Population By Race and Ethnicity in Johnson County, IA in 2019

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2019, the 152,480 population of Johnson County, Iowa comprised of 8,863 people who identified as Hispanic (5.81%), and 143,617 people who identified as Non-Hispanic (94.19%).

Race: The White Alone population was the largest racial group in Johnson County, Iowa with a population of 125,867 (82.55%); Black or African American Alone population was the second largest racial group with a population of 12,130 (7.96%); and Asian Alone was the third largest racial group with a population of 9,955 (6.53%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Johnson County, Iowa in 2019, with a population of 118,107 (77.46%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 11,737 (7.7%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 9,847 (6.46%).

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

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

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Hispanics and Non Hispanics in Johnson County, IA in 2019
Total Population:
Race in Johnson County, IA in 2019
Total Population:
Ethnicity in Johnson County, IA in 2019
Total Population:
Population By Race in Johnson , IA in 2019
Race Population Percentage
Black or African American Alone 12,130 7.96%
White Alone 125,867 82.55%
American Indian and Alaska Native Alone 536 0.35%
Asian Alone 9,955 6.53%
Native Hawaiian And Pacific Islander Alone 82 0.05%
Two Or More Races 3,910 2.56%
Population By Ethnicity in Johnson , IA in 2019
Ethnicity Population Percentage
Black or African American Alone - Hispanic 393 0.26%
White Alone - Hispanic 7,760 5.09%
American Indian and Alaska Native Alone - Hispanic 235 0.15%
Asian Alone - Hispanic 108 0.07%
Native Hawaiian And Pacific Islander Alone - Hispanic 16 0.01%
Two Or More Races - Hispanic 351 0.23%
Black or African American Alone - Non Hispanic 11,737 7.7%
White Alone - Non Hispanic 118,107 77.46%
American Indian and Alaska Native Alone - Non Hispanic 301 0.2%
Asian Alone - Non Hispanic 9,847 6.46%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 66 0.04%
Two Or More Races - Non Hispanic 3,559 2.33%