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Contra Costa County, California

The location of Contra Costa County in the state of California.
Seal of Contra Costa County
Seal of Contra Costa County

Contra Costa County is a county in the state of California. It is in the United States. As of the 2020 census, the population was 1,165,927.[1] The county seat is Martinez.[2] It is in the eastern part of the San Francisco Bay Area region.

  1. ↑ "QuickFacts: Contra Costa County, California". U.S. Census Bureau. Retrieved May 10, 2023.
  2. ↑ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved 2011-06-07.

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مقاطعة كونترا كوستا (كاليفورنيا) Arabic كونترا كوستا كاونتى (كاليفورنيا) ARZ Kontra-Kosta qraflığı (Kaliforniya) AZ Contra Costa County, Kalifornien BAR Контра Коста Bulgarian কোন্ট্রা কোস্টা কাউন্টি, ক্যালিফোর্নিয়া BPY Comtat de Contra Costa Catalan Контра-Коста (гуо, Калифорни) CE Contra Costa County CEB ناوچەی کۆنترا کۆستا (کالیفۆرنیا) CKB

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