Mercer, Illinois Voting-age Population By Race and Ethnicity from Census 2020

Updated on February 22, 2026.

According to the data from the US 2020 decennial Census, in April 2020, the 12.29K voting-age population of Mercer, IL residents comprised of 277 residents who identified as Hispanic or Latino (2.25%), and 12.01K residents who identified as Non-Hispanic (97.75%).

Race: The White Alone voting-age population was the largest racial group in Mercer, IL, with a voting-age population of 11.66K (94.89%). The Two Or More Races voting-age population was the second largest racial group in Mercer, IL, with a voting-age population of 445 (3.62%). The Some Other Race Alone voting-age population was the third largest racial group in Mercer, IL, with a voting-age population of 72 (0.59%). The smallest racial group in Mercer, IL was Native Hawaiian And Pacific Islander Alone with a voting-age population of 2 (0.02%).

Ethnicity: The Non-Hispanic - White Alone voting-age population was the largest ethnic group in Mercer, IL, with a voting-age population of 11.56K (94.06%). The Non-Hispanic - Two or More Races voting-age population was the second largest ethnic group in Mercer, IL, with a voting-age population of 334 (2.72%). The Hispanic - Two or More Races voting-age population was the third largest ethnic group in Mercer, IL, with a voting-age population of 111 (0.90%). The smallest ethnic group in Mercer, IL was Hispanic - Native Hawaiian & Pac. Islander with a voting-age population of 0 (0.00%).

The charts and tables below shows the voting-age population and percentage of each racial group and ethnicity group in Mercer, Illinois from the 2020 decennial census.

You can see similar information for other Illinois counties and also for the state of Illinois.

Mercer, IL Voting-age Hispanics and Non Hispanics Population in Census 2020
Total Voting-age Population:
Mercer, IL Voting-age Racial Groups in Census 2020
Total Voting-age Population:
Mercer, IL Voting-age Ethnicity Groups in Census 2020
Total Voting-age Population:
Mercer, IL Voting-age Population of Racial Groups in Census 2020
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Race Voting-age Population % of County Voting-age Population
Black or African American Alone 56 0.46
White Alone 11661 94.89
American Indian and Alaska Native Alone 29 0.24
Asian Alone 24 0.20
Native Hawaiian And Pacific Islander Alone 2 0.02
Some Other Race Alone 72 0.59
Two Or More Races 445 3.62
Mercer, IL Voting-age Population of Ethnicity Groups in Census 2020
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Ethnicity Voting-age Population % of County Voting-age Population
Non-Hispanic - White Alone 11559 94.06
Non-Hispanic - Two or More Races 334 2.72
Hispanic - Two or More Races 111 0.90
Hispanic - White Alone 102 0.83
Hispanic - Some Other Race Alone 55 0.45
Non-Hispanic - Black Alone 50 0.41
Non-Hispanic - American Indian & Alaska Native 26 0.21
Non-Hispanic - Asian Alone 24 0.20
Non-Hispanic - Some Other Race Alone 17 0.14
Hispanic - Black Alone 6 0.05
Hispanic - American Indian & Alaska Native 3 0.02
Non-Hispanic - Native Hawaiian & Pac. Islander 2 0.02
Hispanic - Asian Alone 0 0.00
Hispanic - Native Hawaiian & Pac. Islander 0 0.00