Placer County, California
Placer County ( ; Spanish for "sand deposit"), officially the County of Placer, is a county in the U.S. state of California. As of the 2020 census, the population was 404,739. The county seat is Auburn. Placer County is included in the Greater Sacramento metropolitan area. It is in both the Sacramento Valley and Sierra Nevada regions, in what is known as the Gold Country. The county stretches roughly 65 miles from Sacramento's suburbs at Roseville to the Nevada border and the shore of Lake Tahoe. Etymology. The discovery of gold in 1848 brought tens of thousands of  miners from around the world during the California Gold Rush. In addition, many more thousands came to provide goods and services to the miners. On April 25, 1851, the fast-growing county was formed from parts of Sutter and Yuba Counties with Auburn as the county seat. Placer County took its name from the Spanish word for sand or gravel deposits containing gold. Miners washed away the gravel, leaving the heavier gold, in a process known as "placer mining". History. Gold mining was a major industry through the 1880s, but gradually the new residents turned to farming the fertile foothill  soil, harvesting timber and working for the Southern Pacific Railroad. Auburn was settled when Claude Chana discovered gold in Auburn Ravine in May 1848 and later became a shipping and supply center for the surrounding gold camps. The cornerstone of Placer's courthouse, which is clearly visible from Interstate 80 through Auburn, was laid on July 4, 1894. The building was renovated during the late 1980s and continues to serve the public with courtrooms, a sheriff's office and the Placer County Museum. Roseville, once a small agricultural center, became a major railroad center and grew to the county's  most populous city after Southern Pacific Railroad moved its railroad switching yards there in 1908. Loomis and Newcastle began as mining towns, but soon became centers of a booming fruit-growing industry, supporting many local packing houses. Penryn was founded by a Welsh miner, Griffith Griffith, who established a large granite quarry. Rocklin began as a railroad town and became home to a number of granite quarries. Lincoln and Sheridan continue to support ranching and farming. Lincoln also is the home of one of the county's oldest businesses, the Gladding, McBean terra cotta clay manufacturing plant, established in 1875 . The 1960 Winter Olympics were hosted in Squaw Valley, in Placer County. Geography. According to the U.S. Census Bureau, the county has an area of , of which is land and (6.4%) is water. Watercourses in Placer County include the American River and Bunch Creek. 40.96% of Lake Tahoe's surface area is in Placer County, more than in any of the four other counties in which it lies. Demographics. 2020 census. "Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can  be of any race." 2010 Census. The 2010 United States Census reported that Placer County had a population of 348,432. The racial makeup of Placer County was 290,977 (83.5%) White, 4,751 (1.4%) African American, 3,011 (0.9%) Native American, 20,435 (5.9%) Asian, 778 (0.2%) Pacific Islander, 13,375 (3.8%) from other races, and 15,105 (4.3%) from two or more races. There were 4,710 Hispanics or Latinos of any race (12.8%). 2000. As of the census of 2000, there were 248,399 people, 93,382 households, and 67,701 families residing in the county. The population density was 177 people per square mile (68/km). There  were 107,302 housing units at an average density of 76 per square mile (30/km). The racial makeup of the county was 88.6% White, 0.8% Black or African American, 0.9% Native American, 3.0% Asian, 0.2% Pacific Islander, 3.4% from other races, and 3.2% from two or more races. 9.7% of the population were Hispanic or Latino of any race. 15.5% were of German, 12.3% English, 10.6% Irish, 7.1% Italian and 7.0% American ancestry according to Census 2000. 89.7% spoke only English at home; 6.0% spoke Spanish. There were 93,382 households, out of which 35.3% had children under the age of  18 living with them, 59.4% were married couples living together, 9.2% had a female householder with no husband present, and 27.5% were non-families. 21.3% of all households were made up of individuals, and 8.1% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.06. In the county, the population was spread out, with 26.5% under the age of 18, 6.9% from 18 to 24, 29.00% from 25 to 44, 24.5% from 45 to 64, and 13.1% who were 65 years of age or older . The median age was 38 years. For every 100 females, there were 96.4 males. For every 100 females age 18 and over, there were 93.9 males. The median income for a household in the county was $57,535, and the median income for a family was $65,858 (these figures had risen to $68,463 and $80,987 respectively as of a 2007 estimate). Males had a median income of $50,410 versus $33,763 for females. The per capita income for the county was $27,963. About 3.9% of families and 5.8% of the population were below the poverty  line, including 6.3% of those under age 18 and 3.8% of those age 65 or over. Unemployment in the county is just under 7% which is considerably lower than the state's average. Politics, government, and policing. Government. County government is by a five-person four-year term elected board of supervisors with a board-appointed county manager and his/her department administrators. Law enforcement. The Placer County Sheriff's Office provides court protection, jail administration, and coroner services for all of Placer County. It provides patrol, detective, and other police services for the unincorporated areas of the county plus  by contract to the city of Colfax and the town of Loomis. Overview. In its early history Placer County was solidly Republican: it voted Republican in every election between 1860 and 1912, when Bull Moose nominee Theodore Roosevelt was California's official Republican nominee. Between 1916 and 1976, however, the county voted Republican only in three landslide elections of 1920, 1952 and 1972 – in all of which its GOP margins were much smaller than for the state or nation. Since the “Reagan Revolution” Placer County has become and remained a stronghold of the Republican Party; it consistently elects Republican public  officials and has voted for presidential candidates from the party in every election since 1980. In the United States House of Representatives, Placer County is split between California's 1st and 4th congressional districts, represented by and , respectively. In the California State Senate, Placer County is split between the 1st and 4th districts, represented by and , respectively. In the California State Assembly, the county is split between the 1st, 5th, and 6th districts, represented by , , and , respectively. Crime. The following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense. Economy. Top  employers. According to the county's 2010 Comprehensive Annual Financial Report, the top employers in the county are: mPOWER Placer. mPOWER Placer is Placer County's Property Assessed Clean Energy (PACE) program. It provides financing to commercial, industrial, agricultural and multifamily property owners to install energy efficiency, water conservation and renewable energy retrofits. The program, administered by the Placer County Treasurer-Tax Collector’s Office, was approved by the Board of Supervisors on February 9, 2010, and launched on March 22, 2010, and is open to eligible Placer County property owners. Transportation. Airports. There are three general aviation airports in  Placer County: The closest commercial airport is Sacramento International Airport in Sacramento. Communities. Population ranking. The population ranking of the following table is based on the 2020 census of Placer County. † "county seat"