Williamson County, Texas Citizen Voting-age Population By Race and Ethnicity in 2021 (ACS-5Yrs)

Updated on March 26, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen voting-age population for Williamson County, TX was 402.51K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (261.73K) and constituted 65.03% of the total.

The Hispanic or Latino of All Races ethnicity group had the second highest citizen voting-age population (83.78K) and constituted 20.82% of the total. The Non-Hispanic Black or African American Alone ethnicity group had the third highest (26.94K), constituting 6.69% 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 2021

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 2021

0 of 0

Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	261730	65.03
Hispanic or Latino of All Races	83780	20.82
Non-Hispanic Black or African American Alone	26940	6.69
Non-Hispanic Asian Alone	18775	4.67
Non-Hispanic Two Or More Races	10380	2.58
Non-Hispanic American Indian and Alaska Native Alone	505	0.13
Non-Hispanic Native Hawaiian And Pacific Islander Alone	395	0.10