Ranking of Iowa Counties By Percentage of Population that were Black or African American Alone from Census 2020

Updated on February 25, 2023.

According to the data from the United States 2020 decennial Census for Iowa counties, in April 2020, among all Iowa counties, Black Hawk County had the highest percentage of its population that identified their race as Black or African American Alone (10.43%), followed by Johnson County (8.40%), and Scott County (8.08%).

The chart below shows the top 10 counties, and the table below shows the ranking of all Iowa counties based on the percentage of the population that identified as Black or African American Alone.

You can see similar ranking information for other states. You can also see similar rankings of counties for other racial groups as well as for the different ethnicities in Iowa.

Ranking of Iowa Counties By Percentage of Pop. that were Black or African American Alone from Census 2020
Black Hawk
Johnson
Scott
Polk
Linn
Des Moines
Webster
Woodbury
Dubuque
Wapello
Ranking of Iowa Counties By Percentage of Pop. that were Black or African American Alone from Census 2020
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Rank County Black Alone % of County Pop.
1 Black Hawk County 10.43
2 Johnson County 8.40
3 Scott County 8.08
4 Polk County 7.24
5 Linn County 7.14
6 Des Moines County 6.51
7 Webster County 4.93
8 Woodbury County 4.91
9 Dubuque County 4.16
10 Wapello County 4.14
11 Clinton County 3.06
12 Story County 3.06
13 Buena Vista County 2.84
14 Dallas County 2.71
15 Lee County 2.71
16 Floyd County 2.68
17 Jefferson County 2.68
18 Muscatine County 2.64
19 Henry County 2.47
20 Page County 2.40
21 Crawford County 2.38
22 Cerro Gordo County 2.16
23 Jones County 2.14
24 Marshall County 2.03
25 Pottawattamie County 2.02
26 Winnebago County 2.00
27 Jasper County 1.86
28 Mahaska County 1.78
29 Poweshiek County 1.76
30 Calhoun County 1.53
31 Decatur County 1.41
32 Plymouth County 1.39
33 Carroll County 1.26
34 O'Brien County 1.14
35 Boone County 1.13
36 Allamakee County 1.10
37 Fayette County 1.04
38 Emmet County 0.98
39 Union County 0.97
40 Bremer County 0.96
41 Clayton County 0.93
42 Pocahontas County 0.93
43 Hardin County 0.87
44 Marion County 0.87
45 Warren County 0.87
46 Washington County 0.83
47 Worth County 0.81
48 Tama County 0.80
49 Jackson County 0.78
50 Cherokee County 0.75
51 Louisa County 0.72
52 Delaware County 0.70
53 Hancock County 0.70
54 Hamilton County 0.69
55 Chickasaw County 0.67
56 Iowa County 0.67
57 Winneshiek County 0.65
58 Adair County 0.61
59 Appanoose County 0.61
60 Clay County 0.61
61 Humboldt County 0.58
62 Palo Alto County 0.58
63 Wright County 0.58
64 Sioux County 0.54
65 Kossuth County 0.53
66 Mills County 0.53
67 Keokuk County 0.51
68 Osceola County 0.48
69 Sac County 0.47
70 Benton County 0.45
71 Cedar County 0.45
72 Clarke County 0.45
73 Dickinson County 0.45
74 Shelby County 0.45
75 Ida County 0.44
76 Grundy County 0.40
77 Mitchell County 0.40
78 Van Buren County 0.39
79 Buchanan County 0.35
80 Guthrie County 0.34
81 Lyon County 0.34
82 Adams County 0.32
83 Franklin County 0.32
84 Greene County 0.32
85 Monona County 0.32
86 Audubon County 0.30
87 Madison County 0.30
88 Lucas County 0.27
89 Monroe County 0.25
90 Howard County 0.24
91 Montgomery County 0.24
92 Cass County 0.22
93 Harrison County 0.19
94 Butler County 0.18
95 Fremont County 0.17
96 Wayne County 0.15
97 Davis County 0.09
98 Ringgold County 0.06
99 Taylor County 0.03