Johnson County, Iowa Census 2020 Population By Race and Ethnicity

Updated on April 9, 2023.

According to the data from the US 2020 decennial Census, in April 2020, the 152.85K population of Johnson County, IA residents comprised of 10.20K residents who identified as Hispanic or Latino (6.67%), and 142.66K residents who identified as Non-Hispanic (93.33%).

Race: The White Alone population was the largest racial group in Johnson County, IA, with a population of 117.09K (76.60%). The Black or African American Alone population was the second largest racial group in Johnson County, IA, with a population of 12.85K (8.40%). The Two Or More Races population was the third largest racial group in Johnson County, IA, with a population of 9.75K (6.38%). The smallest racial group in Johnson County, IA was Native Hawaiian And Pacific Islander Alone with a population of 43 (0.03%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in Johnson County, IA, with a population of 114.49K (74.90%). The Non-Hispanic - Black Alone population was the second largest ethnic group in Johnson County, IA, with a population of 12.64K (8.27%). The Non-Hispanic - Asian Alone population was the third largest ethnic group in Johnson County, IA, with a population of 8.56K (5.60%). The smallest ethnic group in Johnson County, IA was Hispanic - Native Hawaiian & Pac. Islander with a population of 2 (0.00%).

The charts and tables below shows the population and percentage of each racial group and ethnicity group in Johnson County, Iowa from the 2020 decennial census.

You can see similar information for other Iowa counties and also for the state of Iowa.

Johnson County, IA Hispanics and Non Hispanics Population in Census 2020
Total Population:152,854
93.33%
Non Hispanic (93.33%)
Hispanic (6.67%)
Johnson County, IA Racial Groups in Census 2020
Total Population:152,854
76.60%8.40%
White Alone (76.60%)
Black or African American Alone (8.40%)
Two or more races (6.38%)
Asian Alone (5.63%)
Some Other Race Alone (2.75%)
American Indian and Alaska Native Alone (0.21%)
Native Hawaiian And Pacific Islander Alone (0.03%)
Johnson County, IA Ethnicity Groups in Census 2020
Total Population:152,854
74.90%8.27%
Non-Hispanic - White Alone (74.90%)
Non-Hispanic - Black or African American Alone (8.27%)
Non-Hispanic - Asian Alone (5.60%)
Non-Hispanic - Two or more races (4.06%)
Hispanic - Some Other Race Alone (2.40%)
Hispanic - Two or more races (2.32%)
Hispanic - White Alone (1.70%)
All Other Ethnicities (0.75%)
Johnson County, IA Population of Racial Groups in Census 2020
Race
Population
% of County Population
White Alone 117,090 76.60
Black or African American Alone 12,847 8.40
Two Or More Races 9,749 6.38
Asian Alone 8,599 5.63
Some Other Race Alone 4,204 2.75
American Indian and Alaska Native Alone 322 0.21
Native Hawaiian And Pacific Islander Alone 43 0.03
Items per page:
1 – 7 of 7
Johnson County, IA Population of Ethnicity Groups in Census 2020
Ethnicity
Population
% of County Population
Non-Hispanic - White Alone 114,491 74.90
Non-Hispanic - Black Alone 12,643 8.27
Non-Hispanic - Asian Alone 8,555 5.60
Non-Hispanic - Two or More Races 6,199 4.06
Hispanic - Some Other Race Alone 3,670 2.40
Hispanic - Two or More Races 3,550 2.32
Hispanic - White Alone 2,599 1.70
Non-Hispanic - Some Other Race Alone 534 0.35
Hispanic - Black Alone 204 0.13
Non-Hispanic - American Indian & Alaska Native 193 0.13
Hispanic - American Indian & Alaska Native 129 0.08
Hispanic - Asian Alone 44 0.03
Non-Hispanic - Native Hawaiian & Pac. Islander 41 0.03
Hispanic - Native Hawaiian & Pac. Islander 2 0.00
Items per page:
1 – 14 of 14