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)

Bennett County had the highest uninsured rate, under 65 (US model-based estimate) of 66 counties in 2015, at 22.3%. Lincoln County had the lowest, at 5.8%. The median was 12.4% and the figure for South Dakota was 11.8%. Source: the U.S. Census Bureau.

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Highest22.3Bennett County
Lowest5.8Lincoln County
Median12.466 counties
South Dakota11.8History

Map of counties, 2015

Aurora County: 14.7 %Beadle County: 14.7 %Bennett County: 22.3 %Bon Homme County: 12.8 %Brookings County: 10.8 %Brown County: 10.2 %Brule County: 17.5 %Buffalo County: 20.7 %Butte County: 13.9 %Campbell County: 11.3 %Charles Mix County: 19.5 %Clark County: 13.8 %Clay County: 11.9 %Codington County: 10.2 %Corson County: 19.7 %Custer County: 12.8 %Davison County: 10.3 %Day County: 16.6 %Deuel County: 11.5 %Dewey County: 22.1 %Douglas County: 12.9 %Edmunds County: 11 %Fall River County: 12.3 %Faulk County: 9.1 %Grant County: 11.1 %Gregory County: 16.7 %Haakon County: 12.5 %Hamlin County: 11.5 %Hand County: 10.3 %Hanson County: 11.3 %Harding County: 12.7 %Hughes County: 10.9 %Hutchinson County: 11.4 %Hyde County: 12.1 %Jackson County: 22.2 %Jerauld County: 11.5 %Jones County: 17.3 %Kingsbury County: 9.1 %Lake County: 9.5 %Lawrence County: 11.8 %Lincoln County: 5.8 %Lyman County: 17.8 %McCook County: 10.2 %McPherson County: 13.1 %Marshall County: 17.1 %Meade County: 11.3 %Mellette County: 17.9 %Miner County: 9.8 %Minnehaha County: 10.5 %Moody County: 14.6 %Oglala Lakota County: 18.2 %Pennington County: 13.1 %Perkins County: 14.6 %Potter County: 12 %Roberts County: 18 %Sanborn County: 12 %Spink County: 12 %Stanley County: 11.9 %Sully County: 13.8 %Todd County: 17.5 %Tripp County: 16 %Turner County: 10.7 %Union County: 6.8 %Walworth County: 14.9 %Yankton County: 10.2 %Ziebach County: 18.2 %
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%, 2015. 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, 2015

Bennett County: 22.3 %Bennett County22.3Jackson County: 22.2 %Jackson County22.2Dewey County: 22.1 %Dewey County22.1Buffalo County: 20.7 %Buffalo County20.7Corson County: 19.7 %Corson County19.7Charles Mix County: 19.5 %Charles Mix County19.5Oglala Lakota County: 18.2 %Oglala Lakota County18.2Ziebach County: 18.2 %Ziebach County18.2Roberts County: 18 %Roberts County18Mellette County: 17.9 %Mellette County17.9Lyman County: 17.8 %Lyman County17.8Brule County: 17.5 %Brule County17.5Todd County: 17.5 %Todd County17.5Jones County: 17.3 %Jones County17.3Marshall County: 17.1 %Marshall County17.1Gregory County: 16.7 %Gregory County16.7Day County: 16.6 %Day County16.6Tripp County: 16 %Tripp County16Walworth County: 14.9 %Walworth County14.9Aurora County: 14.7 %Aurora County14.7Beadle County: 14.7 %Beadle County14.7Moody County: 14.6 %Moody County14.6Perkins County: 14.6 %Perkins County14.6Butte County: 13.9 %Butte County13.9Clark County: 13.8 %Clark County13.8Sully County: 13.8 %Sully County13.8McPherson County: 13.1 %McPherson County13.1Pennington County: 13.1 %Pennington County13.1Douglas County: 12.9 %Douglas County12.9Bon Homme County: 12.8 %Bon Homme County12.8Custer County: 12.8 %Custer County12.8Harding County: 12.7 %Harding County12.7Haakon County: 12.5 %Haakon County12.5Fall River County: 12.3 %Fall River County12.3Hyde County: 12.1 %Hyde County12.1Potter County: 12 %Potter County12Sanborn County: 12 %Sanborn County12Spink County: 12 %Spink County12Clay County: 11.9 %Clay County11.9Stanley County: 11.9 %Stanley County11.9Bennett County: 22.3 %Bennett County22.3Jackson County: 22.2 %Jackson County22.2Dewey County: 22.1 %Dewey County22.1Buffalo County: 20.7 %Buffalo County20.7Corson County: 19.7 %Corson County19.7Charles Mix County: 19.5 %Charles Mix County19.5Oglala Lakota County: 18.2 %Oglala Lakota County18.2Ziebach County: 18.2 %Ziebach County18.2Roberts County: 18 %Roberts County18Mellette County: 17.9 %Mellette County17.9Lyman County: 17.8 %Lyman County17.8Brule County: 17.5 %Brule County17.5Todd County: 17.5 %Todd County17.5Jones County: 17.3 %Jones County17.3Marshall County: 17.1 %Marshall County17.1Gregory County: 16.7 %Gregory County16.7Day County: 16.6 %Day County16.6Tripp County: 16 %Tripp County16Walworth County: 14.9 %Walworth County14.9Aurora County: 14.7 %Aurora County14.7Beadle County: 14.7 %Beadle County14.7Moody County: 14.6 %Moody County14.6Perkins County: 14.6 %Perkins County14.6Butte County: 13.9 %Butte County13.9Clark County: 13.8 %Clark County13.8Sully County: 13.8 %Sully County13.8McPherson County: 13.1 %McPherson County13.1Pennington County: 13.1 %Pennington County13.1Douglas County: 12.9 %Douglas County12.9Bon Homme County: 12.8 %Bon Homme County12.8Custer County: 12.8 %Custer County12.8Harding County: 12.7 %Harding County12.7Haakon County: 12.5 %Haakon County12.5Fall River County: 12.3 %Fall River County12.3Hyde County: 12.1 %Hyde County12.1Potter County: 12 %Potter County12Sanborn County: 12 %Sanborn County12Spink County: 12 %Spink County12Clay County: 11.9 %Clay County11.9Stanley County: 11.9 %Stanley County11.9
%. 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

RankCounties2015 (%)Change on 2014
1Bennett County22.3+2 pts
2Jackson County22.2-1.6 pts
3Dewey County22.1+0.5 pts
4Buffalo County20.7+2.6 pts
5Corson County19.7-1 pts
6Charles Mix County19.5+0.3 pts
7Oglala Lakota County18.2-0.5 pts
7Ziebach County18.2-3.2 pts
9Roberts County18+0.9 pts
10Mellette County17.9-2.2 pts
11Lyman County17.8-1.2 pts
12Brule County17.5+2.4 pts
12Todd County17.5+0.9 pts
14Jones County17.3-3.5 pts
15Marshall County17.1+0.4 pts
16Gregory County16.7-0.9 pts
17Day County16.6+0.6 pts
18Tripp County16-1.7 pts
19Walworth County14.9+2.4 pts
20Aurora County14.7+1.6 pts
20Beadle County14.7+0.1 pts
22Moody County14.6+0.7 pts
22Perkins County14.6-3 pts
24Butte County13.9-0.9 pts
25Clark County13.8-1.6 pts
25Sully County13.8+1.9 pts
27McPherson County13.1-1.5 pts
27Pennington County13.1+0.5 pts
29Douglas County12.9-2.5 pts
30Bon Homme County12.8+0.5 pts
30Custer County12.8+0.5 pts
32Harding County12.7-4 pts
33Haakon County12.5-2.8 pts
34Fall River County12.3-1 pts
35Hyde County12.1-0.4 pts
36Potter County12-1.1 pts
36Sanborn County12-3.1 pts
36Spink County12+0.8 pts
39Clay County11.9-1 pts
39Stanley County11.9-1.3 pts
41Lawrence County11.8-1.3 pts
42Deuel County11.5-0.4 pts
42Hamlin County11.5-0.2 pts
42Jerauld County11.5-1 pts
45Hutchinson County11.4-1.4 pts
46Campbell County11.30 pts
46Hanson County11.3-0.7 pts
46Meade County11.3-1 pts
49Grant County11.1-0.7 pts
50Edmunds County11+0.6 pts
51Hughes County10.9+0.3 pts
52Brookings County10.8+0.4 pts
53Turner County10.7-0.5 pts
54Minnehaha County10.5+0.8 pts
55Davison County10.3-0.4 pts
55Hand County10.3-0.1 pts
57Brown County10.2+0.7 pts
57Codington County10.2+0.4 pts
57McCook County10.2+0.2 pts
57Yankton County10.2-0.7 pts
61Miner County9.8-0.7 pts
62Lake County9.5+0.1 pts
63Faulk County9.1-0.1 pts
63Kingsbury County9.1-0.7 pts
65Union County6.8-0.6 pts
66Lincoln County5.8-0.2 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-2015-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), 2015) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-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), 2015. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2015. 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), 2015. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2015.

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), 2015 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2015 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_dakota_2015,
  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), 2015}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2015-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2015. 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-2015-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), 2015
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-2015-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2015
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/south-dakota-counties?period=2015.
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-2015-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)?

Bennett County, with 22.3% in 2015, according to the U.S. Census Bureau.

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

Lincoln County, with 5.8% in 2015.

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