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

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

Dewey County had the highest uninsured rate, under 65 (US model-based estimate) of 66 counties in 2022, at 17.6%. Sully County had the lowest, at 6.5%. The median was 10.6% and the figure for South Dakota was 10%. Source: the U.S. Census Bureau.

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Highest17.6Dewey County
Lowest6.5Sully County
Median10.666 counties
South Dakota10History

Map of counties, 2022

Aurora County: 11 %Beadle County: 12.9 %Bennett County: 14.2 %Bon Homme County: 9.1 %Brookings County: 7.7 %Brown County: 9.9 %Brule County: 13.4 %Buffalo County: 12.8 %Butte County: 14.3 %Campbell County: 10 %Charles Mix County: 15.5 %Clark County: 9.4 %Clay County: 10.1 %Codington County: 10.4 %Corson County: 10.3 %Custer County: 13 %Davison County: 11 %Day County: 12.5 %Deuel County: 9.6 %Dewey County: 17.6 %Douglas County: 12.8 %Edmunds County: 9.5 %Fall River County: 12.8 %Faulk County: 10.7 %Grant County: 10.4 %Gregory County: 15.1 %Haakon County: 10.4 %Hamlin County: 11.8 %Hand County: 10.3 %Hanson County: 8.8 %Harding County: 11.3 %Hughes County: 7.6 %Hutchinson County: 9.1 %Hyde County: 8.7 %Jackson County: 16.2 %Jerauld County: 8.8 %Jones County: 9 %Kingsbury County: 10 %Lake County: 9.5 %Lawrence County: 11.2 %Lincoln County: 6.6 %Lyman County: 14.2 %McCook County: 11 %McPherson County: 8 %Marshall County: 10.5 %Meade County: 8.6 %Mellette County: 14.4 %Miner County: 10.6 %Minnehaha County: 9.2 %Moody County: 11.8 %Oglala Lakota County: 13.7 %Pennington County: 10.8 %Perkins County: 11.7 %Potter County: 8.3 %Roberts County: 14.8 %Sanborn County: 10.8 %Spink County: 11 %Stanley County: 10.3 %Sully County: 6.5 %Todd County: 13.1 %Tripp County: 16.2 %Turner County: 9.7 %Union County: 7.4 %Walworth County: 12.3 %Yankton County: 10.1 %Ziebach County: 11.9 %
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%, 2022. 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, 2022

Dewey County: 17.6 %Dewey County17.6Jackson County: 16.2 %Jackson County16.2Tripp County: 16.2 %Tripp County16.2Charles Mix County: 15.5 %Charles Mix County15.5Gregory County: 15.1 %Gregory County15.1Roberts County: 14.8 %Roberts County14.8Mellette County: 14.4 %Mellette County14.4Butte County: 14.3 %Butte County14.3Bennett County: 14.2 %Bennett County14.2Lyman County: 14.2 %Lyman County14.2Oglala Lakota County: 13.7 %Oglala Lakota County13.7Brule County: 13.4 %Brule County13.4Todd County: 13.1 %Todd County13.1Custer County: 13 %Custer County13Beadle County: 12.9 %Beadle County12.9Buffalo County: 12.8 %Buffalo County12.8Douglas County: 12.8 %Douglas County12.8Fall River County: 12.8 %Fall River County12.8Day County: 12.5 %Day County12.5Walworth County: 12.3 %Walworth County12.3Ziebach County: 11.9 %Ziebach County11.9Hamlin County: 11.8 %Hamlin County11.8Moody County: 11.8 %Moody County11.8Perkins County: 11.7 %Perkins County11.7Harding County: 11.3 %Harding County11.3Lawrence County: 11.2 %Lawrence County11.2Aurora County: 11 %Aurora County11Davison County: 11 %Davison County11McCook County: 11 %McCook County11Spink County: 11 %Spink County11Pennington County: 10.8 %Pennington County10.8Sanborn County: 10.8 %Sanborn County10.8Faulk County: 10.7 %Faulk County10.7Miner County: 10.6 %Miner County10.6Marshall County: 10.5 %Marshall County10.5Codington County: 10.4 %Codington County10.4Grant County: 10.4 %Grant County10.4Haakon County: 10.4 %Haakon County10.4Corson County: 10.3 %Corson County10.3Hand County: 10.3 %Hand County10.3Dewey County: 17.6 %Dewey County17.6Jackson County: 16.2 %Jackson County16.2Tripp County: 16.2 %Tripp County16.2Charles Mix County: 15.5 %Charles Mix County15.5Gregory County: 15.1 %Gregory County15.1Roberts County: 14.8 %Roberts County14.8Mellette County: 14.4 %Mellette County14.4Butte County: 14.3 %Butte County14.3Bennett County: 14.2 %Bennett County14.2Lyman County: 14.2 %Lyman County14.2Oglala Lakota County: 13.7 %Oglala Lakota County13.7Brule County: 13.4 %Brule County13.4Todd County: 13.1 %Todd County13.1Custer County: 13 %Custer County13Beadle County: 12.9 %Beadle County12.9Buffalo County: 12.8 %Buffalo County12.8Douglas County: 12.8 %Douglas County12.8Fall River County: 12.8 %Fall River County12.8Day County: 12.5 %Day County12.5Walworth County: 12.3 %Walworth County12.3Ziebach County: 11.9 %Ziebach County11.9Hamlin County: 11.8 %Hamlin County11.8Moody County: 11.8 %Moody County11.8Perkins County: 11.7 %Perkins County11.7Harding County: 11.3 %Harding County11.3Lawrence County: 11.2 %Lawrence County11.2Aurora County: 11 %Aurora County11Davison County: 11 %Davison County11McCook County: 11 %McCook County11Spink County: 11 %Spink County11Pennington County: 10.8 %Pennington County10.8Sanborn County: 10.8 %Sanborn County10.8Faulk County: 10.7 %Faulk County10.7Miner County: 10.6 %Miner County10.6Marshall County: 10.5 %Marshall County10.5Codington County: 10.4 %Codington County10.4Grant County: 10.4 %Grant County10.4Haakon County: 10.4 %Haakon County10.4Corson County: 10.3 %Corson County10.3Hand County: 10.3 %Hand County10.3
%. 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

RankCounties2022 (%)Change on 2021
1Dewey County17.6-0.8 pts
2Jackson County16.2-1.6 pts
2Tripp County16.2-0.1 pts
4Charles Mix County15.5-1.6 pts
5Gregory County15.1-0.5 pts
6Roberts County14.8-2.2 pts
7Mellette County14.4-2.1 pts
8Butte County14.3+0.7 pts
9Bennett County14.2-3.5 pts
9Lyman County14.2-2.1 pts
11Oglala Lakota County13.7-3.3 pts
12Brule County13.4-0.5 pts
13Todd County13.1-2.5 pts
14Custer County13-0.8 pts
15Beadle County12.9-1.8 pts
16Buffalo County12.8-5.8 pts
16Douglas County12.8-0.9 pts
16Fall River County12.8+0.1 pts
19Day County12.5-2.5 pts
20Walworth County12.3-0.6 pts
21Ziebach County11.9-5.2 pts
22Hamlin County11.8-1.7 pts
22Moody County11.8-1.6 pts
24Perkins County11.7+0.4 pts
25Harding County11.3-1.7 pts
26Lawrence County11.2-1.2 pts
27Aurora County11-2.6 pts
27Davison County11+0.5 pts
27McCook County11-1.9 pts
27Spink County11-1.3 pts
31Pennington County10.8-1.5 pts
31Sanborn County10.8-0.8 pts
33Faulk County10.7-1.6 pts
34Miner County10.6-1.3 pts
35Marshall County10.5-1.6 pts
36Codington County10.4-0.5 pts
36Grant County10.4-2.1 pts
36Haakon County10.4-1 pts
39Corson County10.3-4.3 pts
39Hand County10.3+1.5 pts
39Stanley County10.3+0.2 pts
42Clay County10.1-3.1 pts
42Yankton County10.1-1.2 pts
44Campbell County10+0.3 pts
44Kingsbury County10-1.8 pts
46Brown County9.9-0.8 pts
47Turner County9.7-1.2 pts
48Deuel County9.6-0.7 pts
49Edmunds County9.5-0.9 pts
49Lake County9.5-1.1 pts
51Clark County9.4-2.8 pts
52Minnehaha County9.2-1.7 pts
53Bon Homme County9.1-3.2 pts
53Hutchinson County9.1-2.9 pts
55Jones County9-2.1 pts
56Hanson County8.8-3.1 pts
56Jerauld County8.8-1.4 pts
58Hyde County8.7-2.8 pts
59Meade County8.6-1.1 pts
60Potter County8.3-1.2 pts
61McPherson County8-1.9 pts
62Brookings County7.7-0.7 pts
63Hughes County7.6-1.3 pts
64Union County7.4-0.8 pts
65Lincoln County6.6-1.4 pts
66Sully County6.5-0.7 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-2022-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 South Dakota by uninsured rate, under 65 (US model-based estimate), 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-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 South Dakota by uninsured rate, under 65 (US model-based estimate), 2022. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2022. 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 South Dakota by uninsured rate, under 65 (US model-based estimate), 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2022.

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 South Dakota by uninsured rate, under 65 (US model-based estimate), 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_dakota_2022,
  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 South Dakota by uninsured rate, under 65 (US model-based estimate), 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2022. 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-2022-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 South Dakota by uninsured rate, under 65 (US model-based estimate), 2022
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-2022-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2022.
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-2022-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)?

Dewey County, with 17.6% in 2022, according to the U.S. Census Bureau.

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

Sully County, with 6.5% in 2022.

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 South Dakota: more rankings