Brown 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 Brown County, IL was 5.18K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (3.68K) and constituted 71.11% of the total.

The Non-Hispanic Black or African American Alone ethnicity group had the second highest citizen voting-age population (1.17K) and constituted 22.61% of the total. The Hispanic or Latino of All Races ethnicity group had the third highest (295), constituting 5.70% 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:

Brown 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 American Indian & Alaska Native Alone

Non-Hispanic Asian Alone

Brown 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	3680	71.11
Non-Hispanic Black or African American Alone	1170	22.61
Hispanic or Latino of All Races	295	5.70
Non-Hispanic Two Or More Races	14	0.27
Non-Hispanic American Indian and Alaska Native Alone	10	0.19
Non-Hispanic Asian Alone	4	0.08