Contra Costa County, California
Contra Costa County is a county in the state of California. It is in the United States. As of the 2010 census, the population was 1,049,025. The county seat is Martinez. It is in the northern part of the San Francisco Bay Area region.
References[change | change source]
- ↑ "State & County QuickFacts". United States Census Bureau. Archived from the original on February 22, 2016. Retrieved April 3, 2016.
- ↑ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved 2011-06-07.