Population By Race and Ethnicity in Johnson County, IA in 2021

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2021, the 155,035 population of Johnson County, Iowa comprised of 10,401 people who identified as Hispanic (6.71%), and 144,634 people who identified as Non-Hispanic (93.29%).

Race: The White Alone population was the largest racial group in Johnson County, Iowa with a population of 127,694 (82.37%); Black or African American Alone population was the second largest racial group with a population of 12,687 (8.18%); and Asian Alone was the third largest racial group with a population of 9,853 (6.36%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Johnson County, Iowa in 2021, with a population of 118,497 (76.43%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 12,258 (7.91%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 9,762 (6.3%).

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 2021
Total Population:155,035
93.29%
Non Hispanic (93.29%)
Hispanic (6.71%)
Race in Johnson County, IA in 2021
Total Population:155,035
82.37%8.18%
White Alone (82.37%)
Black or African American Alone (8.18%)
Asian Alone (6.36%)
Two or more races (2.64%)
American Indian and Alaska Native Alone (0.39%)
Native Hawaiian And Pacific Islander Alone (0.07%)
Ethnicity in Johnson County, IA in 2021
Total Population:155,035
76.43%7.91%
Non-Hispanic White Alone (76.43%)
Non-Hispanic Black or African American Alone (7.91%)
Non-Hispanic Asian Alone (6.3%)
Hispanic White Alone (5.93%)
Non-Hispanic Two or more races (2.4%)
All Other Ethnicities (1.03%)
Population By Race in Johnson , IA in 2021
Race
Population
Percentage
White Alone 127,694 82.37%
Black or African American Alone 12,687 8.18%
Asian Alone 9,853 6.36%
Two Or More Races 4,096 2.64%
American Indian and Alaska Native Alone 604 0.39%
Native Hawaiian And Pacific Islander Alone 101 0.07%
Population By Ethnicity in Johnson , IA in 2021
Ethnicity
Population
Percentage
White Alone - Non Hispanic 118,497 76.43%
Black or African American Alone - Non Hispanic 12,258 7.91%
Asian Alone - Non Hispanic 9,762 6.3%
White Alone - Hispanic 9,197 5.93%
Two Or More Races - Non Hispanic 3,716 2.4%
Black or African American Alone - Hispanic 429 0.28%
Two Or More Races - Hispanic 380 0.25%
American Indian and Alaska Native Alone - Non Hispanic 320 0.21%
American Indian and Alaska Native Alone - Hispanic 284 0.18%
Asian Alone - Hispanic 91 0.06%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 81 0.05%
Native Hawaiian And Pacific Islander Alone - Hispanic 20 0.01%