Sonoma County, California Citizen Voting-age Population By Race and Ethnicity in 2018 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2018, the citizen voting-age population for Sonoma County, CA was 356.02K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (269.90K) and constituted 75.81% of the total.

The Hispanic or Latino of All Races ethnicity group had the second highest citizen voting-age population (55.48K) and constituted 15.58% of the total. The Non-Hispanic Asian Alone ethnicity group had the third highest (12.99K), constituting 3.65% 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:

Sonoma County, California Citizen Voting-age Population By Race and Ethnicity in 2018

Non-Hispanic White Alone

Hispanic or Latino of All Races

Non-Hispanic Asian Alone

Non-Hispanic Two Or More Races

Non-Hispanic Black Alone

Non-Hispanic American Indian & Alaska Native Alone

Non-Hispanic Native Hawaiian & Pac. Islander Alone

Sonoma County, California Citizen Voting-age Population By Race and Ethnicity in 2018

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Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	269895	75.81
Hispanic or Latino of All Races	55480	15.58
Non-Hispanic Asian Alone	12985	3.65
Non-Hispanic Two Or More Races	10075	2.83
Non-Hispanic Black or African American Alone	4865	1.37
Non-Hispanic American Indian and Alaska Native Alone	1775	0.50
Non-Hispanic Native Hawaiian And Pacific Islander Alone	945	0.27