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El Dorado County

For the California wine region, see El Dorado AVA.
El Dorado County, California
County of El Dorado

A barn in El Dorado County
Official seal of El Dorado County, California

Location in the state of California
Country  United States of America
State  California
Regions Sierra Nevada, Gold Country
Metropolitan area Greater Sacramento
Incorporated February 18, 1850[1]
County seat Placerville
Largest city South Lake Tahoe
 • Total 1,788.10 sq mi (4,631.2 km2)
 • Land 1,710.85 sq mi (4,431.1 km2)
 • Water 77.25 sq mi (200.1 km2)
Population (2010)
 • Total 181,058
 • Density 100/sq mi (39/km2)
Time zone Pacific Standard Time (UTC-8)
 • Summer (DST) Pacific Daylight Time (UTC-7)

El Dorado County, officially the County of El Dorado, is a county located in the historic Gold Country in the Sierra Nevada Mountains and foothills of the U.S. state of California. The 2010 population was 181,058. The El Dorado county seat is in Placerville.

The population of El Dorado County has grown as the Greater Sacramento has expanded into the region. In the unique Lake Tahoe area of the county, environmental awareness and environmental protection initiatives have grown along with the population since the 1960 Winter Olympics, hosted at Squaw Valley Ski Resort in neighboring Placer County.


Local landmarks:


According to the 2000 census, the county has a total area of 1,788.10 square miles (4,631.2 km2), of which 1,710.85 square miles (4,431.1 km2) (or 95.68%) is land and 77.25 square miles (200.1 km2) (or 4.32%) is water.[2]






  • Town Center, El Dorado Hills [1]
  • El Dorado Hills: Everything El Dorado

Transportation infrastructure

Major highways

Public transportation

  • El Dorado Transit runs local service in Placerville and surrounding areas (as far east as Pollock Pines). Commuter service into Sacramento and Folsom is also provided.
  • Nevada.


General aviation airports are include: Placerville Airport, Georgetown Airport, Cameron Airpark and Lake Tahoe Airport.

Cities and towns

Incorporated Cities

Communities over 10,000 population

Communities under 10,000 population


Voter registration statistics

Cities by population and voter registration


Presidential election results
Year GOP DEM Others
2008 54.1% 50,314 43.6% 40,529 2.2% 2,083
2004 61.2% 52,878 37.3% 32,242 1.4% 1,244
2000 58.3% 42,045 36.4% 26,220 5.4% 3,871
1996 51.8% 32,759 36.3% 22,957 11.8% 7,480
1992 39.9% 25,906 32.4% 21,012 27.7% 17,969
1988 59.3% 30,021 39.1% 19,801 1.5% 781
1984 64.9% 27,583 33.7% 14,312 1.4% 583
1980 58.3% 21,238 29.5% 10,765 12.2% 4,446
1976 47.7% 12,472 48.8% 12,763 3.5% 919
1972 54.2% 11,330 41.4% 8,654 4.4% 921
1968 49.0% 7,468 39.7% 6,054 11.3% 1,719
1964 39.5% 5,775 60.3% 8,810 0.2% 25
1960 49.2% 6,065 50.1% 6,175 0.8% 97
Election results from statewide races
Year Office Results
2010 Governor Whitman 56.2 - 38.6%
Lieutenant Governor Maldonado 55.6 - 32.8%
Secretary of State Dunn 53.5 - 37.4%
Controller Chiang 46.1 - 45.7%
Treasurer Walters 51.3 - 41.0%
Attorney General Cooley 60.4 - 29.4%
Insurance Commissioner Villines 53.6 - 33.8%

El Dorado is a predominantly Republican county in Presidential and congressional elections. The last Democrat to win a majority in the county was Lyndon Johnson in 1964 election, and the last Democrat to win the county was Jimmy Carter in the 1976 presidential election. The county is noted as a center of political concern with the United Nations non-binding sustainable development plan Agenda 21, which was on the County Board of Supervisors meeting Agenda on May 15, 2012. Concerns included the threat of U.S. Forest Service road closures and traffic roundabouts.[6] On February 19, 2013 14 members of the El Dorado County Grand Jury resigned, forcing Supervising Judge Steven Bailey to dissolve it.[7]

El Dorado County is in Template:Representative.[8] In the State Assembly, the county is split between Template:Representative and Template:Representative.[9] In the State Senate, it is in Template:Representative.[10]



Places by population, race, and income


Historical population
Census Pop.
Est. 2012180,561−0.3%
U.S. Decennial Census[17]
2012 Estimate[18]

The 2010 United States Census reported that El Dorado County had a population of 181,058. The racial makeup of El Dorado County was 156,793 (86.6%) White, 1,409 (0.8%) African American, 2,070 (1.1%) Native American, 6,297 (3.5%) Asian, 294 (0.2%) Pacific Islander, 7,278 (4.0%) from other races, and 6,917 (3.8%) from two or more races. Hispanic or Latino of any race were 21,875 persons (12.1%).[19] The largest growth in the county has come in El Dorado Hills where the population grew by 24,092 residents to a total of 42,108 since 2000.[19]


As of the census[20] of 2000, there were 156,299 people, 58,939 households, and 43,025 families residing in the county. The population density was 91 people per square mile (35/km²). There were 71,278 housing units at an average density of 42 per square mile (16/km²). The racial makeup of the county was 89.7% White, 0.5% Black or African American, 1.0% Native American, 2.1% Asian, 0.1% Pacific Islander, 3.6% from other races, and 3.0% from two or more races. 9.3% of the population were Hispanic or Latino of any race. 14.9% were of German, 13.4% English, 10.3% Irish, 6.6% Italian and 6.6% American ancestry according to Census 2000. 90.5% spoke English and 6.5% Spanish as their first language.

There were 58,939 households out of which 34.2% had kids under the age of 18 living with them, 60.1% were married couples living together, 8.9% had a female householder with no husband present, and 27.0% were non-families. 20.1% of all households were made up of individuals and 7.3% 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 3.04.

In the county the population was spread out with 26.1% under the age of 18, 6.8% from 18 to 24, 27.8% from 25 to 44, 26.9% from 45 to 64, and 12.4% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 99.5 males. For every 100 females age 18 and over, there were 97.3 males.

The 2000 census also states that the median income for a household in the county was $51,484, and the median income for a family was $60,250. Males had a median income of $46,373 versus $31,537 for females. The per capita income for the county was $25,560. About 5.0% of families and 7.1% of the population were below the poverty line, including 7.6% of those under age 18 and 5.0% of those age 65 or over.


Portions of El Dorado county are known to contain natural asbestos formations near the surface.[21] The USGS studied amphiboles in rock and soil in the area in response to an EPA sampling study and subsequent criticism of the EPA study. The study found that many amphibole particles in the area meet the counting rule criteria used by the EPA for chemical and morphological limits, but do not meet morphological requirements for commercial-grade-asbestos. The executive summary pointed out that even particles that do not meet requirements for commercial-grade-asbestos may be a health threat and suggested a collaborative research effort to assess health risks associated with "Naturally Occurring Asbestos".[22]

In 2003 after construction of the Oak Ridge High School (El Dorado Hills, CA) soccer field, the federal Agency for Toxic Substances and Disease Registry found that some student athletes, coaches and school workers received substantial exposures. The inside of Oak Ridge High School needed to be cleaned of dust.[21]

See also



External links

  • official El Dorado County Historical Museum website
  • El Dorado Environmental air quality management - Naturally occurring asbestos information
  • El Dorado County Weather
  • El Dorado County Visitors Authority
  • El Dorado Western Railway Foundation blog The railway is restoring the Diamond & Caldor No. 4 Shay locomotive at the El Dorado County Historical Museum

Coordinates: 38°47′N 120°32′W / 38.78°N 120.53°W / 38.78; -120.53

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