Ranking of Iowa Counties By Percentage of Population that are Non-Hispanic Black or African American in 2017

Updated on June 18, 2025.

Based on the US Census Vintage data estimates, in 2017, among all Iowa counties, Black Hawk County had the highest percentage of its population who identified their ethnicity as Non-Hispanic Black or African American (9.4%), followed by Scott County (7.38%), and Johnson County (7.18%).

The chart below shows the top 10 counties, and the table below shows the ranking of all Iowa counties.

You can see similar ranking information for other racial and ethnicity groups in the United States.

You can also see similar information for other states, and also the ranking of all counties in the United States.

You may also be interested in:
Ranking of Iowa Counties By Non-Hispanic Black or African American Population in 2017

Related Topics: Iowa Census Vintage Data Topic List.

Data Source: US Census Bureau (Vintage).

See this for other years:

Ranking of Iowa Counties By Percentage of Pop. that are Non-Hispanic Black or African American in 2017

Black Hawk

Scott

Johnson

Polk

Des Moines

Linn

Webster

Wapello

Dubuque

Woodbury

Ranking of Iowa Counties By Percentage of Pop. that are Non-Hispanic Black or African American in 2017

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Rank	County	% of County Population
1	Black Hawk County	9.4
2	Scott County	7.38
3	Johnson County	7.18
4	Polk County	6.84
5	Des Moines County	5.74
6	Linn County	5.5
7	Webster County	4.48
8	Wapello County	3.79
9	Dubuque County	3.54
10	Woodbury County	3.22
11	Clinton County	3.09
12	Crawford County	3.03
13	Lee County	2.98
14	Buena Vista County	2.97
15	Story County	2.7
16	Henry County	2.56
17	Page County	2.54
18	Jones County	2.49
19	Floyd County	2.42
20	Muscatine County	2.33
21	Jefferson County	2.14
22	Jasper County	2.12
23	Calhoun County	2.06
24	Dallas County	2.01
25	Marshall County	1.95
26	Mahaska County	1.83
27	Decatur County	1.72
28	Allamakee County	1.67
29	Cerro Gordo County	1.65
29	Palo Alto County	1.65
30	Pottawattamie County	1.57
31	Hardin County	1.53
32	Poweshiek County	1.37
33	Winnebago County	1.32
34	Fayette County	1.29
35	Bremer County	1.22
36	Carroll County	1.21
37	Union County	1.2
38	Boone County	1.13
39	Monroe County	1.12
40	Emmet County	1.09
41	Pocahontas County	1.05
42	Worth County	1.02
43	Kossuth County	1
44	Washington County	0.97
45	Cherokee County	0.91
46	Louisa County	0.89
47	Clarke County	0.86
48	Marion County	0.82
49	Clayton County	0.81
49	Warren County	0.81
50	O'Brien County	0.8
51	Hamilton County	0.77
52	Jackson County	0.75
53	Tama County	0.74
53	Winneshiek County	0.74
54	Delaware County	0.72
54	Hancock County	0.72
54	Wright County	0.72
55	Clay County	0.71
56	Chickasaw County	0.66
56	Plymouth County	0.66
57	Shelby County	0.65
58	Appanoose County	0.64
59	Fremont County	0.62
60	Mills County	0.6
60	Monona County	0.6
60	Ringgold County	0.6
61	Keokuk County	0.58
62	Franklin County	0.57
63	Benton County	0.56
64	Cedar County	0.55
64	Humboldt County	0.55
64	Iowa County	0.55
65	Howard County	0.54
65	Mitchell County	0.54
66	Buchanan County	0.51
67	Adair County	0.5
67	Montgomery County	0.5
67	Sioux County	0.5
68	Guthrie County	0.49
69	Madison County	0.48
70	Grundy County	0.46
70	Taylor County	0.46
70	Wayne County	0.46
71	Osceola County	0.45
72	Dickinson County	0.44
73	Greene County	0.4
74	Audubon County	0.38
74	Cass County	0.38
74	Harrison County	0.38
75	Sac County	0.35
76	Ida County	0.34
77	Lucas County	0.32
78	Lyon County	0.3
79	Adams County	0.27
79	Butler County	0.27
80	Van Buren County	0.22
81	Davis County	0.14