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Cities and Towns in the United States > State California > Contra Costa County
Contra Costa County, located in the San Francisco Bay Area of California, is known for its picturesque landscapes and diverse cultural attractions. Home to the Mount Diablo State Park, outdoor enthusiasts enjoy hiking and biking along the many scenic trails. Additionally, the county offers a rich history with attractions such as the John Muir National Historic Site, commemorating the influential environmentalist. Art and history enthusiasts can visit the Richmond Art Center and the Blackhawk Museum, which showcase a range of artistic and historical exhibits. With its blend of natural beauty and cultural offerings, Contra Costa County provides an enriching experience for residents and visitors alike.

Get the contact information for all cities and towns in this county. Find general information, official websites, email, phone numbers, addresses, and much more.

Contra Costa County administration contact details

Contra Costa County administration contact details651 Pine Street, Martinez, CA 94553
County seatMartinez
Phone number(925) 655-2300
Official websitehttps://www.contracosta.ca.gov/
County clerkDebi Cooper
County auditorBob Campbell
County fiscal officerBob Campbell
County permits office or building department contact details(925) 674-7200

Contra Costa County, CA Sheriff's Office and Jail Information

Number of prisons3
Jail namesMartinez Detention Facility, West County Detention Facility, Marsh Creek Detention Facility
Sheriff office address651 Pine Street, Martinez, CA 94553
Sheriff office phone number925-335-1500
Inmate search informationTo locate an inmate in Contra Costa County, use the Sheriff's Office online resources or call the detention facilities directly for assistance with inmate information.

Contra Costa County (CA) Statistics

Number of cities/towns/villages19
Population1147439 people
Area802 sq mi
Density1431 /sq mi
Altitude56 ft
GDP$95 billion
Median Household Income$100484
Poverty rate7%
Unemployment rate3%
Educational Attainment (Bachelor's Degree or higher)41%
Crime rate2627 crimes per 100000 people

Environmental risk in Contra Costa County, CA

Overall riskVery High
Expected Annual LossVery High
Social VulnerabilityRelatively Moderate
Community ResilienceRelatively High
Avalanche RiskNot Applicable
Coastal Flooding RiskRelatively Low
Cold Wave RiskNo Rating
Drought RiskRelatively High
Earthquake RiskVery High

Data obtained from the FEMA National Risk Index.

counties surrounding Contra Costa

Alameda 18.9 milesSolano 23.7 milesSan Joaquin 37.1 miles
San Mateo 40.3 milesSan Francisco 42.1 milesMarin 44.4 miles

List of cities and towns in Contra Costa County by population size

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