St. Clair County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2019 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2019, the citizen voting-age population for St. Clair County, IL was 196.57K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (129.09K) and constituted 65.67% of the total.

The Non-Hispanic Black or African American Alone ethnicity group had the second highest citizen voting-age population (56.55K) and constituted 28.77% of the total. The Hispanic or Latino of All Races ethnicity group had the third highest (5.40K), constituting 2.75% 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:

St. Clair County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2019

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

Non-Hispanic Native Hawaiian & Pac. Islander Alone

St. Clair County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2019

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Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	129090	65.67
Non-Hispanic Black or African American Alone	56550	28.77
Hispanic or Latino of All Races	5395	2.75
Non-Hispanic Two Or More Races	3070	1.56
Non-Hispanic Asian Alone	2050	1.04
Non-Hispanic American Indian and Alaska Native Alone	385	0.20
Non-Hispanic Native Hawaiian And Pacific Islander Alone	35	0.02