County seat, Martinez. Created February 18, 1850. The name signifies “opposite coast,” because of its situation opposite San Francisco, in an easterly direction, on San Francisco Bay.
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Contra Costa County is home to 19 cities and numerous unincorporated communities. See the County Supervisorial Districts map. For more information about ...
Contra Costa County was one of the original 27 counties of California, created in 1850 at the time of statehood. The county was originally to be called Mt. ...
Contra Costa County offices will be closed on Monday, May 27, in observance of Memorial Day. Emergency services and law enforcement will remain available.
Contra Costa County is home to more than one million residents, and was one of the original 27 counties established in California in 1850.
The County of Contra Costa is home to approximately 1,094,000 residents, and was incorporated in 1850 as one of the original 27 counties of the State of ...
District 1 of Contra Costa County includes several unincorporated communities, or communities that don't fall within the boundaries of cities.
This map shows the incorporated and unincorporated areas in Contra Costa County, California, highlighting Pacheco in red. It was created with a custom script ...
Incorporated Places in Contra Costa (California, USA) with population statistics, charts, map, location, weather and web information.
Apr 13, 2024 · This map shows the incorporated and unincorporated areas in Contra Costa County, California, highlighting Concord in red. It was created with a ...