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)

Dewey County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 66 counties in 2013, at 29.6%. Lincoln County had the lowest, at 8.4%. The median was 17% and the figure for South Dakota was 15.6%. Source: the U.S. Census Bureau.

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Highest29.6Dewey County
Lowest8.4Lincoln County
Median1766 counties
South Dakota15.6History

Map of counties, 2013

Aurora County: 17.1 %Beadle County: 19.1 %Bennett County: 26 %Bon Homme County: 16.7 %Brookings County: 14.8 %Brown County: 12 %Brule County: 19.9 %Buffalo County: 28.1 %Butte County: 20.2 %Campbell County: 15.1 %Charles Mix County: 24.4 %Clark County: 16.3 %Clay County: 16.5 %Codington County: 13.9 %Corson County: 28.3 %Custer County: 16.1 %Davison County: 13.9 %Day County: 18.8 %Deuel County: 14.6 %Dewey County: 29.6 %Douglas County: 18 %Edmunds County: 12.9 %Fall River County: 17.4 %Faulk County: 13.7 %Grant County: 15.6 %Gregory County: 20.4 %Haakon County: 17.3 %Hamlin County: 16.9 %Hand County: 13.6 %Hanson County: 16.5 %Harding County: 18.4 %Hughes County: 13 %Hutchinson County: 16.1 %Hyde County: 19.3 %Jackson County: 28.9 %Jerauld County: 16.9 %Jones County: 22.1 %Kingsbury County: 14 %Lake County: 12.6 %Lawrence County: 14.9 %Lincoln County: 8.4 %Lyman County: 27.2 %McCook County: 13 %McPherson County: 18.1 %Marshall County: 20.2 %Meade County: 17 %Mellette County: 27.2 %Miner County: 13.7 %Minnehaha County: 14.6 %Moody County: 17 %Oglala Lakota County: 25 %Pennington County: 16.3 %Perkins County: 22 %Potter County: 15.3 %Roberts County: 21.4 %Sanborn County: 18.6 %Spink County: 13.7 %Stanley County: 18 %Sully County: 17.3 %Todd County: 23.2 %Tripp County: 22.3 %Turner County: 15.3 %Union County: 9.7 %Walworth County: 17.5 %Yankton County: 14.3 %Ziebach County: 28.2 %
  • Under 14
  • 14 to 16
  • 16 to 17
  • 17 to 19
  • 19 to 22
  • 22 and over
%, 2013. 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, 2013

Dewey County: 29.6 %Dewey County29.6Jackson County: 28.9 %Jackson County28.9Corson County: 28.3 %Corson County28.3Ziebach County: 28.2 %Ziebach County28.2Buffalo County: 28.1 %Buffalo County28.1Lyman County: 27.2 %Lyman County27.2Mellette County: 27.2 %Mellette County27.2Bennett County: 26 %Bennett County26Oglala Lakota County: 25 %Oglala Lakota County25Charles Mix County: 24.4 %Charles Mix County24.4Todd County: 23.2 %Todd County23.2Tripp County: 22.3 %Tripp County22.3Jones County: 22.1 %Jones County22.1Perkins County: 22 %Perkins County22Roberts County: 21.4 %Roberts County21.4Gregory County: 20.4 %Gregory County20.4Butte County: 20.2 %Butte County20.2Marshall County: 20.2 %Marshall County20.2Brule County: 19.9 %Brule County19.9Hyde County: 19.3 %Hyde County19.3Beadle County: 19.1 %Beadle County19.1Day County: 18.8 %Day County18.8Sanborn County: 18.6 %Sanborn County18.6Harding County: 18.4 %Harding County18.4McPherson County: 18.1 %McPherson County18.1Douglas County: 18 %Douglas County18Stanley County: 18 %Stanley County18Walworth County: 17.5 %Walworth County17.5Fall River County: 17.4 %Fall River County17.4Haakon County: 17.3 %Haakon County17.3Sully County: 17.3 %Sully County17.3Aurora County: 17.1 %Aurora County17.1Meade County: 17 %Meade County17Moody County: 17 %Moody County17Hamlin County: 16.9 %Hamlin County16.9Jerauld County: 16.9 %Jerauld County16.9Bon Homme County: 16.7 %Bon Homme County16.7Clay County: 16.5 %Clay County16.5Hanson County: 16.5 %Hanson County16.5Clark County: 16.3 %Clark County16.3Dewey County: 29.6 %Dewey County29.6Jackson County: 28.9 %Jackson County28.9Corson County: 28.3 %Corson County28.3Ziebach County: 28.2 %Ziebach County28.2Buffalo County: 28.1 %Buffalo County28.1Lyman County: 27.2 %Lyman County27.2Mellette County: 27.2 %Mellette County27.2Bennett County: 26 %Bennett County26Oglala Lakota County: 25 %Oglala Lakota County25Charles Mix County: 24.4 %Charles Mix County24.4Todd County: 23.2 %Todd County23.2Tripp County: 22.3 %Tripp County22.3Jones County: 22.1 %Jones County22.1Perkins County: 22 %Perkins County22Roberts County: 21.4 %Roberts County21.4Gregory County: 20.4 %Gregory County20.4Butte County: 20.2 %Butte County20.2Marshall County: 20.2 %Marshall County20.2Brule County: 19.9 %Brule County19.9Hyde County: 19.3 %Hyde County19.3Beadle County: 19.1 %Beadle County19.1Day County: 18.8 %Day County18.8Sanborn County: 18.6 %Sanborn County18.6Harding County: 18.4 %Harding County18.4McPherson County: 18.1 %McPherson County18.1Douglas County: 18 %Douglas County18Stanley County: 18 %Stanley County18Walworth County: 17.5 %Walworth County17.5Fall River County: 17.4 %Fall River County17.4Haakon County: 17.3 %Haakon County17.3Sully County: 17.3 %Sully County17.3Aurora County: 17.1 %Aurora County17.1Meade County: 17 %Meade County17Moody County: 17 %Moody County17Hamlin County: 16.9 %Hamlin County16.9Jerauld County: 16.9 %Jerauld County16.9Bon Homme County: 16.7 %Bon Homme County16.7Clay County: 16.5 %Clay County16.5Hanson County: 16.5 %Hanson County16.5Clark County: 16.3 %Clark County16.3
%. 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

RankCounties2013 (%)Change on 2012
1Dewey County29.6-3.1 pts
2Jackson County28.9-3.1 pts
3Corson County28.3-1.9 pts
4Ziebach County28.2+0.4 pts
5Buffalo County28.1-3.2 pts
6Lyman County27.2+0.6 pts
6Mellette County27.2-1.5 pts
8Bennett County26-2.7 pts
9Oglala Lakota County25+0.1 pts
10Charles Mix County24.4+0.5 pts
11Todd County23.2-3.1 pts
12Tripp County22.3+1 pts
13Jones County22.1-2 pts
14Perkins County22+0.3 pts
15Roberts County21.4-3.3 pts
16Gregory County20.4-1.4 pts
17Butte County20.2-0.2 pts
17Marshall County20.2-0.4 pts
19Brule County19.9-0.2 pts
20Hyde County19.3-0.9 pts
21Beadle County19.1-0.7 pts
22Day County18.8-2 pts
23Sanborn County18.6-0.8 pts
24Harding County18.4-2.1 pts
25McPherson County18.1-2.6 pts
26Douglas County18-0.3 pts
26Stanley County18-1.5 pts
28Walworth County17.5-0.6 pts
29Fall River County17.4-1.7 pts
30Haakon County17.3-0.9 pts
30Sully County17.3+1.2 pts
32Aurora County17.1+0.9 pts
33Meade County17+0.4 pts
33Moody County17-0.7 pts
35Hamlin County16.9-0.5 pts
35Jerauld County16.9-0.2 pts
37Bon Homme County16.7+0.2 pts
38Clay County16.5-0.2 pts
38Hanson County16.5+0.2 pts
40Clark County16.3-2.8 pts
40Pennington County16.3-1.8 pts
42Custer County16.1-0.9 pts
42Hutchinson County16.1-0.7 pts
44Grant County15.6-0.5 pts
45Potter County15.3+0.2 pts
45Turner County15.3+0.3 pts
47Campbell County15.1-0.6 pts
48Lawrence County14.9-2.3 pts
49Brookings County14.8-0.7 pts
50Deuel County14.6-2.5 pts
50Minnehaha County14.6-1 pts
52Yankton County14.3-2 pts
53Kingsbury County14-2.3 pts
54Codington County13.9-1.6 pts
54Davison County13.9-1.7 pts
56Faulk County13.7-2.4 pts
56Miner County13.7-1.2 pts
56Spink County13.7-2.4 pts
59Hand County13.6-2.2 pts
60Hughes County13-1.2 pts
60McCook County13-1.5 pts
62Edmunds County12.9-2.5 pts
63Lake County12.6-0.5 pts
64Brown County12-0.9 pts
65Union County9.7-0.4 pts
66Lincoln County8.4-0.7 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-2013-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), 2013) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-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), 2013. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2013. 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), 2013. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2013.

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), 2013 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2013 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_dakota_2013,
  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), 2013}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2013. 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-2013-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), 2013
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-2013-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2013
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-dakota-counties?period=2013.
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-2013-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)?

Dewey County, with 29.6% in 2013, 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 8.4% in 2013.

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