Data / Rankings / Uninsured rate, ages 35 to 64 (US, ACS) / Counties in Iowa

Counties in Iowa by uninsured rate, ages 35 to 64 (US, ACS)

Davis County had the highest uninsured rate, ages 35 to 64 (US, ACS) of 99 counties in 2021, at 25.3%. Iowa County had the lowest, at 2.5%. The median was 6.1% and the figure for Iowa was 6%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest25.3Davis County
Lowest2.5Iowa County
Median6.199 counties
Iowa6History

Map of counties, 2021

Adair County: 3.6 %Adams County: 8.6 %Allamakee County: 6.4 %Appanoose County: 7.9 %Audubon County: 7.3 %Benton County: 4 %Black Hawk County: 5.7 %Boone County: 4.4 %Bremer County: 4 %Buchanan County: 4.7 %Buena Vista County: 8.2 %Butler County: 4.5 %Calhoun County: 4.8 %Carroll County: 3.5 %Cass County: 8 %Cedar County: 3.1 %Cerro Gordo County: 4.6 %Cherokee County: 10.4 %Chickasaw County: 9.7 %Clarke County: 7.7 %Clay County: 7.3 %Clayton County: 6.9 %Clinton County: 9.1 %Crawford County: 13.8 %Dallas County: 4.6 %Davis County: 25.3 %Decatur County: 8 %Delaware County: 3 %Des Moines County: 5.1 %Dickinson County: 6.6 %Dubuque County: 4.5 %Emmet County: 4.9 %Fayette County: 6.8 %Floyd County: 7.1 %Franklin County: 12.8 %Fremont County: 5.4 %Greene County: 4.4 %Grundy County: 4.8 %Guthrie County: 5 %Hamilton County: 5.3 %Hancock County: 4.8 %Hardin County: 5.5 %Harrison County: 5.1 %Henry County: 4.1 %Howard County: 10.8 %Humboldt County: 7.5 %Ida County: 8 %Iowa County: 2.5 %Jackson County: 5.9 %Jasper County: 4.7 %Jefferson County: 7.4 %Johnson County: 5.4 %Jones County: 3.1 %Keokuk County: 5.2 %Kossuth County: 6.1 %Lee County: 6.5 %Linn County: 4.3 %Louisa County: 8.3 %Lucas County: 9.8 %Lyon County: 6.3 %Madison County: 3.7 %Mahaska County: 8.4 %Marion County: 5.8 %Marshall County: 8.2 %Mills County: 5.3 %Mitchell County: 6.1 %Monona County: 7.5 %Monroe County: 4.4 %Montgomery County: 3.3 %Muscatine County: 6.1 %O'Brien County: 4.2 %Osceola County: 6 %Page County: 6.2 %Palo Alto County: 5.5 %Plymouth County: 6.2 %Pocahontas County: 8.7 %Polk County: 5.8 %Pottawattamie County: 7.2 %Poweshiek County: 5.7 %Ringgold County: 12.5 %Sac County: 8.5 %Scott County: 6.4 %Shelby County: 5.1 %Sioux County: 7.5 %Story County: 5.4 %Tama County: 9.6 %Taylor County: 6 %Union County: 10.9 %Van Buren County: 14.3 %Wapello County: 8.6 %Warren County: 2.7 %Washington County: 8.8 %Wayne County: 6.8 %Webster County: 7.4 %Winnebago County: 3 %Winneshiek County: 3 %Woodbury County: 8.3 %Worth County: 6.1 %Wright County: 7.1 %
  • Under 4.4
  • 4.4 to 5.2
  • 5.2 to 6.1
  • 6.1 to 7.3
  • 7.3 to 8.5
  • 8.5 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Davis County: 25.3 %Davis County25.3Van Buren County: 14.3 %Van Buren County14.3Crawford County: 13.8 %Crawford County13.8Franklin County: 12.8 %Franklin County12.8Ringgold County: 12.5 %Ringgold County12.5Union County: 10.9 %Union County10.9Howard County: 10.8 %Howard County10.8Cherokee County: 10.4 %Cherokee County10.4Lucas County: 9.8 %Lucas County9.8Chickasaw County: 9.7 %Chickasaw County9.7Tama County: 9.6 %Tama County9.6Clinton County: 9.1 %Clinton County9.1Washington County: 8.8 %Washington County8.8Pocahontas County: 8.7 %Pocahontas County8.7Adams County: 8.6 %Adams County8.6Wapello County: 8.6 %Wapello County8.6Sac County: 8.5 %Sac County8.5Mahaska County: 8.4 %Mahaska County8.4Woodbury County: 8.3 %Woodbury County8.3Louisa County: 8.3 %Louisa County8.3Buena Vista County: 8.2 %Buena Vista County8.2Marshall County: 8.2 %Marshall County8.2Ida County: 8 %Ida County8Decatur County: 8 %Decatur County8Cass County: 8 %Cass County8Appanoose County: 7.9 %Appanoose County7.9Clarke County: 7.7 %Clarke County7.7Sioux County: 7.5 %Sioux County7.5Humboldt County: 7.5 %Humboldt County7.5Monona County: 7.5 %Monona County7.5Jefferson County: 7.4 %Jefferson County7.4Webster County: 7.4 %Webster County7.4Clay County: 7.3 %Clay County7.3Audubon County: 7.3 %Audubon County7.3Pottawattamie County: 7.2 %Pottawattamie County7.2Floyd County: 7.1 %Floyd County7.1Wright County: 7.1 %Wright County7.1Clayton County: 6.9 %Clayton County6.9Fayette County: 6.8 %Fayette County6.8Wayne County: 6.8 %Wayne County6.8Davis County: 25.3 %Davis County25.3Van Buren County: 14.3 %Van Buren County14.3Crawford County: 13.8 %Crawford County13.8Franklin County: 12.8 %Franklin County12.8Ringgold County: 12.5 %Ringgold County12.5Union County: 10.9 %Union County10.9Howard County: 10.8 %Howard County10.8Cherokee County: 10.4 %Cherokee County10.4Lucas County: 9.8 %Lucas County9.8Chickasaw County: 9.7 %Chickasaw County9.7Tama County: 9.6 %Tama County9.6Clinton County: 9.1 %Clinton County9.1Washington County: 8.8 %Washington County8.8Pocahontas County: 8.7 %Pocahontas County8.7Adams County: 8.6 %Adams County8.6Wapello County: 8.6 %Wapello County8.6Sac County: 8.5 %Sac County8.5Mahaska County: 8.4 %Mahaska County8.4Woodbury County: 8.3 %Woodbury County8.3Louisa County: 8.3 %Louisa County8.3Buena Vista County: 8.2 %Buena Vista County8.2Marshall County: 8.2 %Marshall County8.2Ida County: 8 %Ida County8Decatur County: 8 %Decatur County8Cass County: 8 %Cass County8Appanoose County: 7.9 %Appanoose County7.9Clarke County: 7.7 %Clarke County7.7Sioux County: 7.5 %Sioux County7.5Humboldt County: 7.5 %Humboldt County7.5Monona County: 7.5 %Monona County7.5Jefferson County: 7.4 %Jefferson County7.4Webster County: 7.4 %Webster County7.4Clay County: 7.3 %Clay County7.3Audubon County: 7.3 %Audubon County7.3Pottawattamie County: 7.2 %Pottawattamie County7.2Floyd County: 7.1 %Floyd County7.1Wright County: 7.1 %Wright County7.1Clayton County: 6.9 %Clayton County6.9Fayette County: 6.8 %Fayette County6.8Wayne County: 6.8 %Wayne County6.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Davis County25.3
2Van Buren County14.3
3Crawford County13.8
4Franklin County12.8
5Ringgold County12.5
6Union County10.9
7Howard County10.8
8Cherokee County10.4
9Lucas County9.8
10Chickasaw County9.7
11Tama County9.6
12Clinton County9.1
13Washington County8.8
14Pocahontas County8.7
15Adams County8.6
16Wapello County8.6
17Sac County8.5
18Mahaska County8.4
19Woodbury County8.3
20Louisa County8.3
21Buena Vista County8.2
21Marshall County8.2
23Ida County8
24Decatur County8
25Cass County8
26Appanoose County7.9
27Clarke County7.7
28Sioux County7.5
29Humboldt County7.5
30Monona County7.5
31Jefferson County7.4
32Webster County7.4
33Clay County7.3
34Audubon County7.3
35Pottawattamie County7.2
36Floyd County7.1
36Wright County7.1
38Clayton County6.9
39Fayette County6.8
39Wayne County6.8
41Dickinson County6.6
42Lee County6.5
43Allamakee County6.4
43Scott County6.4
45Lyon County6.3
46Page County6.2
47Plymouth County6.2
48Mitchell County6.1
49Worth County6.1
50Muscatine County6.1
51Kossuth County6.1
52Taylor County6
53Osceola County6
54Jackson County5.9
55Polk County5.8
56Marion County5.8
57Poweshiek County5.7
58Black Hawk County5.7
59Palo Alto County5.5
60Hardin County5.5
61Fremont County5.4
61Story County5.4
63Johnson County5.4
64Hamilton County5.3
65Mills County5.3
66Keokuk County5.2
67Des Moines County5.1
67Shelby County5.1
69Harrison County5.1
70Guthrie County5
71Emmet County4.9
72Calhoun County4.8
73Grundy County4.8
74Hancock County4.8
75Buchanan County4.7
76Jasper County4.7
77Dallas County4.6
78Cerro Gordo County4.6
79Dubuque County4.5
80Butler County4.5
81Greene County4.4
82Boone County4.4
83Monroe County4.4
84Linn County4.3
85O'Brien County4.2
86Henry County4.1
87Bremer County4
88Benton County4
89Madison County3.7
90Adair County3.6
91Carroll County3.5
92Montgomery County3.3
93Cedar County3.1
94Jones County3.1
95Winneshiek County3
96Delaware County3
97Winnebago County3
98Warren County2.7
99Iowa County2.5

Other periods

About this ranking

People aged 35 to 64 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 35 to 64. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Coverage is what people reported at the interview, so the five-year figure averages five years of answers. People whose only coverage is the Indian Health Service count as uninsured. Active-duty military and people living in institutions are outside the universe. For single-year model-based county figures under 65, see uninsured_rate_under_65, uninsured_rate_18_64 and uninsured_rate_under_19 (SAHIE), a different source.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs (Counties in Iowa by uninsured rate, ages 35 to 64 (US, ACS), 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs, Counties in Iowa by uninsured rate, ages 35 to 64 (US, ACS), 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/iowa-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. Counties in Iowa by uninsured rate, ages 35 to 64 (US, ACS), 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/iowa-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs, Counties in Iowa by uninsured rate, ages 35 to 64 (US, ACS), 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-35-64/iowa-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_iowa_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs: Counties in Iowa by uninsured rate, ages 35 to 64 (US, ACS), 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/iowa-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs: Counties in Iowa by uninsured rate, ages 35 to 64 (US, ACS), 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-ages-35-64/iowa-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/iowa-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, ages 35 to 64 (US, ACS)?

Davis County, with 25.3% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 35 to 64 (US, ACS)?

Iowa County, with 2.5% in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, ages 35 to 64 (US, ACS): other rankings

Counties in Iowa: more rankings