Johnson, Iowa Census 2020 Population By Race and Ethnicity

Updated on February 22, 2026.

According to the data from the US 2020 decennial Census, in April 2020, the 152.85K population of Johnson, 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, IA, with a population of 117.09K (76.60%). The Black or African American Alone population was the second largest racial group in Johnson, IA, with a population of 12.85K (8.40%). The Two Or More Races population was the third largest racial group in Johnson, IA, with a population of 9.75K (6.38%). The smallest racial group in Johnson, 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, IA, with a population of 114.49K (74.90%). The Non-Hispanic - Black Alone population was the second largest ethnic group in Johnson, IA, with a population of 12.64K (8.27%). The Non-Hispanic - Asian Alone population was the third largest ethnic group in Johnson, IA, with a population of 8.56K (5.60%). The smallest ethnic group in Johnson, 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, Iowa from the 2020 decennial census.

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

Johnson, IA Hispanics and Non Hispanics Population in Census 2020
Total Population:
Johnson, IA Racial Groups in Census 2020
Total Population:
Johnson, IA Ethnicity Groups in Census 2020
Total Population:
Johnson, IA Population of Racial Groups in Census 2020
Items per page:
0 of 0
Race Population % of County Population
Black or African American Alone 12847 8.40
White Alone 117090 76.60
American Indian and Alaska Native Alone 322 0.21
Asian Alone 8599 5.63
Native Hawaiian And Pacific Islander Alone 43 0.03
Some Other Race Alone 4204 2.75
Two Or More Races 9749 6.38
Johnson, IA Population of Ethnicity Groups in Census 2020
Items per page:
0 of 0
Ethnicity Population % of County Population
Non-Hispanic - White Alone 114491 74.90
Non-Hispanic - Black Alone 12643 8.27
Non-Hispanic - Asian Alone 8555 5.60
Non-Hispanic - Two or More Races 6199 4.06
Hispanic - Some Other Race Alone 3670 2.40
Hispanic - Two or More Races 3550 2.32
Hispanic - White Alone 2599 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