Population By Race and Ethnicity in Johnson, IL in 2011

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2011, the 12,849 population of Johnson County, Illinois comprised of 410 people who identified as Hispanic (3.19%), and 12,439 people who identified as Non-Hispanic (96.81%).

Race: The White Alone population was the largest racial group in Johnson County, Illinois with a population of 11,475 (89.31%); Black or African American Alone population was the second largest racial group with a population of 1,184 (9.22%); and Two Or More Races was the third largest racial group with a population of 111 (0.86%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Johnson County, Illinois in 2011, with a population of 11,130 (86.62%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 1,156 (9%); and the third largest ethnic group was White Alone - Hispanic with a population of 345 (2.69%).

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

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

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Hispanics and Non Hispanics in Johnson, IL in 2011
Total Population:
Race in Johnson, IL in 2011
Total Population:
Ethnicity in Johnson, IL in 2011
Total Population:
Population By Race in Johnson , IL in 2011
Race Population Percentage
Black or African American Alone 1,184 9.22%
White Alone 11,475 89.31%
American Indian and Alaska Native Alone 44 0.34%
Asian Alone 31 0.24%
Native Hawaiian And Pacific Islander Alone 4 0.03%
Two Or More Races 111 0.86%
Population By Ethnicity in Johnson , IL in 2011
Ethnicity Population Percentage
Black or African American Alone - Hispanic 28 0.22%
White Alone - Hispanic 345 2.69%
American Indian and Alaska Native Alone - Hispanic 23 0.18%
Asian Alone - Hispanic 6 0.05%
Native Hawaiian And Pacific Islander Alone - Hispanic 3 0.02%
Two Or More Races - Hispanic 5 0.04%
Black or African American Alone - Non Hispanic 1,156 9%
White Alone - Non Hispanic 11,130 86.62%
American Indian and Alaska Native Alone - Non Hispanic 21 0.16%
Asian Alone - Non Hispanic 25 0.2%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 1 0.01%
Two Or More Races - Non Hispanic 106 0.83%