Population By Race and Ethnicity in Johnson County, IA in 2015

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2015, the 145,114 population of Johnson County, Iowa comprised of 7,883 people who identified as Hispanic (5.43%), and 137,231 people who identified as Non-Hispanic (94.57%).

Race: The White Alone population was the largest racial group in Johnson County, Iowa with a population of 122,195 (84.21%); Black or African American Alone population was the second largest racial group with a population of 9,628 (6.64%); and Asian Alone was the third largest racial group with a population of 9,321 (6.42%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Johnson County, Iowa in 2015, with a population of 115,340 (79.48%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 9,291 (6.4%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 9,216 (6.35%).

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.

See this for other years:
Hispanics and Non Hispanics in Johnson County, IA in 2015
Total Population:
Race in Johnson County, IA in 2015
Total Population:
Ethnicity in Johnson County, IA in 2015
Total Population:
Population By Race in Johnson , IA in 2015
Race Population Percentage
Black or African American Alone 9,628 6.64%
White Alone 122,195 84.21%
American Indian and Alaska Native Alone 507 0.35%
Asian Alone 9,321 6.42%
Native Hawaiian And Pacific Islander Alone 72 0.05%
Two Or More Races 3,391 2.34%
Population By Ethnicity in Johnson , IA in 2015
Ethnicity Population Percentage
Black or African American Alone - Hispanic 337 0.23%
White Alone - Hispanic 6,855 4.72%
American Indian and Alaska Native Alone - Hispanic 225 0.16%
Asian Alone - Hispanic 105 0.07%
Native Hawaiian And Pacific Islander Alone - Hispanic 20 0.01%
Two Or More Races - Hispanic 341 0.24%
Black or African American Alone - Non Hispanic 9,291 6.4%
White Alone - Non Hispanic 115,340 79.48%
American Indian and Alaska Native Alone - Non Hispanic 282 0.19%
Asian Alone - Non Hispanic 9,216 6.35%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 52 0.04%
Two Or More Races - Non Hispanic 3,050 2.1%