San Luis Obispo 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 San Luis Obispo County, CA was 217.02K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (165.24K) and constituted 76.14% of the total.

The Hispanic or Latino of All Races ethnicity group had the second highest citizen voting-age population (33.68K) and constituted 15.52% of the total. The Non-Hispanic Asian Alone ethnicity group had the third highest (7.64K), constituting 3.52% 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:

San Luis Obispo 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

San Luis Obispo 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	165235	76.14
Hispanic or Latino of All Races	33680	15.52
Non-Hispanic Asian Alone	7635	3.52
Non-Hispanic Two Or More Races	4845	2.23
Non-Hispanic Black or African American Alone	4235	1.95
Non-Hispanic American Indian and Alaska Native Alone	1165	0.54
Non-Hispanic Native Hawaiian And Pacific Islander Alone	220	0.10