Williamson County, Texas 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 Williamson County, TX was 316.74K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (222.37K) and constituted 70.20% of the total.

The Hispanic or Latino of All Races ethnicity group had the second highest citizen voting-age population (57.50K) and constituted 18.15% of the total. The Non-Hispanic Black or African American Alone ethnicity group had the third highest (19.61K), constituting 6.19% 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 Texas counties, and for Texas.

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

See this for other years:

Williamson County, Texas Citizen Voting-age Population By Race and Ethnicity in 2015

Non-Hispanic White Alone

Hispanic or Latino of All Races

Non-Hispanic Black Alone

Non-Hispanic Asian Alone

Non-Hispanic Two Or More Races

Non-Hispanic American Indian & Alaska Native Alone

Non-Hispanic Native Hawaiian & Pac. Islander Alone

Williamson County, Texas 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	222365	70.20
Hispanic or Latino of All Races	57495	18.15
Non-Hispanic Black or African American Alone	19615	6.19
Non-Hispanic Asian Alone	11615	3.67
Non-Hispanic Two Or More Races	4775	1.51
Non-Hispanic American Indian and Alaska Native Alone	750	0.24
Non-Hispanic Native Hawaiian And Pacific Islander Alone	115	0.04