Williamson County, Illinois 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, IL was 51.85K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (47.61K) and constituted 91.83% of the total.

The Non-Hispanic Black or African American Alone ethnicity group had the second highest citizen voting-age population (2.14K) and constituted 4.13% of the total. The Hispanic or Latino of All Races ethnicity group had the third highest (1.02K), constituting 1.97% 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 Illinois counties, and for Illinois.

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

See this for other years:

Williamson County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2021

Non-Hispanic White Alone

Non-Hispanic Black Alone

Hispanic or Latino of All Races

Non-Hispanic Two Or More Races

Non-Hispanic Asian Alone

Non-Hispanic American Indian & Alaska Native Alone

Williamson County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2021

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Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	47610	91.83
Non-Hispanic Black or African American Alone	2140	4.13
Hispanic or Latino of All Races	1020	1.97
Non-Hispanic Two Or More Races	640	1.23
Non-Hispanic Asian Alone	315	0.61
Non-Hispanic American Indian and Alaska Native Alone	125	0.24