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Iowa Counties by Uninsured Rate

The uninsured rate is the share of the population with no health insurance coverage — influenced heavily by Medicaid eligibility and employer coverage.

All 99 counties ranked by Uninsured Rate, from lowest to highest. Click the column header to reverse sort order. Data from the U.S. Census Bureau, ACS 5-Year Estimates, 2023.

States Counties Cities Metros ZIPs
# Counties Uninsured Rate
1 Bremer County, Iowa 0.0%
2 Cherokee County, Iowa 0.0%
3 Marshall County, Iowa 1.2%
4 Calhoun County, Iowa 1.3%
5 Johnson County, Iowa 1.4%
6 Adams County, Iowa 1.5%
7 Grundy County, Iowa 2.0%
8 Emmet County, Iowa 2.1%
9 Harrison County, Iowa 2.2%
10 Warren County, Iowa 2.2%
11 Greene County, Iowa 2.2%
12 Hardin County, Iowa 2.2%
13 Hancock County, Iowa 2.4%
14 Boone County, Iowa 2.4%
15 Cedar County, Iowa 2.5%
16 Jones County, Iowa 2.7%
17 Polk County, Iowa 2.9%
18 Winneshiek County, Iowa 2.9%
19 Henry County, Iowa 2.9%
20 Mills County, Iowa 3.0%
21 Benton County, Iowa 3.0%
22 Shelby County, Iowa 3.2%
23 Audubon County, Iowa 3.2%
24 Crawford County, Iowa 3.3%
25 Guthrie County, Iowa 3.4%
26 Floyd County, Iowa 3.6%
27 Poweshiek County, Iowa 3.6%
28 Clay County, Iowa 3.6%
29 Dickinson County, Iowa 3.7%
30 Decatur County, Iowa 3.8%
31 Linn County, Iowa 3.8%
32 Kossuth County, Iowa 3.9%
33 Fremont County, Iowa 3.9%
34 Dallas County, Iowa 4.1%
35 Carroll County, Iowa 4.1%
36 Jasper County, Iowa 4.1%
37 Montgomery County, Iowa 4.3%
38 Marion County, Iowa 4.5%
39 Winnebago County, Iowa 4.5%
40 Lyon County, Iowa 4.5%
41 Palo Alto County, Iowa 4.5%
42 Mahaska County, Iowa 4.6%
43 Story County, Iowa 4.6%
44 Fayette County, Iowa 4.7%
45 Cass County, Iowa 4.7%
46 Pottawattamie County, Iowa 4.8%
47 Black Hawk County, Iowa 5.0%
48 Keokuk County, Iowa 5.0%
49 Clinton County, Iowa 5.0%
50 Cerro Gordo County, Iowa 5.0%
51 Iowa County, Iowa 5.2%
52 Sac County, Iowa 5.2%
53 Taylor County, Iowa 5.2%
54 Clarke County, Iowa 5.3%
55 Scott County, Iowa 5.4%
56 Jackson County, Iowa 5.4%
57 Wright County, Iowa 5.4%
58 Pocahontas County, Iowa 5.4%
59 Ida County, Iowa 5.5%
60 Des Moines County, Iowa 5.6%
61 Louisa County, Iowa 5.6%
62 Sioux County, Iowa 5.7%
63 Mitchell County, Iowa 5.7%
64 Monroe County, Iowa 5.8%
65 Buchanan County, Iowa 5.9%
66 Humboldt County, Iowa 6.0%
67 Page County, Iowa 6.1%
68 Buena Vista County, Iowa 6.3%
69 Delaware County, Iowa 6.5%
70 Woodbury County, Iowa 6.5%
71 Worth County, Iowa 6.6%
72 Allamakee County, Iowa 6.6%
73 Hamilton County, Iowa 6.6%
74 Dubuque County, Iowa 6.7%
75 Adair County, Iowa 6.8%
76 Clayton County, Iowa 6.8%
77 Tama County, Iowa 7.0%
78 Washington County, Iowa 7.2%
79 Jefferson County, Iowa 7.2%
80 Osceola County, Iowa 7.2%
81 Wapello County, Iowa 7.2%
82 Madison County, Iowa 7.3%
83 Appanoose County, Iowa 7.3%
84 Webster County, Iowa 7.5%
85 Chickasaw County, Iowa 7.7%
86 Muscatine County, Iowa 7.8%
87 Ringgold County, Iowa 7.9%
88 Union County, Iowa 7.9%
89 Lucas County, Iowa 7.9%
90 Butler County, Iowa 8.4%
91 O'Brien County, Iowa 8.8%
92 Howard County, Iowa 9.6%
93 Monona County, Iowa 10.4%
94 Lee County, Iowa 10.5%
95 Franklin County, Iowa 10.7%
96 Van Buren County, Iowa 12.2%
97 Wayne County, Iowa 12.5%
98 Plymouth County, Iowa 15.7%
99 Davis County, Iowa 28.3%