Data / Rankings / Uninsured rate, under 19 (US, ACS) / Counties in South Dakota

Counties in South Dakota by uninsured rate, under 19 (US, ACS)

Buffalo County had the highest uninsured rate, under 19 (US, ACS) of 66 counties in 2021, at 27%. Stanley County had the lowest, at 0%. The median was 5.5% and the figure for South Dakota was 6.7%. Source: the U.S. Census Bureau.

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Highest27Buffalo County
Lowest0Stanley County
Median5.566 counties
South Dakota6.7History

Map of counties, 2021

Aurora County: 4 %Beadle County: 5.5 %Bennett County: 18.4 %Bon Homme County: 8.3 %Brookings County: 3.1 %Brown County: 4.7 %Brule County: 8 %Buffalo County: 27 %Butte County: 9.7 %Campbell County: 0 %Charles Mix County: 13.5 %Clark County: 2.8 %Clay County: 1.6 %Codington County: 4.7 %Corson County: 12.5 %Custer County: 17.5 %Davison County: 5.4 %Day County: 8.5 %Deuel County: 3.9 %Dewey County: 11.5 %Douglas County: 19.4 %Edmunds County: 0.9 %Fall River County: 7.9 %Faulk County: 1 %Grant County: 7.6 %Gregory County: 1.5 %Haakon County: 10.6 %Hamlin County: 10.1 %Hand County: 4.2 %Hanson County: 4.5 %Harding County: 1.3 %Hughes County: 4.9 %Hutchinson County: 2 %Hyde County: 5 %Jackson County: 15.3 %Jerauld County: 2.6 %Jones County: 6.4 %Kingsbury County: 2.5 %Lake County: 1.3 %Lawrence County: 6.6 %Lincoln County: 2.3 %Lyman County: 21 %McCook County: 4.1 %McPherson County: 5.4 %Marshall County: 2.8 %Meade County: 9.6 %Mellette County: 20.4 %Miner County: 4.3 %Minnehaha County: 5.6 %Moody County: 7.1 %Oglala Lakota County: 24.9 %Pennington County: 6.7 %Perkins County: 8.5 %Potter County: 11.6 %Roberts County: 20.5 %Sanborn County: 5.2 %Spink County: 3.4 %Stanley County: 0 %Sully County: 5.6 %Todd County: 8.9 %Tripp County: 3.7 %Turner County: 4.2 %Union County: 4.7 %Walworth County: 6.8 %Yankton County: 6.6 %Ziebach County: 12.9 %
  • Under 2.6
  • 2.6 to 4.3
  • 4.3 to 5.5
  • 5.5 to 8.1
  • 8.1 to 13
  • 13 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Buffalo County: 27 %Buffalo County27Oglala Lakota County: 24.9 %Oglala Lakota County24.9Lyman County: 21 %Lyman County21Roberts County: 20.5 %Roberts County20.5Mellette County: 20.4 %Mellette County20.4Douglas County: 19.4 %Douglas County19.4Bennett County: 18.4 %Bennett County18.4Custer County: 17.5 %Custer County17.5Jackson County: 15.3 %Jackson County15.3Charles Mix County: 13.5 %Charles Mix County13.5Ziebach County: 12.9 %Ziebach County12.9Corson County: 12.5 %Corson County12.5Potter County: 11.6 %Potter County11.6Dewey County: 11.5 %Dewey County11.5Haakon County: 10.6 %Haakon County10.6Hamlin County: 10.1 %Hamlin County10.1Butte County: 9.7 %Butte County9.7Meade County: 9.6 %Meade County9.6Todd County: 8.9 %Todd County8.9Perkins County: 8.5 %Perkins County8.5Day County: 8.5 %Day County8.5Bon Homme County: 8.3 %Bon Homme County8.3Brule County: 8 %Brule County8Fall River County: 7.9 %Fall River County7.9Grant County: 7.6 %Grant County7.6Moody County: 7.1 %Moody County7.1Walworth County: 6.8 %Walworth County6.8Pennington County: 6.7 %Pennington County6.7Yankton County: 6.6 %Yankton County6.6Lawrence County: 6.6 %Lawrence County6.6Jones County: 6.4 %Jones County6.4Minnehaha County: 5.6 %Minnehaha County5.6Sully County: 5.6 %Sully County5.6Beadle County: 5.5 %Beadle County5.5McPherson County: 5.4 %McPherson County5.4Davison County: 5.4 %Davison County5.4Sanborn County: 5.2 %Sanborn County5.2Hyde County: 5 %Hyde County5Hughes County: 4.9 %Hughes County4.9Codington County: 4.7 %Codington County4.7Buffalo County: 27 %Buffalo County27Oglala Lakota County: 24.9 %Oglala Lakota County24.9Lyman County: 21 %Lyman County21Roberts County: 20.5 %Roberts County20.5Mellette County: 20.4 %Mellette County20.4Douglas County: 19.4 %Douglas County19.4Bennett County: 18.4 %Bennett County18.4Custer County: 17.5 %Custer County17.5Jackson County: 15.3 %Jackson County15.3Charles Mix County: 13.5 %Charles Mix County13.5Ziebach County: 12.9 %Ziebach County12.9Corson County: 12.5 %Corson County12.5Potter County: 11.6 %Potter County11.6Dewey County: 11.5 %Dewey County11.5Haakon County: 10.6 %Haakon County10.6Hamlin County: 10.1 %Hamlin County10.1Butte County: 9.7 %Butte County9.7Meade County: 9.6 %Meade County9.6Todd County: 8.9 %Todd County8.9Perkins County: 8.5 %Perkins County8.5Day County: 8.5 %Day County8.5Bon Homme County: 8.3 %Bon Homme County8.3Brule County: 8 %Brule County8Fall River County: 7.9 %Fall River County7.9Grant County: 7.6 %Grant County7.6Moody County: 7.1 %Moody County7.1Walworth County: 6.8 %Walworth County6.8Pennington County: 6.7 %Pennington County6.7Yankton County: 6.6 %Yankton County6.6Lawrence County: 6.6 %Lawrence County6.6Jones County: 6.4 %Jones County6.4Minnehaha County: 5.6 %Minnehaha County5.6Sully County: 5.6 %Sully County5.6Beadle County: 5.5 %Beadle County5.5McPherson County: 5.4 %McPherson County5.4Davison County: 5.4 %Davison County5.4Sanborn County: 5.2 %Sanborn County5.2Hyde County: 5 %Hyde County5Hughes County: 4.9 %Hughes County4.9Codington County: 4.7 %Codington County4.7
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Buffalo County27
2Oglala Lakota County24.9
3Lyman County21
4Roberts County20.5
5Mellette County20.4
6Douglas County19.4
7Bennett County18.4
8Custer County17.5
9Jackson County15.3
10Charles Mix County13.5
11Ziebach County12.9
12Corson County12.5
13Potter County11.6
14Dewey County11.5
15Haakon County10.6
16Hamlin County10.1
17Butte County9.7
18Meade County9.6
19Todd County8.9
20Perkins County8.5
21Day County8.5
22Bon Homme County8.3
23Brule County8
24Fall River County7.9
25Grant County7.6
26Moody County7.1
27Walworth County6.8
28Pennington County6.7
29Yankton County6.6
30Lawrence County6.6
31Jones County6.4
32Minnehaha County5.6
33Sully County5.6
34Beadle County5.5
35McPherson County5.4
36Davison County5.4
37Sanborn County5.2
38Hyde County5
39Hughes County4.9
40Codington County4.7
41Brown County4.7
42Union County4.7
43Hanson County4.5
44Miner County4.3
45Turner County4.2
46Hand County4.2
47McCook County4.1
48Aurora County4
49Deuel County3.9
50Tripp County3.7
51Spink County3.4
52Brookings County3.1
53Clark County2.8
54Marshall County2.8
55Jerauld County2.6
56Kingsbury County2.5
57Lincoln County2.3
58Hutchinson County2
59Clay County1.6
60Gregory County1.5
61Lake County1.3
62Harding County1.3
63Faulk County1
64Edmunds County0.9
65Campbell County0
65Stanley County0

Other periods

About this ranking

People under 19 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population under 19. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Coverage is what people reported at the interview, so the five-year figure averages five years of answers. People whose only coverage is the Indian Health Service count as uninsured. Active-duty military and people living in institutions are outside the universe. For single-year model-based county figures under 65, see uninsured_rate_under_65, uninsured_rate_18_64 and uninsured_rate_under_19 (SAHIE), a different source.

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. American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. 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). American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs (Counties in South Dakota by uninsured rate, under 19 (US, ACS), 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs, Counties in South Dakota by uninsured rate, under 19 (US, ACS), 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-under-19-acs/south-dakota-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. Counties in South Dakota by uninsured rate, under 19 (US, ACS), 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-19-acs/south-dakota-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs, Counties in South Dakota by uninsured rate, under 19 (US, ACS), 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-19-acs/south-dakota-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_dakota_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs: Counties in South Dakota by uninsured rate, under 19 (US, ACS), 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19-acs/south-dakota-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs: Counties in South Dakota by uninsured rate, under 19 (US, ACS), 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-under-19-acs/south-dakota-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19-acs/south-dakota-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.
ER  -
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Rank Counties in South Dakota by uninsured rate, under 19 (US, ACS) using official data, and cite the source.
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Questions

Which county has the highest uninsured rate, under 19 (US, ACS)?

Buffalo County, with 27% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 19 (US, ACS)?

Stanley County, with 0% in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B27010: people under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, under 19 (US, ACS): other rankings

Counties in South Dakota: more rankings