Population By Race and Ethnicity in Williamson County, IL in 2020

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2020, the 67,113 population of Williamson County, Illinois comprised of 1,938 people who identified as Hispanic (2.89%), and 65,175 people who identified as Non-Hispanic (97.11%).

Race: The White Alone population was the largest racial group in Williamson County, Illinois with a population of 61,323 (91.37%); Black or African American Alone population was the second largest racial group with a population of 3,288 (4.9%); and Two Or More Races was the third largest racial group with a population of 1,292 (1.93%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Williamson County, Illinois in 2020, with a population of 59,671 (88.91%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 3,164 (4.71%); and the third largest ethnic group was White Alone - Hispanic with a population of 1,652 (2.46%).

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

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

See this for other years:
Hispanics and Non Hispanics in Williamson County, IL in 2020
Total Population:
Race in Williamson County, IL in 2020
Total Population:
Ethnicity in Williamson County, IL in 2020
Total Population:
Population By Race in Williamson , IL in 2020
Race Population Percentage
Black or African American Alone 3,288 4.9%
White Alone 61,323 91.37%
American Indian and Alaska Native Alone 301 0.45%
Asian Alone 890 1.33%
Native Hawaiian And Pacific Islander Alone 19 0.03%
Two Or More Races 1,292 1.93%
Population By Ethnicity in Williamson , IL in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 124 0.19%
White Alone - Hispanic 1,652 2.46%
American Indian and Alaska Native Alone - Hispanic 81 0.12%
Asian Alone - Hispanic 8 0.01%
Native Hawaiian And Pacific Islander Alone - Hispanic 4 0.01%
Two Or More Races - Hispanic 69 0.1%
Black or African American Alone - Non Hispanic 3,164 4.71%
White Alone - Non Hispanic 59,671 88.91%
American Indian and Alaska Native Alone - Non Hispanic 220 0.33%
Asian Alone - Non Hispanic 882 1.31%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 15 0.02%
Two Or More Races - Non Hispanic 1,223 1.82%