial nations. By 1900 nearly all Pacific islands were in control of Britain, France, United States, Germany, Japan, and Chile. Although the United States gained control of Guam and the Philippines from Spain in 1898, Japan controlled most of the western Pacific by 1914 and occupied many other islands during
7446-590: The islands in the world. There are about 25,000 islands in the Pacific Ocean. The islands entirely within the Pacific Ocean can be divided into three main groups known as Micronesia , Melanesia and Polynesia . Micronesia, which lies north of the equator and west of the International Date Line , includes the Mariana Islands in the northwest, the Caroline Islands in the center, the Marshall Islands to
7548-730: The islands of eastern Micronesia (including the Carolines , the Marshall Islands , and Kiribati ), mixing with earlier Austronesian migrations in the region. This remained the furthest extent of the Austronesian expansion into Polynesia until around 700 CE when there was another surge of island exploration. They reached the Cook Islands , Tahiti , and the Marquesas by 700 CE; Hawaiʻi by 900 CE; Rapa Nui by 1000 CE; and finally New Zealand by 1200 CE. Austronesians may have also reached as far as
7650-545: The largest Native American population of any county in the nation: according to the 2000 census, it has more than 153,550 people of indigenous descent, and most are from Latin America . As estimated by the Public Policy Institute of California in 2008, Los Angeles County is home to more than one-third of California's undocumented immigrants , who make up more than ten percent of the population. Los Angeles County
7752-724: The largest one running public schools primarily within the city of Los Angeles and its immediately neighboring cities. The county's most visited park is Griffith Park , owned by the city of Los Angeles. The county is also known for the annual Rose Parade in Pasadena, the annual Los Angeles County Fair in Pomona, the Los Angeles County Museum of Art , the Los Angeles Zoo , the Natural History Museum of Los Angeles County ,
7854-606: The last census of 583,364 people (i.e., 1,152,564 births minus 569,200 deaths) and a decrease due to net migration of 361,895 people. Immigration resulted in a net increase of 293,433 people, and migration from within the United States resulted in a net decrease of 655,328 people. The racial makeup of Los Angeles County was 4,936,599 (50%) White, 1,346,865 (13.7%) Asian, 856,874 (9%) African American, 72,828 (0.7%) Native American, 26,094 (0.3%) Pacific Islander, 2,140,632 (21.8%) from other races, and 438,713 (4.5%) from two or more races. Non-Hispanic whites numbered 2,728,321, or 28% of
7956-434: The majority of which are Catholic. Roman Catholic adherents number close to 40% of the population. There were 202 Jewish synagogues , 145 Buddhist temples, 38 Muslim mosques , 44 Baháʼí Faith worship centers, 37 Hindu temples , 28 Tenrikyo churches and fellowships, 16 Shinto worship centers, and 14 Sikh gurdwaras in the county. The Roman Catholic Archdiocese of Los Angeles has approximately 5 million members and
8058-508: The mountain, canyon, and desert areas one may find Vasquez Rocks Natural Area Park , where many old Westerns were filmed. Mount Wilson Observatory in the San Gabriel Mountains is open for the public to view astronomical stars from its telescope, now computer-assisted. Many county residents find relaxation in water skiing and swimming at Castaic Lake Recreation Area – the county's largest park by area – as well as enjoying natural surroundings and starry nights at Saddleback Butte State Park in
8160-585: The north to New Zealand in the south, also encompasses Tuvalu , Tokelau , Samoa , Tonga and the Kermadec Islands to the west, the Cook Islands , Society Islands and Austral Islands in the center, and the Marquesas Islands , Tuamotu , Mangareva Islands , and Easter Island to the east. Islands in the Pacific Ocean are of four basic types: continental islands, high islands, coral reefs and uplifted coral platforms. Continental islands lie outside
8262-559: The northeastern part of the county. Most of the population of Los Angeles County resides in the south and southwest, with major population centers in the Los Angeles Basin , San Fernando Valley , and San Gabriel Valley . Other population centers are found in the Santa Clarita Valley , Pomona Valley , Crescenta Valley and Antelope Valley . The county is divided west-to-east by the San Gabriel Mountains , which are part of
8364-603: The northern Philippines , but also earlier groups associated with Austroasiatic-speakers , resulting in the modern peoples of Island Southeast Asia and Oceania. A later seaborne migration is the Neolithic Austronesian expansion of the Austronesian peoples . Austronesians originated from the island of Taiwan c. 3000 –1500 BCE. They are associated with distinctive maritime sailing technologies (notably outrigger boats , catamarans , lashed-lug boats, and
8466-643: The northern, western, and southwestern parts of the county, including the San Emigdio Mountains , the southernmost part of Tehachapi Mountains and the Sierra Pelona Mountains . Los Angeles County includes San Clemente Island and Santa Catalina Island , which are part of the Channel Islands archipelago off the Pacific Coast . The Northern part of the county has a Desert climate , while
8568-557: The northwestern Pacific and the eastern Pacific. Pacific hurricanes form south of Mexico, sometimes striking the western Mexican coast and occasionally the Southwestern United States between June and October, while typhoons forming in the northwestern Pacific moving into southeast and east Asia from May to December. Tropical cyclones also form in the South Pacific basin , where they occasionally impact island nations. In
8670-447: The ocean was encountered by Spanish explorer Vasco Núñez de Balboa in 1513 after his expedition crossed the Isthmus of Panama and reached a new ocean. He named it Mar del Sur ("Sea of the South" or "South Sea" ) because the ocean was to the south of the coast of the isthmus where he first observed the Pacific. In 1520, navigator Ferdinand Magellan and his crew were the first to cross
8772-549: The ocean's surface. One of the most dramatic is the Great Barrier Reef off northeastern Australia with chains of reef patches. A second island type formed of coral is the uplifted coral platform, which is usually slightly larger than the low coral islands. Examples include Banaba (formerly Ocean Island) and Makatea in the Tuamotu group of French Polynesia . The volume of the Pacific Ocean, representing about 50.1 percent of
8874-617: The population. Hispanic or Latino residents of any race numbered 4,687,889 (48%); 36% of Los Angeles County's population was of Mexican ancestry, 3.7% Salvadoran, and 2.2% Guatemalan heritage. The county has a large population of Asian Americans , being home to the largest numbers of Burmese , Cambodian , Chinese , Filipino , Indonesian , Korean , Sri Lankan , Taiwanese , and Thai outside their respective countries. The largest Asian groups in Los Angeles County are 4.0% Chinese, 3.3% Filipino, 2.2% Korean, 1.0% Japanese, 0.9% Vietnamese, 0.8% Indian, and 0.3% Cambodian. The racial makeup of
8976-569: The quest for Terra Australis ("the [great] Southern Land"), Spanish explorations in the 17th century, such as the expedition led by the Portuguese navigator Pedro Fernandes de Queirós , arrived at the Pitcairn and Vanuatu archipelagos, and sailed the Torres Strait between Australia and New Guinea, named after navigator Luís Vaz de Torres . Dutch explorers, sailing around southern Africa, also engaged in exploration and trade; Willem Janszoon , made
9078-420: The rest of the county generally is a mix of Semi-arid and a hot-summer Mediterranean climate . There is rainfall mostly in the wintertime, but the mountains in the north-central part of the county have snow during winter. In 2019, the median household income in the county was $ 72,797. Los Angeles County had a population of 9,818,605 in the 2010 United States Census . This includes a natural increase since
9180-500: The settlement of Buka by 32,000 B.P. and Manus by 25,000 B.P. Journeys of 180 kilometres (110 mi) and 230 kilometres (140 mi) are involved, respectively. The descendants of these migrations today are the Negritos , Melanesians , and Indigenous Australians . Their populations in maritime Southeast Asia , coastal New Guinea , and Island Melanesia later intermarried with the incoming Austronesian settlers from Taiwan and
9282-500: The southeast of Hawaii is computed, and if the region is more than 0.5 °C (0.9 °F) above or below normal for that period, then an El Niño or La Niña is considered in progress. In the tropical western Pacific, the monsoon and the related wet season during the summer months contrast with dry winds in the winter which blow over the ocean from the Asian landmass. Worldwide, tropical cyclone activity peaks in late summer, when
9384-423: The state Legislature to authorize the transfer of all courthouses to the state government in 2008 and 2009 (so that judges would have direct control over their own courthouses). Courthouse security is still provided by the county government under a contract with the state. Unlike the largest city in the United States, New York City , all of the city of Los Angeles and most of its important suburbs are located within
9486-786: The tropics and Antarctica, which records the coldest temperature readings on the planet. In the Southern hemisphere, because of the stormy and cloudy conditions associated with extratropical cyclones riding the jet stream, it is usual to refer to the Westerlies as the Roaring Forties, Furious Fifties and Shrieking Sixties according to the varying degrees of latitude. The ocean was first mapped by Abraham Ortelius ; he called it Maris Pacifici following Ferdinand Magellan 's description of it as "a pacific sea" during his circumnavigation from 1519 to 1522. To Magellan, it seemed much more calm (pacific) than
9588-1022: The urban areas of the county. Charismatic biodiversity indicator species native to the area include three species of amphibian ( Baja California chorus frog , black-bellied slender salamander , western toad ), 14 species of bird ( acorn woodpecker , California quail , canyon wren , cinnamon teal , great blue heron , great horned owl , greater roadrunner , hooded merganser , Northern harrier , red-tailed hawk , red-winged blackbird , spotted towhee , western bluebird , western meadowlark ), nine kinds of invertebrates ( Behr's metalmark , bramble green hairstreak , bumblebees , El Segundo blue butterfly , harvester ants , Lorquin's admiral , North American Jerusalem crickets , Sara orangetip , velvet ants ), five mammals ( bobcat , dusky footed woodrat , gray fox , mountain lion , mule deer ), and six reptiles ( California kingsnake , coachwhip snake , gopher snake , side-blotched lizard , western pond turtle , western rattlesnake ). Any observations of these species within
9690-566: The west, and Drake Passage and the Strait of Magellan link the Pacific with the Atlantic Ocean on the east. To the north, the Bering Strait connects the Pacific with the Arctic Ocean . As the Pacific straddles the 180th meridian , the West Pacific (or western Pacific , near Asia) is in the Eastern Hemisphere , while the East Pacific (or eastern Pacific , near the Americas) is in
9792-506: The whole county, like posting of restaurant ratings, must be ratified by the individual city). As an executive body, it can tell the county departments what to do, and how to do it. As a quasi-judicial body, the Board is the final venue of appeal in the local planning process, and holds public hearings on various agenda items. As of 2020, the Board of Supervisors oversees a $ 35.5 billion annual budget and over 112,000 employees. The county government
9894-581: The width of the Pacific with precision for the first time in history. One of the earliest voyages of scientific exploration was organized by Spain in the Malaspina Expedition of 1789–1794. It sailed vast areas of the Pacific, from Cape Horn to Alaska, Guam and the Philippines, New Zealand, Australia, and the South Pacific. Growing imperialism during the 19th century resulted in the occupation of much of Oceania by European powers, and later Japan and
9996-434: The world's oceanic water, has been estimated at some 714 million cubic kilometers (171 million cubic miles). Surface water temperatures in the Pacific can vary from −1.4 °C (29.5 °F), the freezing point of seawater, in the poleward areas to about 30 °C (86 °F) near the equator. Salinity also varies latitudinally, reaching a maximum of 37 parts per thousand in the southeastern area. The water near
10098-667: Was $ 290 million and construction, which began in 2011, was completed in February 2013. Some transit improvements for the Metro J Line are still being worked on. The Metro ExpressLanes project includes: Los Angeles County, California Los Angeles County , officially the County of Los Angeles and sometimes abbreviated as L.A. County , is the most populous county in the United States , with 9,861,224 residents estimated in 2022. Its population
10200-463: Was 32 years. For every 100 females, there were 97.7 males. For every 100 females age 18 and over, there were 95.0 males. The median personal earnings for all workers 16 and older in Los Angeles County are $ 30,654, slightly below the US median; earnings, however vary widely by neighborhood, race and ethnicity, and gender. The median household income was $ 42,189 and the median family income was $ 46,452. Males had
10302-550: Was almost evenly split over Proposition 8 , which amended the California Constitution to ban same-sex marriages. The county voted for the amendment 50.04% with a margin of 2,385 votes. The Los Angeles County Superior Court is the county's court of general jurisdiction, while the U.S. District Court for the Central District of California may hear cases where federal jurisdiction is present. Both are headquartered in
10404-572: Was the first to show the Americas separating two distinct oceans. Later, the Diogo Ribeiro map of 1529 was the first to show the Pacific at about its proper size. (Inhabited dependent territories are denoted by the asterisk (*), with names of the corresponding sovereign states in round brackets. Associated states in the Realm of New Zealand are denoted by the hash sign (#).) Territories with no permanent civilian population. The Pacific Ocean has most of
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