Ranking of Iowa Counties By Percentage of Population with Nigerian Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 1.52K people in Iowa with Nigerian ancestry (0.05% of Iowa population). Among all Iowa counties, Henry County had the highest percentage of its population with Nigerian ancestry (0.24%), followed by Johnson County (0.19%), and Linn County (0.17%).

The chart and table below shows the top 10 counties with high percentage of its population having Nigerian ancestry.

You can see similar information for other states and for other ancestry groups in Iowa.

Data Source: US Census Bureau.
Ranking of Iowa Counties By Percentage of Population with Nigerian Ancestry in 2021
Henry County
Johnson County
Linn County
Warren County
Polk County
Wayne County
Decatur County
Cass County
Hamilton County
Mahaska County
Ranking of Iowa Counties By Percentage of Population with Nigerian Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Henry County 0.24
2 Johnson County 0.19
3 Linn County 0.17
4 Warren County 0.14
5 Polk County 0.11
5 Wayne County 0.11
6 Decatur County 0.10
7 Cass County 0.05
8 Hamilton County 0.03
8 Mahaska County 0.03
8 Marshall County 0.03
8 Scott County 0.03
9 Bremer County 0.02
9 Story County 0.02
9 Woodbury County 0.02
10 Buena Vista County 0.01
10 Jackson County 0.01
10 Pottawattamie County 0.01
10 Van Buren County 0.01
11 Dubuque County 0.003
12 Black Hawk County 0.002