Population By Race and Ethnicity in Johnson County, IL in 2018

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2018, the 12,380 population of Johnson County, Illinois comprised of 388 people who identified as Hispanic (3.13%), and 11,992 people who identified as Non-Hispanic (96.87%).

Race: The White Alone population was the largest racial group in Johnson County, Illinois with a population of 11,270 (91.03%); Black or African American Alone population was the second largest racial group with a population of 882 (7.12%); and Two Or More Races was the third largest racial group with a population of 137 (1.11%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Johnson County, Illinois in 2018, with a population of 10,948 (88.43%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 854 (6.9%); and the third largest ethnic group was White Alone - Hispanic with a population of 322 (2.6%).

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.

See this for other years:
Hispanics and Non Hispanics in Johnson County, IL in 2018
Total Population:
Race in Johnson County, IL in 2018
Total Population:
Ethnicity in Johnson County, IL in 2018
Total Population:
Population By Race in Johnson , IL in 2018
Race Population Percentage
Black or African American Alone 882 7.12%
White Alone 11,270 91.03%
American Indian and Alaska Native Alone 47 0.38%
Asian Alone 40 0.32%
Native Hawaiian And Pacific Islander Alone 4 0.03%
Two Or More Races 137 1.11%
Population By Ethnicity in Johnson , IL in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 28 0.23%
White Alone - Hispanic 322 2.6%
American Indian and Alaska Native Alone - Hispanic 26 0.21%
Asian Alone - Hispanic 6 0.05%
Native Hawaiian And Pacific Islander Alone - Hispanic 3 0.02%
Two Or More Races - Hispanic 3 0.02%
Black or African American Alone - Non Hispanic 854 6.9%
White Alone - Non Hispanic 10,948 88.43%
American Indian and Alaska Native Alone - Non Hispanic 21 0.17%
Asian Alone - Non Hispanic 34 0.28%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 1 0.01%
Two Or More Races - Non Hispanic 134 1.08%