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 2018, at 11.1%. Dallas County had the lowest, at 3.7%. The median was 5.7% and the figure for Iowa was 5.6%. Source: the U.S. Census Bureau.

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Highest11.1Davis County
Lowest3.7Dallas County
Median5.799 counties
Iowa5.6History

Map of counties, 2018

Adair County: 5.2 %Adams County: 6.6 %Allamakee County: 9.2 %Appanoose County: 6.1 %Audubon County: 6.9 %Benton County: 4.6 %Black Hawk County: 5.5 %Boone County: 4.5 %Bremer County: 3.7 %Buchanan County: 5.3 %Buena Vista County: 10.2 %Butler County: 5.3 %Calhoun County: 5.7 %Carroll County: 4.6 %Cass County: 7 %Cedar County: 4.5 %Cerro Gordo County: 4.8 %Cherokee County: 6 %Chickasaw County: 6.6 %Clarke County: 6.4 %Clay County: 5.3 %Clayton County: 6.4 %Clinton County: 5.2 %Crawford County: 11 %Dallas County: 3.7 %Davis County: 11.1 %Decatur County: 7.7 %Delaware County: 5.7 %Des Moines County: 4.9 %Dickinson County: 4.9 %Dubuque County: 4.5 %Emmet County: 7.1 %Fayette County: 6.2 %Floyd County: 6.8 %Franklin County: 7.4 %Fremont County: 4.9 %Greene County: 5.5 %Grundy County: 3.9 %Guthrie County: 5.9 %Hamilton County: 5.5 %Hancock County: 5.2 %Hardin County: 5.6 %Harrison County: 5.3 %Henry County: 5.5 %Howard County: 6.5 %Humboldt County: 6.4 %Ida County: 5 %Iowa County: 4.3 %Jackson County: 5.6 %Jasper County: 4.3 %Jefferson County: 7.8 %Johnson County: 5.7 %Jones County: 5.4 %Keokuk County: 6.3 %Kossuth County: 5.2 %Lee County: 4.9 %Linn County: 4.3 %Louisa County: 9.3 %Lucas County: 5.2 %Lyon County: 6.5 %Madison County: 4.7 %Mahaska County: 5.3 %Marion County: 4.1 %Marshall County: 7.6 %Mills County: 4.9 %Mitchell County: 7.1 %Monona County: 6.2 %Monroe County: 5.9 %Montgomery County: 6 %Muscatine County: 5.6 %O'Brien County: 5.7 %Osceola County: 7.2 %Page County: 6 %Palo Alto County: 4.9 %Plymouth County: 5 %Pocahontas County: 7 %Polk County: 5.8 %Pottawattamie County: 6.1 %Poweshiek County: 5.4 %Ringgold County: 6.9 %Sac County: 5.9 %Scott County: 5.2 %Shelby County: 6.1 %Sioux County: 6.6 %Story County: 5.6 %Tama County: 7.9 %Taylor County: 7.1 %Union County: 6.1 %Van Buren County: 8.7 %Wapello County: 7.3 %Warren County: 3.8 %Washington County: 6.7 %Wayne County: 7.4 %Webster County: 5.4 %Winnebago County: 5.2 %Winneshiek County: 4.4 %Woodbury County: 8.1 %Worth County: 5.6 %Wright County: 7.2 %
  • Under 4.9
  • 4.9 to 5.3
  • 5.3 to 5.7
  • 5.7 to 6.3
  • 6.3 to 7.1
  • 7.1 and over
%, 2018. 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, 2018

Davis County: 11.1 %Davis County11.1Crawford County: 11 %Crawford County11Buena Vista County: 10.2 %Buena Vista County10.2Louisa County: 9.3 %Louisa County9.3Allamakee County: 9.2 %Allamakee County9.2Van Buren County: 8.7 %Van Buren County8.7Woodbury County: 8.1 %Woodbury County8.1Tama County: 7.9 %Tama County7.9Jefferson County: 7.8 %Jefferson County7.8Decatur County: 7.7 %Decatur County7.7Marshall County: 7.6 %Marshall County7.6Franklin County: 7.4 %Franklin County7.4Wayne County: 7.4 %Wayne County7.4Wapello County: 7.3 %Wapello County7.3Osceola County: 7.2 %Osceola County7.2Wright County: 7.2 %Wright County7.2Emmet County: 7.1 %Emmet County7.1Mitchell County: 7.1 %Mitchell County7.1Taylor County: 7.1 %Taylor County7.1Cass County: 7 %Cass County7Pocahontas County: 7 %Pocahontas County7Audubon County: 6.9 %Audubon County6.9Ringgold County: 6.9 %Ringgold County6.9Floyd County: 6.8 %Floyd County6.8Washington County: 6.7 %Washington County6.7Adams County: 6.6 %Adams County6.6Chickasaw County: 6.6 %Chickasaw County6.6Sioux County: 6.6 %Sioux County6.6Howard County: 6.5 %Howard County6.5Lyon County: 6.5 %Lyon County6.5Clarke County: 6.4 %Clarke County6.4Clayton County: 6.4 %Clayton County6.4Humboldt County: 6.4 %Humboldt County6.4Keokuk County: 6.3 %Keokuk County6.3Fayette County: 6.2 %Fayette County6.2Monona County: 6.2 %Monona County6.2Appanoose County: 6.1 %Appanoose County6.1Pottawattamie County: 6.1 %Pottawattamie County6.1Shelby County: 6.1 %Shelby County6.1Union County: 6.1 %Union County6.1Davis County: 11.1 %Davis County11.1Crawford County: 11 %Crawford County11Buena Vista County: 10.2 %Buena Vista County10.2Louisa County: 9.3 %Louisa County9.3Allamakee County: 9.2 %Allamakee County9.2Van Buren County: 8.7 %Van Buren County8.7Woodbury County: 8.1 %Woodbury County8.1Tama County: 7.9 %Tama County7.9Jefferson County: 7.8 %Jefferson County7.8Decatur County: 7.7 %Decatur County7.7Marshall County: 7.6 %Marshall County7.6Franklin County: 7.4 %Franklin County7.4Wayne County: 7.4 %Wayne County7.4Wapello County: 7.3 %Wapello County7.3Osceola County: 7.2 %Osceola County7.2Wright County: 7.2 %Wright County7.2Emmet County: 7.1 %Emmet County7.1Mitchell County: 7.1 %Mitchell County7.1Taylor County: 7.1 %Taylor County7.1Cass County: 7 %Cass County7Pocahontas County: 7 %Pocahontas County7Audubon County: 6.9 %Audubon County6.9Ringgold County: 6.9 %Ringgold County6.9Floyd County: 6.8 %Floyd County6.8Washington County: 6.7 %Washington County6.7Adams County: 6.6 %Adams County6.6Chickasaw County: 6.6 %Chickasaw County6.6Sioux County: 6.6 %Sioux County6.6Howard County: 6.5 %Howard County6.5Lyon County: 6.5 %Lyon County6.5Clarke County: 6.4 %Clarke County6.4Clayton County: 6.4 %Clayton County6.4Humboldt County: 6.4 %Humboldt County6.4Keokuk County: 6.3 %Keokuk County6.3Fayette County: 6.2 %Fayette County6.2Monona County: 6.2 %Monona County6.2Appanoose County: 6.1 %Appanoose County6.1Pottawattamie County: 6.1 %Pottawattamie County6.1Shelby County: 6.1 %Shelby County6.1Union County: 6.1 %Union 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

RankCounties2018 (%)Change on 2017
1Davis County11.1-0.2 pts
2Crawford County11+0.6 pts
3Buena Vista County10.2-1.1 pts
4Louisa County9.3+0.4 pts
5Allamakee County9.2+1.3 pts
6Van Buren County8.7+0.8 pts
7Woodbury County8.10 pts
8Tama County7.9+0.2 pts
9Jefferson County7.8+0.3 pts
10Decatur County7.7+0.5 pts
11Marshall County7.6-0.5 pts
12Franklin County7.4-0.2 pts
12Wayne County7.40 pts
14Wapello County7.3+0.5 pts
15Osceola County7.2-0.4 pts
15Wright County7.2+0.2 pts
17Emmet County7.1+0.3 pts
17Mitchell County7.1+0.1 pts
17Taylor County7.1+0.2 pts
20Cass County7+0.2 pts
20Pocahontas County7+1.1 pts
22Audubon County6.9+0.2 pts
22Ringgold County6.9-0.7 pts
24Floyd County6.8+0.3 pts
25Washington County6.7+0.8 pts
26Adams County6.6+0.4 pts
26Chickasaw County6.6+0.2 pts
26Sioux County6.6-0.1 pts
29Howard County6.5+0.2 pts
29Lyon County6.5+0.2 pts
31Clarke County6.40 pts
31Clayton County6.4+0.2 pts
31Humboldt County6.4+1 pts
34Keokuk County6.3-0.3 pts
35Fayette County6.2+0.8 pts
35Monona County6.2-0.3 pts
37Appanoose County6.1-0.2 pts
37Pottawattamie County6.1+0.5 pts
37Shelby County6.1+0.9 pts
37Union County6.1+0.1 pts
41Cherokee County60 pts
41Montgomery County6-0.6 pts
41Page County6-0.2 pts
44Guthrie County5.9-0.2 pts
44Monroe County5.9+0.1 pts
44Sac County5.9-0.1 pts
47Polk County5.8+0.3 pts
48Calhoun County5.7+0.1 pts
48Delaware County5.7-0.5 pts
48Johnson County5.7+0.2 pts
48O'Brien County5.7+0.1 pts
52Hardin County5.6+0.3 pts
52Jackson County5.6+0.2 pts
52Muscatine County5.6+0.4 pts
52Story County5.6+0.3 pts
52Worth County5.6-0.1 pts
57Black Hawk County5.5+0.2 pts
57Greene County5.5+0.4 pts
57Hamilton County5.5-0.2 pts
57Henry County5.50 pts
61Jones County5.4+0.3 pts
61Poweshiek County5.4-0.1 pts
61Webster County5.4-0.5 pts
64Buchanan County5.30 pts
64Butler County5.3+0.1 pts
64Clay County5.3-0.3 pts
64Harrison County5.3-0.1 pts
64Mahaska County5.3+0.2 pts
69Adair County5.2-0.3 pts
69Clinton County5.2+0.3 pts
69Hancock County5.2-0.3 pts
69Kossuth County5.2+0.2 pts
69Lucas County5.2-0.4 pts
69Scott County5.2+0.2 pts
69Winnebago County5.2+0.1 pts
76Ida County5+0.2 pts
76Plymouth County5-0.2 pts
78Des Moines County4.9-0.4 pts
78Dickinson County4.9+0.1 pts
78Fremont County4.90 pts
78Lee County4.9-0.2 pts
78Mills County4.9+0.5 pts
78Palo Alto County4.9+0.2 pts
84Cerro Gordo County4.8+0.2 pts
85Madison County4.7-0.1 pts
86Benton County4.6-0.4 pts
86Carroll County4.6+0.2 pts
88Boone County4.5+0.3 pts
88Cedar County4.5+0.2 pts
88Dubuque County4.5+0.2 pts
91Winneshiek County4.4-0.3 pts
92Iowa County4.3-0.1 pts
92Jasper County4.3+0.1 pts
92Linn County4.3+0.1 pts
95Marion County4.1-0.1 pts
96Grundy County3.9+0.2 pts
97Warren County3.8-0.1 pts
98Bremer County3.7-0.2 pts
98Dallas County3.7-0.2 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-2018-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), 2018) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-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), 2018. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2018. 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), 2018. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2018.

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), 2018 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_iowa_by_2018,
  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), 2018}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2018. 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-2018-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), 2018
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-2018-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/iowa-counties?period=2018.
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-2018-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 11.1% in 2018, according to the U.S. Census Bureau.

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

Dallas County, with 3.7% in 2018.

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