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Contra Costa County, CA
651 Pine St Fl 11
Martinez, CA 94553-1229
Phone: (925)646-4080
Fax: (925)646-4135

NACo Member

County Populations
  1980     1990     2000     2005  
 650,748  803,732  948,816  1,017,787

County Seat: Martinez
Year Organized: 1850
Square Miles: 720
Size of Board: 5
MSA: San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area
  • Places in Contra Costa County
  • Census Bureau Quick Facts
  • FEDSTATS
  • Elected County Officials
    Name Position
    Susan Bonilla Supervisor, Chair, District 4
    John Gioia Supervisor, District 1
    Federal Glover Supervisor, District 5
    Mary Nejedly Piepho Supervisor, District 3
    Gayle Uilkema Supervisor, District 2
    Robert Kochly District Attorney
    Warren Rupf Sheriff-Coroner
    William Pollacek Treasurer/Tax Collector
    Steve Ybarra Auditor-Controller
    Gus Kramer Assessor
    Stephen Weir County Clerk-Recorder

    Please contact the county to get the most accurate listing.
    To report any updates, deletions or additions, contact Database Updates or send a fax to NACo, Attn: Database Updates (202)393-2630.

    Mailing list information on county officials is made available for sale by NACo. To find out more, click on the link below.

  • NACo's List Sales Information and Order Form

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