Mercer, Illinois Census 2020 Population By Race and Ethnicity

Updated on February 22, 2026.

According to the data from the US 2020 decennial Census, in April 2020, the 15.70K population of Mercer, IL residents comprised of 468 residents who identified as Hispanic or Latino (2.98%), and 15.23K residents who identified as Non-Hispanic (97.02%).

Race: The White Alone population was the largest racial group in Mercer, IL, with a population of 14.76K (94.04%). The Two Or More Races population was the second largest racial group in Mercer, IL, with a population of 706 (4.50%). The Some Other Race Alone population was the third largest racial group in Mercer, IL, with a population of 84 (0.54%). The smallest racial group in Mercer, IL was Native Hawaiian And Pacific Islander Alone with a population of 2 (0.01%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in Mercer, IL, with a population of 14.58K (92.86%). The Non-Hispanic - Two or More Races population was the second largest ethnic group in Mercer, IL, with a population of 503 (3.20%). The Hispanic - Two or More Races population was the third largest ethnic group in Mercer, IL, with a population of 203 (1.29%). The smallest ethnic group in Mercer, IL was Hispanic - Native Hawaiian & Pac. Islander with a population of 0 (0.00%).

The charts and tables below shows the 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 Hispanics and Non Hispanics Population in Census 2020
Total Population:
Mercer, IL Racial Groups in Census 2020
Total Population:
Mercer, IL Ethnicity Groups in Census 2020
Total Population:
Mercer, IL Population of Racial Groups in Census 2020
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Race Population % of County Population
Black or African American Alone 77 0.49
White Alone 14763 94.04
American Indian and Alaska Native Alone 30 0.19
Asian Alone 37 0.24
Native Hawaiian And Pacific Islander Alone 2 0.01
Some Other Race Alone 84 0.54
Two Or More Races 706 4.50
Mercer, IL Population of Ethnicity Groups in Census 2020
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Ethnicity Population % of County Population
Non-Hispanic - White Alone 14578 92.86
Non-Hispanic - Two or More Races 503 3.20
Hispanic - Two or More Races 203 1.29
Hispanic - White Alone 185 1.18
Non-Hispanic - Black Alone 68 0.43
Hispanic - Some Other Race Alone 67 0.43
Non-Hispanic - Asian Alone 37 0.24
Non-Hispanic - American Indian & Alaska Native 26 0.17
Non-Hispanic - Some Other Race Alone 17 0.11
Hispanic - Black Alone 9 0.06
Hispanic - American Indian & Alaska Native 4 0.03
Non-Hispanic - Native Hawaiian & Pac. Islander 2 0.01
Hispanic - Asian Alone 0 0.00
Hispanic - Native Hawaiian & Pac. Islander 0 0.00