Race, Diversity, and Ethnicity in Johnson County, IA

The map below shows majority race by area in Johnson County, as self-identified on the US census. Darker shades indicate a larger racial majority in that neighborhood. This page also contains data and maps on Johnson County racial diversity and diversity scores. Click here to scroll to diversity data.

Johnson County, IA map of race and ethnicity
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White
Hispanic
Black
Asian
Multiple/Other
WhiteHispanicBlackAsianMultiple/Other
Majority race by area

The majority race in Johnson County overall is white, making up 74.5% of residents. The next most-common racial group is black at 7.7%. There are more white people in the northeast areas of the county. People who identify as black are most likely to be living in the west places. The data below shows how many people identify themselves as each of the following races, which most Americans base on their family's national origin:

Race in Johnson County

 
Self-Identified Race
Johnson County, IA Population
White
74.5%
Hispanic
6.8%
Black
7.7%
Asian
5.8%
Native American
0.1%
Other
5.2%
   

Diversity and Diversity Scores for Johnson County, IA

The map below shows diversity in Johnson County. Areas in green are more diverse, while areas in red are much less diverse. Diversity, in this case, means a mixture of people with different race and ethnicity living close to one another. For example, all-black and all-white areas in the county would both be considered lacking diversity.

Johnson County, IA map of race and ethnicity
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Johnson County Diversity Score

42.9

More diverse than 63% of US counties

Johnson County has a diversity score of 42.9: the chance, in percent, that two residents picked at random belong to different racial or ethnic groups, from ACS race counts. A place where everyone shares one group scores 0, and an even mix of the six groups in the chart above scores the maximum, 83.3. Johnson County is more diverse than other US counties, more diverse than 63% of them. Within Johnson County's proper boundaries, the most diverse area is south Johnson County, and the least diverse areas are in northeast Johnson County.

Source: BestNeighborhood calculations from the U.S. Census Bureau, American Community Survey (ACS) 2020-2024 5-year estimates (race and Hispanic origin); proprietary data mapping and analysis. Special thanks to the University of Virginia.

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