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)

Jackson County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 66 counties in 2017, at 31.1%. Lincoln County had the lowest, at 7.3%. The median was 13.3% and the figure for South Dakota was 12.7%. Source: the U.S. Census Bureau.

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Highest31.1Jackson County
Lowest7.3Lincoln County
Median13.366 counties
South Dakota12.7History

Map of counties, 2017

Aurora County: 16.8 %Beadle County: 16.6 %Bennett County: 28.5 %Bon Homme County: 12.2 %Brookings County: 10.4 %Brown County: 12.5 %Brule County: 19.8 %Buffalo County: 27.4 %Butte County: 13.5 %Campbell County: 11.7 %Charles Mix County: 21.1 %Clark County: 16.1 %Clay County: 11.9 %Codington County: 10.3 %Corson County: 28.4 %Custer County: 12.9 %Davison County: 9.9 %Day County: 15.6 %Deuel County: 10.7 %Dewey County: 26.9 %Douglas County: 14.2 %Edmunds County: 12.2 %Fall River County: 12.5 %Faulk County: 10.8 %Grant County: 11.9 %Gregory County: 17 %Haakon County: 13.4 %Hamlin County: 12.6 %Hand County: 11.4 %Hanson County: 12.7 %Harding County: 14.2 %Hughes County: 11.3 %Hutchinson County: 13.5 %Hyde County: 13.2 %Jackson County: 31.1 %Jerauld County: 12.3 %Jones County: 17.4 %Kingsbury County: 10.8 %Lake County: 8.7 %Lawrence County: 11.4 %Lincoln County: 7.3 %Lyman County: 22.6 %McCook County: 12 %McPherson County: 14.6 %Marshall County: 18.8 %Meade County: 12 %Mellette County: 29 %Miner County: 10.9 %Minnehaha County: 10.4 %Moody County: 17.3 %Oglala Lakota County: 24 %Pennington County: 14 %Perkins County: 16.6 %Potter County: 12.4 %Roberts County: 22.6 %Sanborn County: 14 %Spink County: 12.1 %Stanley County: 11.9 %Sully County: 13.3 %Todd County: 25.5 %Tripp County: 20.2 %Turner County: 11.1 %Union County: 8.8 %Walworth County: 15.9 %Yankton County: 11 %Ziebach County: 28.2 %
  • Under 11
  • 11 to 12
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%, 2017. 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, 2017

Jackson County: 31.1 %Jackson County31.1Mellette County: 29 %Mellette County29Bennett County: 28.5 %Bennett County28.5Corson County: 28.4 %Corson County28.4Ziebach County: 28.2 %Ziebach County28.2Buffalo County: 27.4 %Buffalo County27.4Dewey County: 26.9 %Dewey County26.9Todd County: 25.5 %Todd County25.5Oglala Lakota County: 24 %Oglala Lakota County24Lyman County: 22.6 %Lyman County22.6Roberts County: 22.6 %Roberts County22.6Charles Mix County: 21.1 %Charles Mix County21.1Tripp County: 20.2 %Tripp County20.2Brule County: 19.8 %Brule County19.8Marshall County: 18.8 %Marshall County18.8Jones County: 17.4 %Jones County17.4Moody County: 17.3 %Moody County17.3Gregory County: 17 %Gregory County17Aurora County: 16.8 %Aurora County16.8Beadle County: 16.6 %Beadle County16.6Perkins County: 16.6 %Perkins County16.6Clark County: 16.1 %Clark County16.1Walworth County: 15.9 %Walworth County15.9Day County: 15.6 %Day County15.6McPherson County: 14.6 %McPherson County14.6Douglas County: 14.2 %Douglas County14.2Harding County: 14.2 %Harding County14.2Pennington County: 14 %Pennington County14Sanborn County: 14 %Sanborn County14Butte County: 13.5 %Butte County13.5Hutchinson County: 13.5 %Hutchinson County13.5Haakon County: 13.4 %Haakon County13.4Sully County: 13.3 %Sully County13.3Hyde County: 13.2 %Hyde County13.2Custer County: 12.9 %Custer County12.9Hanson County: 12.7 %Hanson County12.7Hamlin County: 12.6 %Hamlin County12.6Brown County: 12.5 %Brown County12.5Fall River County: 12.5 %Fall River County12.5Potter County: 12.4 %Potter County12.4Jackson County: 31.1 %Jackson County31.1Mellette County: 29 %Mellette County29Bennett County: 28.5 %Bennett County28.5Corson County: 28.4 %Corson County28.4Ziebach County: 28.2 %Ziebach County28.2Buffalo County: 27.4 %Buffalo County27.4Dewey County: 26.9 %Dewey County26.9Todd County: 25.5 %Todd County25.5Oglala Lakota County: 24 %Oglala Lakota County24Lyman County: 22.6 %Lyman County22.6Roberts County: 22.6 %Roberts County22.6Charles Mix County: 21.1 %Charles Mix County21.1Tripp County: 20.2 %Tripp County20.2Brule County: 19.8 %Brule County19.8Marshall County: 18.8 %Marshall County18.8Jones County: 17.4 %Jones County17.4Moody County: 17.3 %Moody County17.3Gregory County: 17 %Gregory County17Aurora County: 16.8 %Aurora County16.8Beadle County: 16.6 %Beadle County16.6Perkins County: 16.6 %Perkins County16.6Clark County: 16.1 %Clark County16.1Walworth County: 15.9 %Walworth County15.9Day County: 15.6 %Day County15.6McPherson County: 14.6 %McPherson County14.6Douglas County: 14.2 %Douglas County14.2Harding County: 14.2 %Harding County14.2Pennington County: 14 %Pennington County14Sanborn County: 14 %Sanborn County14Butte County: 13.5 %Butte County13.5Hutchinson County: 13.5 %Hutchinson County13.5Haakon County: 13.4 %Haakon County13.4Sully County: 13.3 %Sully County13.3Hyde County: 13.2 %Hyde County13.2Custer County: 12.9 %Custer County12.9Hanson County: 12.7 %Hanson County12.7Hamlin County: 12.6 %Hamlin County12.6Brown County: 12.5 %Brown County12.5Fall River County: 12.5 %Fall River County12.5Potter County: 12.4 %Potter County12.4
%. 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

RankCounties2017 (%)Change on 2016
1Jackson County31.1+3 pts
2Mellette County29+3.3 pts
3Bennett County28.5+0.1 pts
4Corson County28.4+2.4 pts
5Ziebach County28.2+3.7 pts
6Buffalo County27.4+1.1 pts
7Dewey County26.9+0.9 pts
8Todd County25.5+0.3 pts
9Oglala Lakota County24+1.7 pts
10Lyman County22.6+0.5 pts
10Roberts County22.6+0.6 pts
12Charles Mix County21.1-0.3 pts
13Tripp County20.2+2.3 pts
14Brule County19.8+1.4 pts
15Marshall County18.8+0.5 pts
16Jones County17.4-0.2 pts
17Moody County17.30 pts
18Gregory County17-0.9 pts
19Aurora County16.8+2 pts
20Beadle County16.6+0.5 pts
20Perkins County16.6+1.2 pts
22Clark County16.1+1.5 pts
23Walworth County15.9+0.6 pts
24Day County15.6-1.9 pts
25McPherson County14.6+2.4 pts
26Douglas County14.2+1.6 pts
26Harding County14.2+0.9 pts
28Pennington County14+1.2 pts
28Sanborn County14+3.4 pts
30Butte County13.5-1.5 pts
30Hutchinson County13.5+1.1 pts
32Haakon County13.40 pts
33Sully County13.3+1.1 pts
34Hyde County13.2+2.8 pts
35Custer County12.9+1.1 pts
36Hanson County12.7+1.8 pts
37Hamlin County12.6+0.9 pts
38Brown County12.5+1.1 pts
38Fall River County12.5+0.5 pts
40Potter County12.4+1.1 pts
41Jerauld County12.3+2.1 pts
42Bon Homme County12.2-0.3 pts
42Edmunds County12.2+1.3 pts
44Spink County12.1+0.3 pts
45McCook County12+0.6 pts
45Meade County12-0.6 pts
47Clay County11.9-2 pts
47Grant County11.9+0.7 pts
47Stanley County11.9+0.9 pts
50Campbell County11.7+1.5 pts
51Hand County11.4+2 pts
51Lawrence County11.4+0.4 pts
53Hughes County11.3-0.1 pts
54Turner County11.1+0.4 pts
55Yankton County11+0.2 pts
56Miner County10.9+0.9 pts
57Faulk County10.8+1.5 pts
57Kingsbury County10.8+1.4 pts
59Deuel County10.7-1.4 pts
60Brookings County10.4+0.6 pts
60Minnehaha County10.4-2 pts
62Codington County10.3-0.9 pts
63Davison County9.9-0.7 pts
64Union County8.8+1.4 pts
65Lake County8.7-1.1 pts
66Lincoln County7.3+0.7 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-2017-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), 2017) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2017-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), 2017. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2017-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2017. 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), 2017. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2017-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2017.

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), 2017 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2017-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2017 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_dakota_2017,
  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), 2017}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2017-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2017. 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-2017-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), 2017
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-2017-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2017
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2017.
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-2017-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)?

Jackson County, with 31.1% in 2017, according to the U.S. Census Bureau.

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

Lincoln County, with 7.3% in 2017.

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