Demographics

Contra Costa County Voter Registration by Major Political District
Voter registration by political party for the major political districts in Contra Costa County (*).

These statistics do not include registration from other counties which may contain portions of these districts. District wide registration statistics are found on the Secretary of State’s Voter Registration statistics page.

(*)Voter Registration counts will not be updated during the blackout period. The period begins on the14th day prior to a Federal election and runs through the 28th day after the election. June 3, 2014 Election-Blackout Period: May 20, 2014 to July 1, 2014.

Contra Costa County Population by Race and Ethnicity
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Source: U.S. Census Bureau (2011) American Community Survey.

Languages Spoken at Home in Contra Costa County
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Source: U.S. Census Bureau (2011) American Community Survey.

Contra Costa County Population by Age and Sex
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Source: U.S. Census Bureau (2011) American Community Survey.

Disability Status in Contra Costa County
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Source: U.S. Census Bureau (2011) American Community Survey.