Government

Contra Costa County Employment and Human Services

Martinez, CA

  • About Us

    Contra Costa County is home to more than one million residents, and was one of the original 27 counties established in California in 1850. Comprised of 19 cities and many established communities in the unincorporated area, it is the ninth most populous county in the state.

    Contra Costa County is home to more than one million residents, and was one of the original 27 counties established in California in 1850. Comprised of 19 cities and many established communities in the unincorporated area, it is the ninth most populous county in the state.

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