Population By Race and Ethnicity in Johnson County, IA in 2017

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2017, the 149,703 population of Johnson County, Iowa comprised of 8,399 people who identified as Hispanic (5.61%), and 141,304 people who identified as Non-Hispanic (94.39%).

Race: The White Alone population was the largest racial group in Johnson County, Iowa with a population of 124,529 (83.18%); Black or African American Alone population was the second largest racial group with a population of 11,146 (7.45%); and Asian Alone was the third largest racial group with a population of 9,833 (6.57%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Johnson County, Iowa in 2017, with a population of 117,215 (78.3%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 10,754 (7.18%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 9,730 (6.5%).

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 2017
Total Population:
Race in Johnson County, IA in 2017
Total Population:
Ethnicity in Johnson County, IA in 2017
Total Population:
Population By Race in Johnson , IA in 2017
Race Population Percentage
Black or African American Alone 11,146 7.45%
White Alone 124,529 83.18%
American Indian and Alaska Native Alone 507 0.34%
Asian Alone 9,833 6.57%
Native Hawaiian And Pacific Islander Alone 67 0.05%
Two Or More Races 3,621 2.42%
Population By Ethnicity in Johnson , IA in 2017
Ethnicity Population Percentage
Black or African American Alone - Hispanic 392 0.26%
White Alone - Hispanic 7,314 4.89%
American Indian and Alaska Native Alone - Hispanic 236 0.16%
Asian Alone - Hispanic 103 0.07%
Native Hawaiian And Pacific Islander Alone - Hispanic 17 0.01%
Two Or More Races - Hispanic 337 0.23%
Black or African American Alone - Non Hispanic 10,754 7.18%
White Alone - Non Hispanic 117,215 78.3%
American Indian and Alaska Native Alone - Non Hispanic 271 0.18%
Asian Alone - Non Hispanic 9,730 6.5%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 50 0.03%
Two Or More Races - Non Hispanic 3,284 2.19%