Data / Rankings / Uninsured rate, ages 18 to 64 (US model-based estimate) / Counties in South Dakota

Counties in South Dakota by uninsured rate, ages 18 to 64 (US model-based estimate), 2024

Mellette County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 66 counties in 2024, at 17.5%. Potter County had the lowest, at 6.8%. The median was 11.1% and the figure for South Dakota was 10.8%. Source: the U.S. Census Bureau.

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Highest17.5Mellette County
Lowest6.8Potter County
Median11.166 counties
South Dakota10.8History

Map of counties, 2024

Aurora County: 14 %Beadle County: 16.3 %Bennett County: 16.6 %Bon Homme County: 9.2 %Brookings County: 9 %Brown County: 10.4 %Brule County: 13.8 %Buffalo County: 13.8 %Butte County: 16.8 %Campbell County: 8.7 %Charles Mix County: 16.2 %Clark County: 14.8 %Clay County: 12.3 %Codington County: 10.4 %Corson County: 13 %Custer County: 10.1 %Davison County: 10.5 %Day County: 12 %Deuel County: 9.5 %Dewey County: 16.1 %Douglas County: 10.7 %Edmunds County: 8.9 %Fall River County: 12.4 %Faulk County: 10.6 %Grant County: 11.9 %Gregory County: 14.5 %Haakon County: 11.4 %Hamlin County: 11.2 %Hand County: 7 %Hanson County: 9.1 %Harding County: 9.6 %Hughes County: 7.7 %Hutchinson County: 9.3 %Hyde County: 10.9 %Jackson County: 16 %Jerauld County: 8.8 %Jones County: 8.4 %Kingsbury County: 11.4 %Lake County: 10.3 %Lawrence County: 10.4 %Lincoln County: 7.6 %Lyman County: 15.5 %McCook County: 9.7 %McPherson County: 13 %Marshall County: 12.2 %Meade County: 10.9 %Mellette County: 17.5 %Miner County: 8.9 %Minnehaha County: 10.5 %Moody County: 11.4 %Oglala Lakota County: 13.4 %Pennington County: 11.4 %Perkins County: 15.7 %Potter County: 6.8 %Roberts County: 14.4 %Sanborn County: 14.5 %Spink County: 11.1 %Stanley County: 8.5 %Sully County: 9.1 %Todd County: 14 %Tripp County: 16.4 %Turner County: 11.3 %Union County: 8.2 %Walworth County: 10.9 %Yankton County: 10.4 %Ziebach County: 11.4 %
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%, 2024. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2024

Mellette County: 17.5 %Mellette County17.5Butte County: 16.8 %Butte County16.8Bennett County: 16.6 %Bennett County16.6Tripp County: 16.4 %Tripp County16.4Beadle County: 16.3 %Beadle County16.3Charles Mix County: 16.2 %Charles Mix County16.2Dewey County: 16.1 %Dewey County16.1Jackson County: 16 %Jackson County16Perkins County: 15.7 %Perkins County15.7Lyman County: 15.5 %Lyman County15.5Clark County: 14.8 %Clark County14.8Gregory County: 14.5 %Gregory County14.5Sanborn County: 14.5 %Sanborn County14.5Roberts County: 14.4 %Roberts County14.4Aurora County: 14 %Aurora County14Todd County: 14 %Todd County14Brule County: 13.8 %Brule County13.8Buffalo County: 13.8 %Buffalo County13.8Oglala Lakota County: 13.4 %Oglala Lakota County13.4Corson County: 13 %Corson County13McPherson County: 13 %McPherson County13Fall River County: 12.4 %Fall River County12.4Clay County: 12.3 %Clay County12.3Marshall County: 12.2 %Marshall County12.2Day County: 12 %Day County12Grant County: 11.9 %Grant County11.9Haakon County: 11.4 %Haakon County11.4Kingsbury County: 11.4 %Kingsbury County11.4Moody County: 11.4 %Moody County11.4Pennington County: 11.4 %Pennington County11.4Ziebach County: 11.4 %Ziebach County11.4Turner County: 11.3 %Turner County11.3Hamlin County: 11.2 %Hamlin County11.2Spink County: 11.1 %Spink County11.1Hyde County: 10.9 %Hyde County10.9Meade County: 10.9 %Meade County10.9Walworth County: 10.9 %Walworth County10.9Douglas County: 10.7 %Douglas County10.7Faulk County: 10.6 %Faulk County10.6Davison County: 10.5 %Davison County10.5Mellette County: 17.5 %Mellette County17.5Butte County: 16.8 %Butte County16.8Bennett County: 16.6 %Bennett County16.6Tripp County: 16.4 %Tripp County16.4Beadle County: 16.3 %Beadle County16.3Charles Mix County: 16.2 %Charles Mix County16.2Dewey County: 16.1 %Dewey County16.1Jackson County: 16 %Jackson County16Perkins County: 15.7 %Perkins County15.7Lyman County: 15.5 %Lyman County15.5Clark County: 14.8 %Clark County14.8Gregory County: 14.5 %Gregory County14.5Sanborn County: 14.5 %Sanborn County14.5Roberts County: 14.4 %Roberts County14.4Aurora County: 14 %Aurora County14Todd County: 14 %Todd County14Brule County: 13.8 %Brule County13.8Buffalo County: 13.8 %Buffalo County13.8Oglala Lakota County: 13.4 %Oglala Lakota County13.4Corson County: 13 %Corson County13McPherson County: 13 %McPherson County13Fall River County: 12.4 %Fall River County12.4Clay County: 12.3 %Clay County12.3Marshall County: 12.2 %Marshall County12.2Day County: 12 %Day County12Grant County: 11.9 %Grant County11.9Haakon County: 11.4 %Haakon County11.4Kingsbury County: 11.4 %Kingsbury County11.4Moody County: 11.4 %Moody County11.4Pennington County: 11.4 %Pennington County11.4Ziebach County: 11.4 %Ziebach County11.4Turner County: 11.3 %Turner County11.3Hamlin County: 11.2 %Hamlin County11.2Spink County: 11.1 %Spink County11.1Hyde County: 10.9 %Hyde County10.9Meade County: 10.9 %Meade County10.9Walworth County: 10.9 %Walworth County10.9Douglas County: 10.7 %Douglas County10.7Faulk County: 10.6 %Faulk County10.6Davison County: 10.5 %Davison County10.5
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Mellette County17.5-2.6 pts
2Butte County16.8+0.3 pts
3Bennett County16.6-0.3 pts
4Tripp County16.4-1.1 pts
5Beadle County16.3+0.6 pts
6Charles Mix County16.2+0.4 pts
7Dewey County16.1-1.8 pts
8Jackson County16-3.2 pts
9Perkins County15.7+1.8 pts
10Lyman County15.5-0.3 pts
11Clark County14.8+1.8 pts
12Gregory County14.5-2 pts
12Sanborn County14.5+1.6 pts
14Roberts County14.4-0.7 pts
15Aurora County14+0.2 pts
15Todd County14-3.1 pts
17Brule County13.8-1.9 pts
17Buffalo County13.8-1.1 pts
19Oglala Lakota County13.4-1.8 pts
20Corson County13-3.3 pts
20McPherson County13+0.9 pts
22Fall River County12.4-1.3 pts
23Clay County12.3-1.4 pts
24Marshall County12.2-0.8 pts
25Day County12-1.7 pts
26Grant County11.9-0.9 pts
27Haakon County11.4-0.6 pts
27Kingsbury County11.4-0.3 pts
27Moody County11.4-0.4 pts
27Pennington County11.4-0.8 pts
27Ziebach County11.4-2.3 pts
32Turner County11.3-0.5 pts
33Hamlin County11.2-0.6 pts
34Spink County11.10 pts
35Hyde County10.9+0.6 pts
35Meade County10.9+0.2 pts
35Walworth County10.9-2.2 pts
38Douglas County10.7-1.7 pts
39Faulk County10.6-0.6 pts
40Davison County10.5-1.5 pts
40Minnehaha County10.5+0.1 pts
42Brown County10.4-0.6 pts
42Codington County10.4-0.7 pts
42Lawrence County10.4-1.4 pts
42Yankton County10.4+0.1 pts
46Lake County10.3+0.4 pts
47Custer County10.1-1.8 pts
48McCook County9.7-0.7 pts
49Harding County9.6-2.7 pts
50Deuel County9.5-0.8 pts
51Hutchinson County9.3-0.5 pts
52Bon Homme County9.2-1.1 pts
53Hanson County9.1-0.9 pts
53Sully County9.1-0.9 pts
55Brookings County9-0.8 pts
56Edmunds County8.9-2.8 pts
56Miner County8.9-1.6 pts
58Jerauld County8.8-1.2 pts
59Campbell County8.7-1.8 pts
60Stanley County8.5-0.6 pts
61Jones County8.4-0.3 pts
62Union County8.2+0.4 pts
63Hughes County7.7+0.1 pts
64Lincoln County7.6+0.2 pts
65Hand County7-3.4 pts
66Potter County6.8-0.1 pts

Other periods

About this ranking

People aged 18 to 64 without health insurance coverage of any kind, as a percentage of all people aged 18 to 64. 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. Working-age adults; the rate for everyone under 65 is uninsured_rate_under_65.

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, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-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, ages 18 to 64, all races, both sexes, all income levels, states and counties (Counties in South Dakota by uninsured rate, ages 18 to 64 (US model-based estimate), 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in South Dakota by uninsured rate, ages 18 to 64 (US model-based estimate), 2024. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Counties in South Dakota by uninsured rate, ages 18 to 64 (US model-based estimate), 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in South Dakota by uninsured rate, ages 18 to 64 (US model-based estimate), 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_dakota_2024,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in South Dakota by uninsured rate, ages 18 to 64 (US model-based estimate), 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in South Dakota by uninsured rate, ages 18 to 64 (US model-based estimate), 2024
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-2024-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, ages 18 to 64 (US model-based estimate)?

Mellette County, with 17.5% in 2024, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 18 to 64 (US model-based estimate)?

Potter County, with 6.8% in 2024.

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, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, ages 18 to 64 (US model-based estimate): other rankings

Counties in South Dakota: more rankings