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 2019, at 32.2%. Lincoln County had the lowest, at 8.3%. The median was 14.3% and the figure for South Dakota was 14%. Source: the U.S. Census Bureau.

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Highest32.2Jackson County
Lowest8.3Lincoln County
Median14.366 counties
South Dakota14History

Map of counties, 2019

Aurora County: 19.1 %Beadle County: 19.3 %Bennett County: 28.9 %Bon Homme County: 14.1 %Brookings County: 11 %Brown County: 14.4 %Brule County: 19.3 %Buffalo County: 26.1 %Butte County: 18.7 %Campbell County: 11.8 %Charles Mix County: 22.6 %Clark County: 14 %Clay County: 12.4 %Codington County: 12.1 %Corson County: 27 %Custer County: 13.6 %Davison County: 11.9 %Day County: 17 %Deuel County: 13 %Dewey County: 28.1 %Douglas County: 15.7 %Edmunds County: 12.1 %Fall River County: 14.7 %Faulk County: 15.4 %Grant County: 12.8 %Gregory County: 18.9 %Haakon County: 14.8 %Hamlin County: 14.1 %Hand County: 11.3 %Hanson County: 11.4 %Harding County: 20.5 %Hughes County: 12.4 %Hutchinson County: 14.7 %Hyde County: 17.1 %Jackson County: 32.2 %Jerauld County: 12.5 %Jones County: 16.5 %Kingsbury County: 11.5 %Lake County: 9.8 %Lawrence County: 13.5 %Lincoln County: 8.3 %Lyman County: 20.2 %McCook County: 14.1 %McPherson County: 14.2 %Marshall County: 16.6 %Meade County: 11.8 %Mellette County: 28.7 %Miner County: 12.9 %Minnehaha County: 12.8 %Moody County: 15.9 %Oglala Lakota County: 24 %Pennington County: 15.3 %Perkins County: 17.3 %Potter County: 12.1 %Roberts County: 22.4 %Sanborn County: 12.5 %Spink County: 12.4 %Stanley County: 12.7 %Sully County: 10.6 %Todd County: 27.8 %Tripp County: 20.4 %Turner County: 12 %Union County: 9.1 %Walworth County: 16.8 %Yankton County: 12.8 %Ziebach County: 24.9 %
  • Under 12
  • 12 to 13
  • 13 to 14
  • 14 to 17
  • 17 to 21
  • 21 and over
%, 2019. 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, 2019

Jackson County: 32.2 %Jackson County32.2Bennett County: 28.9 %Bennett County28.9Mellette County: 28.7 %Mellette County28.7Dewey County: 28.1 %Dewey County28.1Todd County: 27.8 %Todd County27.8Corson County: 27 %Corson County27Buffalo County: 26.1 %Buffalo County26.1Ziebach County: 24.9 %Ziebach County24.9Oglala Lakota County: 24 %Oglala Lakota County24Charles Mix County: 22.6 %Charles Mix County22.6Roberts County: 22.4 %Roberts County22.4Harding County: 20.5 %Harding County20.5Tripp County: 20.4 %Tripp County20.4Lyman County: 20.2 %Lyman County20.2Beadle County: 19.3 %Beadle County19.3Brule County: 19.3 %Brule County19.3Aurora County: 19.1 %Aurora County19.1Gregory County: 18.9 %Gregory County18.9Butte County: 18.7 %Butte County18.7Perkins County: 17.3 %Perkins County17.3Hyde County: 17.1 %Hyde County17.1Day County: 17 %Day County17Walworth County: 16.8 %Walworth County16.8Marshall County: 16.6 %Marshall County16.6Jones County: 16.5 %Jones County16.5Moody County: 15.9 %Moody County15.9Douglas County: 15.7 %Douglas County15.7Faulk County: 15.4 %Faulk County15.4Pennington County: 15.3 %Pennington County15.3Haakon County: 14.8 %Haakon County14.8Fall River County: 14.7 %Fall River County14.7Hutchinson County: 14.7 %Hutchinson County14.7Brown County: 14.4 %Brown County14.4McPherson County: 14.2 %McPherson County14.2Bon Homme County: 14.1 %Bon Homme County14.1Hamlin County: 14.1 %Hamlin County14.1McCook County: 14.1 %McCook County14.1Clark County: 14 %Clark County14Custer County: 13.6 %Custer County13.6Lawrence County: 13.5 %Lawrence County13.5Jackson County: 32.2 %Jackson County32.2Bennett County: 28.9 %Bennett County28.9Mellette County: 28.7 %Mellette County28.7Dewey County: 28.1 %Dewey County28.1Todd County: 27.8 %Todd County27.8Corson County: 27 %Corson County27Buffalo County: 26.1 %Buffalo County26.1Ziebach County: 24.9 %Ziebach County24.9Oglala Lakota County: 24 %Oglala Lakota County24Charles Mix County: 22.6 %Charles Mix County22.6Roberts County: 22.4 %Roberts County22.4Harding County: 20.5 %Harding County20.5Tripp County: 20.4 %Tripp County20.4Lyman County: 20.2 %Lyman County20.2Beadle County: 19.3 %Beadle County19.3Brule County: 19.3 %Brule County19.3Aurora County: 19.1 %Aurora County19.1Gregory County: 18.9 %Gregory County18.9Butte County: 18.7 %Butte County18.7Perkins County: 17.3 %Perkins County17.3Hyde County: 17.1 %Hyde County17.1Day County: 17 %Day County17Walworth County: 16.8 %Walworth County16.8Marshall County: 16.6 %Marshall County16.6Jones County: 16.5 %Jones County16.5Moody County: 15.9 %Moody County15.9Douglas County: 15.7 %Douglas County15.7Faulk County: 15.4 %Faulk County15.4Pennington County: 15.3 %Pennington County15.3Haakon County: 14.8 %Haakon County14.8Fall River County: 14.7 %Fall River County14.7Hutchinson County: 14.7 %Hutchinson County14.7Brown County: 14.4 %Brown County14.4McPherson County: 14.2 %McPherson County14.2Bon Homme County: 14.1 %Bon Homme County14.1Hamlin County: 14.1 %Hamlin County14.1McCook County: 14.1 %McCook County14.1Clark County: 14 %Clark County14Custer County: 13.6 %Custer County13.6Lawrence County: 13.5 %Lawrence County13.5
%. 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

RankCounties2019 (%)Change on 2018
1Jackson County32.2+3.8 pts
2Bennett County28.9+1.6 pts
3Mellette County28.7+3.1 pts
4Dewey County28.1+2.1 pts
5Todd County27.8-0.3 pts
6Corson County27-1.3 pts
7Buffalo County26.1-2.4 pts
8Ziebach County24.9-1.6 pts
9Oglala Lakota County24-0.4 pts
10Charles Mix County22.6+1.3 pts
11Roberts County22.4+1.1 pts
12Harding County20.5+7.3 pts
13Tripp County20.4+0.4 pts
14Lyman County20.2-0.3 pts
15Beadle County19.3+0.6 pts
15Brule County19.3+0.4 pts
17Aurora County19.1+1.5 pts
18Gregory County18.9-0.1 pts
19Butte County18.7+2.7 pts
20Perkins County17.3+1.5 pts
21Hyde County17.1+3.2 pts
22Day County17+0.9 pts
23Walworth County16.8+0.3 pts
24Marshall County16.6-1.6 pts
25Jones County16.5+2.3 pts
26Moody County15.9-1.5 pts
27Douglas County15.7-0.6 pts
28Faulk County15.4+2.4 pts
29Pennington County15.3-0.7 pts
30Haakon County14.8+2.9 pts
31Fall River County14.7+1.8 pts
31Hutchinson County14.7+0.3 pts
33Brown County14.4+1.7 pts
34McPherson County14.2+0.5 pts
35Bon Homme County14.1+1 pts
35Hamlin County14.1+2.2 pts
35McCook County14.10 pts
38Clark County14-1.1 pts
39Custer County13.6+0.1 pts
40Lawrence County13.5+0.8 pts
41Deuel County13+1 pts
42Miner County12.9+1.2 pts
43Grant County12.8-0.3 pts
43Minnehaha County12.8+0.7 pts
43Yankton County12.8+0.7 pts
46Stanley County12.7+1 pts
47Jerauld County12.5-0.8 pts
47Sanborn County12.5+0.3 pts
49Clay County12.4+0.8 pts
49Hughes County12.40 pts
49Spink County12.4+0.2 pts
52Codington County12.1+1.2 pts
52Edmunds County12.1+0.3 pts
52Potter County12.1+1 pts
55Turner County12+0.2 pts
56Davison County11.9+0.1 pts
57Campbell County11.8+0.7 pts
57Meade County11.8+0.6 pts
59Kingsbury County11.5+0.3 pts
60Hanson County11.4-1.3 pts
61Hand County11.3-0.6 pts
62Brookings County11+0.2 pts
63Sully County10.6-1.4 pts
64Lake County9.8-0.3 pts
65Union County9.1+1.1 pts
66Lincoln County8.3+0.4 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-2019-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), 2019) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-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), 2019. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2019. 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), 2019. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2019.

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), 2019 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2019 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_dakota_2019,
  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), 2019}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2019. 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-2019-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), 2019
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-2019-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2019.
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-2019-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 32.2% in 2019, 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 8.3% in 2019.

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