Marion, 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 37.73K population of Marion, IL residents comprised of 712 residents who identified as Hispanic or Latino (1.89%), and 37.02K residents who identified as Non-Hispanic (98.11%).

Race: The White Alone population was the largest racial group in Marion, IL, with a population of 33.44K (88.63%). The Two Or More Races population was the second largest racial group in Marion, IL, with a population of 2.06K (5.47%). The Black or African American Alone population was the third largest racial group in Marion, IL, with a population of 1.51K (4.01%). The smallest racial group in Marion, IL was Native Hawaiian And Pacific Islander Alone with a population of 4 (0.01%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in Marion, IL, with a population of 33.15K (87.86%). The Non-Hispanic - Two or More Races population was the second largest ethnic group in Marion, IL, with a population of 1.82K (4.82%). The Non-Hispanic - Black Alone population was the third largest ethnic group in Marion, IL, with a population of 1.51K (4.00%). The smallest ethnic group in Marion, IL was Hispanic - Asian Alone 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 Marion, Illinois from the 2020 decennial census.

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

Marion, IL Hispanics and Non Hispanics Population in Census 2020
Total Population:
Marion, IL Racial Groups in Census 2020
Total Population:
Marion, IL Ethnicity Groups in Census 2020
Total Population:
Marion, IL Population of Racial Groups in Census 2020
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Race Population % of County Population
Black or African American Alone 1514 4.01
White Alone 33440 88.63
American Indian and Alaska Native Alone 116 0.31
Asian Alone 349 0.93
Native Hawaiian And Pacific Islander Alone 4 0.01
Some Other Race Alone 243 0.64
Two Or More Races 2063 5.47
Marion, IL Population of Ethnicity Groups in Census 2020
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Ethnicity Population % of County Population
Non-Hispanic - White Alone 33150 87.86
Non-Hispanic - Two or More Races 1817 4.82
Non-Hispanic - Black Alone 1509 4.00
Non-Hispanic - Asian Alone 349 0.93
Hispanic - White Alone 290 0.77
Hispanic - Two or More Races 246 0.65
Hispanic - Some Other Race Alone 146 0.39
Non-Hispanic - Some Other Race Alone 97 0.26
Non-Hispanic - American Indian & Alaska Native 94 0.25
Hispanic - American Indian & Alaska Native 22 0.06
Hispanic - Black Alone 5 0.01
Hispanic - Native Hawaiian & Pac. Islander 3 0.01
Non-Hispanic - Native Hawaiian & Pac. Islander 1 0.00
Hispanic - Asian Alone 0 0.00