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29-502: The 5.8 magnitude 1980 Livermore earthquake occurred on this fault . The fault creeps at a rate of at 2  mm/year. The predicted probability of a major earthquake on this fault within the next 30 years is relatively low, at 3%, compared to nearby faults such as the Hayward Fault . 37°42′N 121°40′W  /  37.7°N 121.67°W  / 37.7; -121.67 This Contra Costa County, California –related article

58-575: A Council–manager government , with a five-person Town Council and an appointed Town Manager. Council members' terms are four years. Each year, in December, the council selects a new mayor to take office in January. The current mayor of Danville is Karen Stepper. Danville has its own police department, which consists of 42 full-time employees, including 30 Officers and 12 civilian support staff. In addition, it has 8 Reserve officers and 32 volunteers. Allan Shields

87-648: A chimney collapsed. In Danville , a brick chimney and fireplace were damaged, stone wall was destroyed, and walls, patios, sidewalks and ceilings cracked. Several other towns reported slight damage. Danville, California The Town of Danville is located in the San Ramon Valley in Contra Costa County, California , United States. It is one of the incorporated municipalities in California that use "town" in their names instead of "city". The population

116-594: A farming community, the Town of Danville switched from wheat to fruits and nuts after the Southern Pacific Railroad built a spur line through the area in 1891. It developed as a residential suburb in 1947 when the first sizable housing tracts were constructed and its population boomed in the 1970s and 1980s. The Danville Post Office opened in 1860 with hotel owner Henry W. Harris as the first postmaster. Churches, schools, farmers unions and fraternal lodges began as

145-607: A fifth consecutive year, most recently in 2022. Danville is set in a narrow section of the San Ramon Valley with the Las Trampas Ridge to the west and the Diablo Range to the east. The most prominent landmark of Danville is the backdrop of Mount Diablo , which stands to the east at 3,849 feet (1,173 m) and provides a picturesque backdrop for Danville and neighboring towns and cities. Sycamore Creek drains some of

174-470: A political party. Throughout its history until 2008, Danville was a Republican stronghold in presidential elections. Ronald Reagan carried it by a 3-to-1 margin in 1984. However, in 2008, Barack Obama became the first Democrat to carry Danville in a presidential election. He narrowly won it again in 2012 with a plurality. Hillary Clinton carried it in 2016 by nearly 24 points and Joe Biden won it by nearly 29 points in 2020. The Town of Danville has

203-422: A population of 2,120 people in 1940, growing to 4,630 by 1950. Developments such as Montair and Cameo Acres were built, the water and sewer districts extended their boundaries, and the new I-680 freeway which cut through Danville in the mid-1960. In 1982, Danville citizens voted to incorporate their community. In 2000, Danville's population reached 40,484. Danville was ranked as the safest city in California for

232-414: Is a stub . You can help Misplaced Pages by expanding it . This Alameda County, California –related article is a stub . You can help Misplaced Pages by expanding it . This tectonics article is a stub . You can help Misplaced Pages by expanding it . 1980 Livermore earthquake The 1980 Livermore earthquake occurred on January 24 at 11:00 PST in California. The epicenter of the 5.8 M w earthquake

261-532: Is also home to the Eugene O'Neill National Historic Site, Village Theatre and Art Gallery, and the Museum of the San Ramon Valley. Often referred to as the "Heart of the San Ramon Valley", Danville was first populated by Native Americans who lived near creeks and camped on Mount Diablo in the summer. Later, it was part of Mission San José 's grazing land as well as a Mexican land grant called Rancho San Ramon . Initially

290-624: Is the 14th wealthiest ZIP code in America. Danville is one of the wealthiest suburbs of Oakland and San Francisco . Danville also ranks as the 2nd highest-income place in the United States with a population of at least 40,000. It is home to some of the most expensive real estate in the San Francisco Bay Area and the United States. According to CNN Money , Danville's 94506 also has the fourth highest percentage of six-figure income earners in

319-570: Is the main thoroughfare for east–west travel, most importantly to reach the eastern subdivisions far from the interstate. Camino Tassajara also provides access to the wealthy gated community of Blackhawk . According to the United States Census Bureau , the town has a total area of 18.0 square miles (47 km ), all of it land. Danville's weather typifies a Mediterranean climate . Summers are long, with hot days and cool nights. Winters are cool, with mild daytime temperatures usually in

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348-498: The Danville Depot and granted land access to the station. He then subdivided and sold lots east of the station, shifting the town's focus from Front Street to Hartz Avenue. Eventually, a bank, drug store, saloon, doctor's office and Chinese laundry joined the houses lining the street. The Danville Hotel originally sat across from the station and was moved to face Hartz avenue in 1927. The twentieth century found Danville affected by

377-541: The 50s, and nighttime temperatures usually above freezing. Like in the rest of the Bay Area , summers in Danville are extremely dry, and it's not uncommon for four to six months to elapse between the last drop of rain in the spring and the first rain in the fall. Winters are rainy, but periods of several days to a week of mild, dry, sunny weather are quite common even in midwinter. According to Business Insider , Danville's 94506

406-555: The Greenville and Las Positas faults. At least 4.2 km (2.6 mi) of rupture occurred on the Greenville Fault, but it may have extended south to Interstate Highway 580, giving a possible total length of 6.2 km (3.9 mi). Surface faulting was sparse along the rupture. A maximum right-lateral offset of 25 mm (0.98 in) and vertical offset of 50 mm (2.0 in) was recorded. A 0.5 km (0.31 mi) rupture

435-474: The Mount Diablo slopes and flows through Danville. To the north of Danville, the unincorporated town of Alamo sits in the uppermost reaches of the San Ramon Valley and extends into the surrounding hills. San Ramon , another affluent suburb, borders Danville to the south. Interstate 680 , extending along the valley to the north and south, is the main route used by traffic in and out of town. Camino Tassajara

464-604: The a concrete abutment fractured and spalled. Forty four people were injured. Damage at the Lawrence Livermore National Laboratory was estimated at $ 10 million. The January 26 aftershock caused six additional injuries in Livermore from glass and falling debris. Fifty homes sustained minor damage in Tassajara . A fireplace was damaged, walls and concrete fractured, walls detached from ceilings, windows broke and

493-482: The community grew. The Union Academy, a private high school begun by the Cumberland Presbyterian Church, served the county from 1859 to 1868, until it burned down. Danville Presbyterian Church was dedicated in 1875. Many early Danville buildings remain standing today. The original 1874 Grange Hall exists as well, and the original Danville Hotel remains downtown which was last renovated in 2016. Many of

522-448: The early pioneer names appear on the streets and schools, including Baldwin, Harlan, Wood, Love, Hemme, Boone, Bettencourt and Meese. When the Southern Pacific Railroad came to the Valley in 1891, Danville continued to grow. Farmers built warehouses and shipped crops by rail, and residents were able to travel to and from Danville. John Hartz sold 8.65 acres (3.50 ha) of his land for

551-480: The first six says after the mainshock, 59 aftershocks were recorded measuring ≥ 2.5 M L  . On January 26, a M w   5.3 aftershock occurred with an epicenter 14 km (8.7 mi) southeast of the mainshock. Six hundred aftershocks were recorded in the 33 days after the mainshock. An analysis of P wave indicate the fault plane solution was right-lateral strike-slip faulting. Surface faulting consisting of discontinued and small offsets occurred along

580-599: The nation, with 78% of Danville households having at least a six-figure income. The 2010 United States Census reported that Danville had a population of 42,039. The population density was 2,331.9 inhabitants per square mile (900.4/km ). The racial makeup of Danville was 34,942 (83.1%) White , 372 (0.9%) African American , 67 (0.2%) Native American , 4,417 (10.5%) Asian , 68 (0.2%) Pacific Islander , 509 (1.2%) from other races , and 1,664 (4.0%) from two or more races. Hispanic or Latino of any race were 2,879 persons (6.8%). The Census reported that 41,796 people (99.4% of

609-646: The population) lived in households, 56 (0.1%) lived in non-institutionalized group quarters, and 187 (0.4%) were institutionalized. There were 15,420 households, out of which 6,034 (39.1%) had children under the age of 18 living in them, 10,389 (67.4%) were opposite-sex married couples living together, 1,140 (7.4%) had a female householder with no husband present, 449 (2.9%) had a male householder with no wife present. There were 452 (2.9%) unmarried opposite-sex partnerships , and 84 (0.5%) same-sex married couples or partnerships . 2,801 households (18.2%) were made up of individuals, and 1,365 (8.9%) had someone living alone who

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638-467: The wars, the Spanish flu , the depression , and new immigrants. In 1910, a public high school district was organized and San Ramon Valley Union High School was built. A library opened in 1913 with 104 books. St. Isidore's Catholic Church was first established in 1910. An Improvement League funded the first streetlights and paved roads in 1915. Danville continued as farm country into the 1940s. The Valley had

667-421: Was 43,582 at the 2020 census . Since 2018, for five consecutive years, Danville was named "the safest town in California". The Iron Horse Regional Trail runs through Danville. It was first a railroad that has been converted to an 80-foot-wide (24 m) corridor of bike and hike trails as well as controlled intersections. Extending from Livermore to Concord , the trail passes through Danville. Danville

696-415: Was 44.5 years. For every 100 females, there were 93.5 males. For every 100 females age 18 and over, there were 90.3 males. There were 15,934 housing units at an average density of 883.8 units per square mile (341.2 units/km ), of which 15,420 were occupied, of which 13,020 (84.4%) were owner-occupied, and 2,400 (15.6%) were occupied by renters. The homeowner vacancy rate was 0.8%; the rental vacancy rate

725-751: Was 5.3%. 36,137 people (86.0% of the population) lived in owner-occupied housing units and 5,659 people (13.5%) lived in rental housing units. The Danville Library of the Contra Costa County Library is located in Danville. It is one of the busiest libraries in Contra Costa County by circulation. According to the California Secretary of State , as of February 10, 2019, Danville has 30,076 registered voters. Of those, 10,412 (34.6%) are registered Democrats , 10,381 (34.5%) are registered Republicans , and 7,963 (26.5%) have declined to state

754-420: Was 65 years of age or older. The average household size was 2.71. There were 11,978 families (77.7% of all households); the average family size was 3.10. The population was spread out, with 11,196 people (26.6%) under the age of 18, 2,117 people (5.0%) aged 18 to 24, 8,050 people (19.1%) aged 25 to 44, 14,628 people (34.8%) aged 45 to 64, and 6,048 people (14.4%) who were 65 years of age or older. The median age

783-514: Was a hilly area 12 km (7.5 mi) southeast of Mount Diablo and north of Livermore Valley . The earthquake had a maximum Modified Mercalli intensity of VII ( Very strong ). Forty four people were injured and damage across the San Francisco Bay Area totaled $ 11.5 million, with the majority inflicted at the Lawrence Livermore National Laboratory . The mainshock was preceded by a 2.7 M L   foreshock 1.5 minutes prior. In

812-489: Was located 0.12–0.25 km (0.075–0.155 mi) east of the main rupture, and 25 m (82 ft) away from another known fault. The secondary break produced 20 cm (7.9 in) of right-lateral offset, and 40 mm (1.6 in) of extension. Offset was also recorded along at least 1.1 km (0.68 mi) of the Las Positas Fault Zone. These consisted of small left-lateral offsets. Damage to property

841-404: Was nonstructural—consisting of fallen ceiling tiles, detached bricks from chimneys, ruptured gas and water lines, shattered windows, and mobile homes displaced from their foundations. At a ranch north of Livermore, along Vasco Road, two brick-and-stone fireplaces were fractured and offset from their walls. Along Interstate 580 and Greenville Road, a concrete pavement sunk 30 cm (12 in), and

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