Race, Diversity, and Ethnicity in Decatur County, IA

The map below shows majority race by area in Decatur 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 Decatur County racial diversity and diversity scores. Click here to scroll to diversity data.

Decatur 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 Decatur County overall is white, making up 90.8% of residents. The next most-common racial group is other at 3.9%. There are more white people in the northwest areas of the county. People who identify as other are most likely to be living in the southwest 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 Decatur County

 
Self-Identified Race
Decatur County, IA Population
White
90.8%
Hispanic
3.4%
Black
1.2%
Asian
0.6%
Native American
0.2%
Other
3.9%
   

Diversity and Diversity Scores for Decatur County, IA

The map below shows diversity in Decatur 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.

Decatur County, IA map of race and ethnicity
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Colorblind friendly off

Decatur County Diversity Score

17.3

More diverse than 24% of US counties

Decatur County has a diversity score of 17.3: 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. Decatur County is less diverse than other US counties, more diverse than 24% of them. Within Decatur County's proper boundaries, the most diverse area is southwest Decatur County, and the least diverse areas are in northwest Decatur 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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