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Contra Costa County, CA

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CA

Contra Costa County Map

The County of Contra Costa is located in the State of California. Find directions to Contra Costa County, browse local businesses, landmarks, get current traffic estimates, road conditions, and more. According to the 2020 US Census the Contra Costa County population is estimated at 1,152,333 people. The Contra Costa County time zone is Pacific Daylight Time which is 8 hours behind Coordinated Universal Time (UTC).

Nearby counties include Alameda County, Marin County, Sacramento County, San Francisco County, San Joaquin County, Solano County, Sonoma County.

Top cities include Concord, Richmond, Antioch, San Ramon, Walnut Creek

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United States›California›Contra Costa County, CA

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