Population By Race and Ethnicity in Williamson County, TX in 2021

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2021, the 644,451 population of Williamson County, Texas comprised of 162,826 people who identified as Hispanic (25.27%), and 481,625 people who identified as Non-Hispanic (74.73%).

Race: The White Alone population was the largest racial group in Williamson County, Texas with a population of 508,335 (78.88%); Asian Alone population was the second largest racial group with a population of 59,210 (9.19%); and Black or African American Alone was the third largest racial group with a population of 50,117 (7.78%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Williamson County, Texas in 2021, with a population of 360,566 (55.95%); the second largest ethnic group was White Alone - Hispanic with a population of 147,769 (22.93%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 57,593 (8.94%).

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 County, TX in 2021
Total Population:
Race in Williamson County, TX in 2021
Total Population:
Ethnicity in Williamson County, TX in 2021
Total Population:
Population By Race in Williamson , TX in 2021
Race Population Percentage
Black or African American Alone 50,117 7.78%
White Alone 508,335 78.88%
American Indian and Alaska Native Alone 5,760 0.89%
Asian Alone 59,210 9.19%
Native Hawaiian And Pacific Islander Alone 1,104 0.17%
Two Or More Races 19,925 3.09%
Population By Ethnicity in Williamson , TX in 2021
Ethnicity Population Percentage
Black or African American Alone - Hispanic 5,000 0.78%
White Alone - Hispanic 147,769 22.93%
American Indian and Alaska Native Alone - Hispanic 3,649 0.57%
Asian Alone - Hispanic 1,617 0.25%
Native Hawaiian And Pacific Islander Alone - Hispanic 394 0.06%
Two Or More Races - Hispanic 4,397 0.68%
Black or African American Alone - Non Hispanic 45,117 7%
White Alone - Non Hispanic 360,566 55.95%
American Indian and Alaska Native Alone - Non Hispanic 2,111 0.33%
Asian Alone - Non Hispanic 57,593 8.94%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 710 0.11%
Two Or More Races - Non Hispanic 15,528 2.41%