Contra Costa County, California Citizen Voting-age Population By Race and Ethnicity in 2015 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2015, the citizen voting-age population for Contra Costa County, CA was 720.88K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (402.83K) and constituted 55.88% of the total.

The Hispanic or Latino of All Races ethnicity group had the second highest citizen voting-age population (118.70K) and constituted 16.47% of the total. The Non-Hispanic Asian Alone ethnicity group had the third highest (99.81K), constituting 13.85% 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 2015

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 2015

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Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	402825	55.88
Hispanic or Latino of All Races	118695	16.47
Non-Hispanic Asian Alone	99805	13.85
Non-Hispanic Black or African American Alone	69730	9.67
Non-Hispanic Two Or More Races	24035	3.33
Non-Hispanic Native Hawaiian And Pacific Islander Alone	3360	0.47
Non-Hispanic American Indian and Alaska Native Alone	2435	0.34