Contra Costa County, California Citizen Voting-age Population By Race and Ethnicity in 2011 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2011, the citizen voting-age population for Contra Costa County, CA was 670.16K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (395.90K) and constituted 59.08% of the total.

The Hispanic or Latino of All Races ethnicity group had the second highest citizen voting-age population (100.19K) and constituted 14.95% of the total. The Non-Hispanic Asian Alone ethnicity group had the third highest (86.92K), constituting 12.97% of the total citizen voting-age population.

The charts and tables below shows the citizen voting-age population and percentages by race and ethnicity.

You can also see similar information for other California counties, and for California.

Data Source: US Census - ACS 5-Years (CVAP).

See this for other years:

Contra Costa County, California Citizen Voting-age Population By Race and Ethnicity in 2011

Non-Hispanic White Alone

Hispanic or Latino of All Races

Non-Hispanic Asian Alone

Non-Hispanic Black Alone

Non-Hispanic Two Or More Races

Non-Hispanic Native Hawaiian & Pac. Islander Alone

Non-Hispanic American Indian & Alaska Native Alone

Contra Costa County, California Citizen Voting-age Population By Race and Ethnicity in 2011

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Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	395895	59.08
Hispanic or Latino of All Races	100190	14.95
Non-Hispanic Asian Alone	86915	12.97
Non-Hispanic Black or African American Alone	65805	9.82
Non-Hispanic Two Or More Races	16405	2.45
Non-Hispanic Native Hawaiian And Pacific Islander Alone	2935	0.44
Non-Hispanic American Indian and Alaska Native Alone	2015	0.30