Data / Rankings / Uninsured rate, under 65 (US model-based estimate) / Counties in Iowa

Counties in Iowa by uninsured rate, under 65 (US model-based estimate)

Davis County had the highest uninsured rate, under 65 (US model-based estimate) of 99 counties in 2021, at 12.5%. Warren County had the lowest, at 3.8%. The median was 5.9% and the figure for Iowa was 5.8%. Source: the U.S. Census Bureau.

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Highest12.5Davis County
Lowest3.8Warren County
Median5.999 counties
Iowa5.8History

Map of counties, 2021

Adair County: 5.6 %Adams County: 6.2 %Allamakee County: 7.6 %Appanoose County: 6.1 %Audubon County: 7 %Benton County: 5 %Black Hawk County: 6.3 %Boone County: 4.9 %Bremer County: 3.8 %Buchanan County: 5.3 %Buena Vista County: 11.5 %Butler County: 5.8 %Calhoun County: 5.7 %Carroll County: 5 %Cass County: 7.2 %Cedar County: 4.4 %Cerro Gordo County: 5.2 %Cherokee County: 5.9 %Chickasaw County: 6.3 %Clarke County: 7.4 %Clay County: 5.8 %Clayton County: 7.4 %Clinton County: 5.5 %Crawford County: 11.5 %Dallas County: 4.3 %Davis County: 12.5 %Decatur County: 7.7 %Delaware County: 5.5 %Des Moines County: 5.2 %Dickinson County: 5.5 %Dubuque County: 4.8 %Emmet County: 7.3 %Fayette County: 5.9 %Floyd County: 6.1 %Franklin County: 8.4 %Fremont County: 5.6 %Greene County: 5.9 %Grundy County: 4.6 %Guthrie County: 6.4 %Hamilton County: 5.9 %Hancock County: 5.7 %Hardin County: 6.5 %Harrison County: 5.6 %Henry County: 5.5 %Howard County: 6.1 %Humboldt County: 6 %Ida County: 6.4 %Iowa County: 4.6 %Jackson County: 5.4 %Jasper County: 4.9 %Jefferson County: 8.4 %Johnson County: 5.5 %Jones County: 5.6 %Keokuk County: 6 %Kossuth County: 5.7 %Lee County: 5 %Linn County: 4.7 %Louisa County: 8.8 %Lucas County: 6 %Lyon County: 6.3 %Madison County: 5 %Mahaska County: 5.6 %Marion County: 4.2 %Marshall County: 9.2 %Mills County: 4.9 %Mitchell County: 6.6 %Monona County: 5.8 %Monroe County: 5.9 %Montgomery County: 6 %Muscatine County: 5.9 %O'Brien County: 5.9 %Osceola County: 7 %Page County: 5.5 %Palo Alto County: 5.3 %Plymouth County: 5.8 %Pocahontas County: 8.3 %Polk County: 5.4 %Pottawattamie County: 6.5 %Poweshiek County: 5.2 %Ringgold County: 6.4 %Sac County: 6.3 %Scott County: 5.2 %Shelby County: 6.1 %Sioux County: 6.6 %Story County: 5.4 %Tama County: 8.1 %Taylor County: 8.1 %Union County: 6.4 %Van Buren County: 8.5 %Wapello County: 7.4 %Warren County: 3.8 %Washington County: 7.7 %Wayne County: 7.8 %Webster County: 5.9 %Winnebago County: 5.8 %Winneshiek County: 3.9 %Woodbury County: 8.8 %Worth County: 6 %Wright County: 6.2 %
  • Under 5.1
  • 5.1 to 5.6
  • 5.6 to 5.9
  • 5.9 to 6.3
  • 6.3 to 7.4
  • 7.4 and over
%, 2021. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Davis County: 12.5 %Davis County12.5Buena Vista County: 11.5 %Buena Vista County11.5Crawford County: 11.5 %Crawford County11.5Marshall County: 9.2 %Marshall County9.2Louisa County: 8.8 %Louisa County8.8Woodbury County: 8.8 %Woodbury County8.8Van Buren County: 8.5 %Van Buren County8.5Franklin County: 8.4 %Franklin County8.4Jefferson County: 8.4 %Jefferson County8.4Pocahontas County: 8.3 %Pocahontas County8.3Tama County: 8.1 %Tama County8.1Taylor County: 8.1 %Taylor County8.1Wayne County: 7.8 %Wayne County7.8Decatur County: 7.7 %Decatur County7.7Washington County: 7.7 %Washington County7.7Allamakee County: 7.6 %Allamakee County7.6Clarke County: 7.4 %Clarke County7.4Clayton County: 7.4 %Clayton County7.4Wapello County: 7.4 %Wapello County7.4Emmet County: 7.3 %Emmet County7.3Cass County: 7.2 %Cass County7.2Audubon County: 7 %Audubon County7Osceola County: 7 %Osceola County7Mitchell County: 6.6 %Mitchell County6.6Sioux County: 6.6 %Sioux County6.6Hardin County: 6.5 %Hardin County6.5Pottawattamie County: 6.5 %Pottawattamie County6.5Guthrie County: 6.4 %Guthrie County6.4Ida County: 6.4 %Ida County6.4Ringgold County: 6.4 %Ringgold County6.4Union County: 6.4 %Union County6.4Black Hawk County: 6.3 %Black Hawk County6.3Chickasaw County: 6.3 %Chickasaw County6.3Lyon County: 6.3 %Lyon County6.3Sac County: 6.3 %Sac County6.3Adams County: 6.2 %Adams County6.2Wright County: 6.2 %Wright County6.2Appanoose County: 6.1 %Appanoose County6.1Floyd County: 6.1 %Floyd County6.1Howard County: 6.1 %Howard County6.1Davis County: 12.5 %Davis County12.5Buena Vista County: 11.5 %Buena Vista County11.5Crawford County: 11.5 %Crawford County11.5Marshall County: 9.2 %Marshall County9.2Louisa County: 8.8 %Louisa County8.8Woodbury County: 8.8 %Woodbury County8.8Van Buren County: 8.5 %Van Buren County8.5Franklin County: 8.4 %Franklin County8.4Jefferson County: 8.4 %Jefferson County8.4Pocahontas County: 8.3 %Pocahontas County8.3Tama County: 8.1 %Tama County8.1Taylor County: 8.1 %Taylor County8.1Wayne County: 7.8 %Wayne County7.8Decatur County: 7.7 %Decatur County7.7Washington County: 7.7 %Washington County7.7Allamakee County: 7.6 %Allamakee County7.6Clarke County: 7.4 %Clarke County7.4Clayton County: 7.4 %Clayton County7.4Wapello County: 7.4 %Wapello County7.4Emmet County: 7.3 %Emmet County7.3Cass County: 7.2 %Cass County7.2Audubon County: 7 %Audubon County7Osceola County: 7 %Osceola County7Mitchell County: 6.6 %Mitchell County6.6Sioux County: 6.6 %Sioux County6.6Hardin County: 6.5 %Hardin County6.5Pottawattamie County: 6.5 %Pottawattamie County6.5Guthrie County: 6.4 %Guthrie County6.4Ida County: 6.4 %Ida County6.4Ringgold County: 6.4 %Ringgold County6.4Union County: 6.4 %Union County6.4Black Hawk County: 6.3 %Black Hawk County6.3Chickasaw County: 6.3 %Chickasaw County6.3Lyon County: 6.3 %Lyon County6.3Sac County: 6.3 %Sac County6.3Adams County: 6.2 %Adams County6.2Wright County: 6.2 %Wright County6.2Appanoose County: 6.1 %Appanoose County6.1Floyd County: 6.1 %Floyd County6.1Howard County: 6.1 %Howard County6.1
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)Change on 2020
1Davis County12.5+2.3 pts
2Buena Vista County11.5+0.4 pts
2Crawford County11.5+0.7 pts
4Marshall County9.2+0.4 pts
5Louisa County8.8+0.3 pts
5Woodbury County8.8+1 pts
7Van Buren County8.5+1 pts
8Franklin County8.4+0.3 pts
8Jefferson County8.4+0.7 pts
10Pocahontas County8.3+1.1 pts
11Tama County8.1-0.2 pts
11Taylor County8.1+0.4 pts
13Wayne County7.8+0.8 pts
14Decatur County7.7+0.9 pts
14Washington County7.7+0.1 pts
16Allamakee County7.6-0.2 pts
17Clarke County7.4-0.1 pts
17Clayton County7.4+0.7 pts
17Wapello County7.4-0.1 pts
20Emmet County7.3-0.3 pts
21Cass County7.2-0.3 pts
22Audubon County70 pts
22Osceola County7-0.2 pts
24Mitchell County6.6-0.3 pts
24Sioux County6.60 pts
26Hardin County6.50 pts
26Pottawattamie County6.5+1.1 pts
28Guthrie County6.4+0.2 pts
28Ida County6.4+0.3 pts
28Ringgold County6.4-0.3 pts
28Union County6.4+0.2 pts
32Black Hawk County6.3+0.4 pts
32Chickasaw County6.3+0.4 pts
32Lyon County6.30 pts
32Sac County6.3+0.4 pts
36Adams County6.2+0.2 pts
36Wright County6.2-0.5 pts
38Appanoose County6.10 pts
38Floyd County6.10 pts
38Howard County6.1+0.1 pts
38Shelby County6.1+0.4 pts
42Humboldt County6-0.6 pts
42Keokuk County6+0.3 pts
42Lucas County6+0.5 pts
42Montgomery County6-0.3 pts
42Worth County6-0.2 pts
47Cherokee County5.9+0.4 pts
47Fayette County5.9+0.3 pts
47Greene County5.9+0.3 pts
47Hamilton County5.9+0.1 pts
47Monroe County5.9-0.3 pts
47Muscatine County5.9-0.1 pts
47O'Brien County5.9+0.1 pts
47Webster County5.9-0.1 pts
55Butler County5.8+0.3 pts
55Clay County5.8-1.1 pts
55Monona County5.80 pts
55Plymouth County5.80 pts
55Winnebago County5.8+0.6 pts
60Calhoun County5.70 pts
60Hancock County5.7+0.2 pts
60Kossuth County5.7+0.3 pts
63Adair County5.6-0.1 pts
63Fremont County5.6-0.5 pts
63Harrison County5.6-0.3 pts
63Jones County5.6-0.2 pts
63Mahaska County5.6+0.1 pts
68Clinton County5.5-0.1 pts
68Delaware County5.5+0.7 pts
68Dickinson County5.5+0.3 pts
68Henry County5.50 pts
68Johnson County5.5-0.4 pts
68Page County5.5-0.4 pts
74Jackson County5.4-0.2 pts
74Polk County5.4-0.2 pts
74Story County5.4-0.2 pts
77Buchanan County5.30 pts
77Palo Alto County5.3-0.6 pts
79Cerro Gordo County5.2-0.1 pts
79Des Moines County5.2+0.5 pts
79Poweshiek County5.2+0.1 pts
79Scott County5.2-0.4 pts
83Benton County5+0.1 pts
83Carroll County5+0.1 pts
83Lee County5+0.1 pts
83Madison County5-0.9 pts
87Boone County4.9-0.1 pts
87Jasper County4.9+0.5 pts
87Mills County4.9+0.1 pts
90Dubuque County4.8+0.1 pts
91Linn County4.7-0.3 pts
92Grundy County4.6-0.5 pts
92Iowa County4.6+0.3 pts
94Cedar County4.4-0.3 pts
95Dallas County4.3+0.2 pts
96Marion County4.2+0.1 pts
97Winneshiek County3.9-0.4 pts
98Bremer County3.8+0.2 pts
98Warren County3.8-0.4 pts

Other periods

About this ranking

People under 65 without health insurance coverage of any kind, as a percentage of all people under 65. United States: Census Bureau Small Area Health Insurance Estimates (SAHIE) for states and counties, all races, both sexes and all income levels.

A model-based single-year estimate that combines the American Community Survey with administrative records and population estimates, so every county gets a figure. Covers states and counties only, because the SAHIE dataset files have no national row. The Census Bureau advises comparing years from 2008 on only; 2013 is the updated release. People 65 and over are left out because nearly all of them have Medicare.

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. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. 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). Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties (Counties in Iowa by uninsured rate, under 65 (US model-based estimate), 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in Iowa by uninsured rate, under 65 (US model-based estimate), 2021. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Counties in Iowa by uninsured rate, under 65 (US model-based estimate), 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2021.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in Iowa by uninsured rate, under 65 (US model-based estimate), 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_iowa_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in Iowa by uninsured rate, under 65 (US model-based estimate), 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2021. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in Iowa by uninsured rate, under 65 (US model-based estimate), 2021
PY  - 2026
DA  - 2026/08/06
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, under 65 (US model-based estimate)?

Davis County, with 12.5% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 65 (US model-based estimate)?

Warren County, with 3.8% 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, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, under 65 (US model-based estimate): other rankings

Counties in Iowa: more rankings