Ranking of Iowa Counties By Percentage of Population that are American Indian and Alaska Native Alone in 2018

Updated on June 18, 2025.

Based on the US Census Vintage data estimates, in 2018, among all Iowa counties, Tama County had the highest percentage of its population who identified their race as American Indian and Alaska Native Alone (8.36%), followed by Woodbury County (3.11%), and Emmet County (1.56%).

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 American Indian and Alaska Native Alone Population in 2018

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 American Indian and Alaska Native Alone in 2018

Tama

Woodbury

Emmet

Crawford

Monona

Clarke

Marshall

Plymouth

Wapello

Pottawattamie

Ranking of Iowa Counties By Percentage of Pop. that are American Indian and Alaska Native Alone in 2018

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Rank	County	% of County Population
1	Tama County	8.36
2	Woodbury County	3.11
3	Emmet County	1.56
4	Crawford County	1.32
5	Monona County	1.28
6	Clarke County	1.09
7	Marshall County	0.88
7	Plymouth County	0.88
8	Wapello County	0.85
9	Pottawattamie County	0.81
10	Allamakee County	0.78
11	Page County	0.74
12	Franklin County	0.73
13	Muscatine County	0.69
14	Mills County	0.68
15	Pocahontas County	0.61
16	Buena Vista County	0.59
16	Sioux County	0.59
17	Greene County	0.55
17	Osceola County	0.55
18	Montgomery County	0.54
19	Louisa County	0.52
19	Palo Alto County	0.52
20	Webster County	0.51
20	Wright County	0.51
21	Hamilton County	0.5
22	Boone County	0.49
22	Decatur County	0.49
23	Shelby County	0.48
23	Union County	0.48
24	Adams County	0.47
25	Cass County	0.46
25	Hardin County	0.46
26	Cherokee County	0.44
26	Lyon County	0.44
26	Poweshiek County	0.44
27	Mahaska County	0.43
28	Winnebago County	0.42
29	Calhoun County	0.41
29	Henry County	0.41
29	Jones County	0.41
30	Black Hawk County	0.39
30	Fremont County	0.39
30	Jasper County	0.39
30	Scott County	0.39
31	Clinton County	0.38
31	Guthrie County	0.38
31	Madison County	0.38
31	O'Brien County	0.38
32	Humboldt County	0.37
32	Kossuth County	0.37
32	Lucas County	0.37
33	Cerro Gordo County	0.36
33	Harrison County	0.36
33	Johnson County	0.36
33	Polk County	0.36
34	Floyd County	0.35
34	Ida County	0.35
34	Worth County	0.35
35	Dallas County	0.34
35	Jackson County	0.34
36	Des Moines County	0.33
36	Hancock County	0.33
36	Jefferson County	0.33
36	Washington County	0.33
37	Clay County	0.32
37	Lee County	0.32
37	Taylor County	0.32
37	Warren County	0.32
38	Appanoose County	0.31
38	Benton County	0.31
38	Davis County	0.31
39	Carroll County	0.3
40	Dubuque County	0.29
41	Linn County	0.28
41	Ringgold County	0.28
42	Adair County	0.27
42	Story County	0.27
43	Audubon County	0.26
43	Fayette County	0.26
44	Buchanan County	0.25
44	Iowa County	0.25
45	Marion County	0.24
45	Wayne County	0.24
46	Dickinson County	0.23
46	Van Buren County	0.23
47	Clayton County	0.22
47	Howard County	0.22
47	Keokuk County	0.22
47	Monroe County	0.22
48	Cedar County	0.21
48	Mitchell County	0.21
49	Butler County	0.19
50	Bremer County	0.18
50	Sac County	0.18
51	Chickasaw County	0.15
51	Delaware County	0.15
52	Grundy County	0.14
53	Winneshiek County	0.13