Population By Race and Ethnicity in Marion, IL in 2018

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2018, the 37,453 population of Marion County, Illinois comprised of 795 people who identified as Hispanic (2.12%), and 36,658 people who identified as Non-Hispanic (97.88%).

Race: The White Alone population was the largest racial group in Marion County, Illinois with a population of 34,689 (92.62%); Black or African American Alone population was the second largest racial group with a population of 1,620 (4.33%); and Two Or More Races was the third largest racial group with a population of 757 (2.02%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Marion County, Illinois in 2018, with a population of 34,030 (90.86%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 1,577 (4.21%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 701 (1.87%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Marion, Illinois.

You can find similar information for other Illinois counties, and for Illinois.

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Hispanics and Non Hispanics in Marion, IL in 2018
Total Population:
Race in Marion, IL in 2018
Total Population:
Ethnicity in Marion, IL in 2018
Total Population:
Population By Race in Marion , IL in 2018
Race Population Percentage
Black or African American Alone 1,620 4.33%
White Alone 34,689 92.62%
American Indian and Alaska Native Alone 136 0.36%
Asian Alone 241 0.64%
Native Hawaiian And Pacific Islander Alone 10 0.03%
Two Or More Races 757 2.02%
Population By Ethnicity in Marion , IL in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 43 0.12%
White Alone - Hispanic 659 1.76%
American Indian and Alaska Native Alone - Hispanic 34 0.09%
Asian Alone - Hispanic 2 0.01%
Native Hawaiian And Pacific Islander Alone - Hispanic 1 0%
Two Or More Races - Hispanic 56 0.15%
Black or African American Alone - Non Hispanic 1,577 4.21%
White Alone - Non Hispanic 34,030 90.86%
American Indian and Alaska Native Alone - Non Hispanic 102 0.27%
Asian Alone - Non Hispanic 239 0.64%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 9 0.02%
Two Or More Races - Non Hispanic 701 1.87%