Population By Race and Ethnicity in Williamson, TX in 2021

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2021, the 644,595 population of Williamson County, Texas comprised of 158,501 people who identified as Hispanic (24.59%), and 486,094 people who identified as Non-Hispanic (75.41%).

Race: The White Alone population was the largest racial group in Williamson County, Texas with a population of 507,972 (78.81%); Asian Alone population was the second largest racial group with a population of 59,569 (9.24%); and Black or African American Alone was the third largest racial group with a population of 50,334 (7.81%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Williamson County, Texas in 2021, with a population of 364,160 (56.49%); the second largest ethnic group was White Alone - Hispanic with a population of 143,812 (22.31%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 57,981 (8.99%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Williamson, Texas.

You can find similar information for other Texas counties, and for Texas.

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Hispanics and Non Hispanics in Williamson, TX in 2021
Total Population:
Race in Williamson, TX in 2021
Total Population:
Ethnicity in Williamson, TX in 2021
Total Population:
Population By Race in Williamson , TX in 2021
Race Population Percentage
Black or African American Alone 50,334 7.81%
White Alone 507,972 78.81%
American Indian and Alaska Native Alone 5,660 0.88%
Asian Alone 59,569 9.24%
Native Hawaiian And Pacific Islander Alone 1,106 0.17%
Two Or More Races 19,954 3.1%
Population By Ethnicity in Williamson , TX in 2021
Ethnicity Population Percentage
Black or African American Alone - Hispanic 4,861 0.75%
White Alone - Hispanic 143,812 22.31%
American Indian and Alaska Native Alone - Hispanic 3,544 0.55%
Asian Alone - Hispanic 1,588 0.25%
Native Hawaiian And Pacific Islander Alone - Hispanic 395 0.06%
Two Or More Races - Hispanic 4,301 0.67%
Black or African American Alone - Non Hispanic 45,473 7.06%
White Alone - Non Hispanic 364,160 56.49%
American Indian and Alaska Native Alone - Non Hispanic 2,116 0.33%
Asian Alone - Non Hispanic 57,981 8.99%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 711 0.11%
Two Or More Races - Non Hispanic 15,653 2.43%