Counties in South Dakota by uninsured rate, 65 and over (US, ACS), 2024

Buffalo County had the highest uninsured rate, 65 and over (US, ACS) of 66 counties in 2024, at 4.2%. Tripp County had the lowest, at 0%. The median was 0.2% and the figure for South Dakota was 0.4%. Source: the U.S. Census Bureau.

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Highest4.2Buffalo County
Median0.266 counties
South Dakota0.4History

Map of counties, 2024

Aurora County: 1.7 %Beadle County: 0.2 %Bennett County: 0 %Bon Homme County: 0.5 %Brookings County: 0 %Brown County: 0 %Brule County: 1 %Buffalo County: 4.2 %Butte County: 0.5 %Campbell County: 0.2 %Charles Mix County: 0.6 %Clark County: 0 %Clay County: 0 %Codington County: 0.1 %Corson County: 0.6 %Custer County: 0 %Davison County: 0.4 %Day County: 1.4 %Deuel County: 0 %Dewey County: 0.8 %Douglas County: 2.2 %Edmunds County: 0 %Fall River County: 0.9 %Faulk County: 0 %Grant County: 0 %Gregory County: 1.3 %Haakon County: 0 %Hamlin County: 0 %Hand County: 0.3 %Hanson County: 0.2 %Harding County: 0 %Hughes County: 0.5 %Hutchinson County: 0 %Hyde County: 0 %Jackson County: 0 %Jerauld County: 0 %Jones County: 0 %Kingsbury County: 0 %Lake County: 0 %Lawrence County: 0.3 %Lincoln County: 0 %Lyman County: 2.5 %McCook County: 0.9 %McPherson County: 1.5 %Marshall County: 0 %Meade County: 0.2 %Mellette County: 0 %Miner County: 0 %Minnehaha County: 0.3 %Moody County: 1.1 %Oglala Lakota County: 3.7 %Pennington County: 0.5 %Perkins County: 0 %Potter County: 0 %Roberts County: 1.1 %Sanborn County: 0 %Spink County: 0 %Stanley County: 2.9 %Sully County: 0 %Todd County: 0 %Tripp County: 0 %Turner County: 0.1 %Union County: 0.8 %Walworth County: 1 %Yankton County: 0.2 %Ziebach County: 2.5 %
  • Under 0.1
  • 0.1 to 0.5
  • 0.5 to 1.1
  • 1.1 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2024

Buffalo County: 4.2 %Buffalo County4.2Oglala Lakota County: 3.7 %Oglala Lakota County3.7Stanley County: 2.9 %Stanley County2.9Lyman County: 2.5 %Lyman County2.5Ziebach County: 2.5 %Ziebach County2.5Douglas County: 2.2 %Douglas County2.2Aurora County: 1.7 %Aurora County1.7McPherson County: 1.5 %McPherson County1.5Day County: 1.4 %Day County1.4Gregory County: 1.3 %Gregory County1.3Roberts County: 1.1 %Roberts County1.1Moody County: 1.1 %Moody County1.1Brule County: 1 %Brule County1Walworth County: 1 %Walworth County1McCook County: 0.9 %McCook County0.9Fall River County: 0.9 %Fall River County0.9Dewey County: 0.8 %Dewey County0.8Union County: 0.8 %Union County0.8Charles Mix County: 0.6 %Charles Mix County0.6Corson County: 0.6 %Corson County0.6Hughes County: 0.5 %Hughes County0.5Butte County: 0.5 %Butte County0.5Bon Homme County: 0.5 %Bon Homme County0.5Pennington County: 0.5 %Pennington County0.5Davison County: 0.4 %Davison County0.4Lawrence County: 0.3 %Lawrence County0.3Hand County: 0.3 %Hand County0.3Minnehaha County: 0.3 %Minnehaha County0.3Campbell County: 0.2 %Campbell County0.2Yankton County: 0.2 %Yankton County0.2Beadle County: 0.2 %Beadle County0.2Hanson County: 0.2 %Hanson County0.2Meade County: 0.2 %Meade County0.2Turner County: 0.1 %Turner County0.1Codington County: 0.1 %Codington County0.1Custer County: 0 %Custer County0Bennett County: 0 %Bennett County0Brookings County: 0 %Brookings County0Brown County: 0 %Brown County0Clark County: 0 %Clark County0Buffalo County: 4.2 %Buffalo County4.2Oglala Lakota County: 3.7 %Oglala Lakota County3.7Stanley County: 2.9 %Stanley County2.9Lyman County: 2.5 %Lyman County2.5Ziebach County: 2.5 %Ziebach County2.5Douglas County: 2.2 %Douglas County2.2Aurora County: 1.7 %Aurora County1.7McPherson County: 1.5 %McPherson County1.5Day County: 1.4 %Day County1.4Gregory County: 1.3 %Gregory County1.3Roberts County: 1.1 %Roberts County1.1Moody County: 1.1 %Moody County1.1Brule County: 1 %Brule County1Walworth County: 1 %Walworth County1McCook County: 0.9 %McCook County0.9Fall River County: 0.9 %Fall River County0.9Dewey County: 0.8 %Dewey County0.8Union County: 0.8 %Union County0.8Charles Mix County: 0.6 %Charles Mix County0.6Corson County: 0.6 %Corson County0.6Hughes County: 0.5 %Hughes County0.5Butte County: 0.5 %Butte County0.5Bon Homme County: 0.5 %Bon Homme County0.5Pennington County: 0.5 %Pennington County0.5Davison County: 0.4 %Davison County0.4Lawrence County: 0.3 %Lawrence County0.3Hand County: 0.3 %Hand County0.3Minnehaha County: 0.3 %Minnehaha County0.3Campbell County: 0.2 %Campbell County0.2Yankton County: 0.2 %Yankton County0.2Beadle County: 0.2 %Beadle County0.2Hanson County: 0.2 %Hanson County0.2Meade County: 0.2 %Meade County0.2Turner County: 0.1 %Turner County0.1Codington County: 0.1 %Codington County0.1Custer County: 0 %Custer County0Bennett County: 0 %Bennett County0Brookings County: 0 %Brookings County0Brown County: 0 %Brown County0Clark County: 0 %Clark County0
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Buffalo County4.2+1.2 pts
2Oglala Lakota County3.7+1.7 pts
3Stanley County2.9+0.3 pts
4Lyman County2.5+0.1 pts
5Ziebach County2.5+1 pts
6Douglas County2.2-0.1 pts
7Aurora County1.7+1.7 pts
8McPherson County1.5+0.2 pts
9Day County1.4+0.4 pts
10Gregory County1.3+0.7 pts
11Roberts County1.1+0.5 pts
12Moody County1.1+1.1 pts
13Brule County1+0.8 pts
14Walworth County10 pts
15McCook County0.9+0.2 pts
16Fall River County0.9-0.1 pts
17Dewey County0.8-0.6 pts
17Union County0.8+0.2 pts
19Charles Mix County0.6+0.2 pts
20Corson County0.60 pts
21Hughes County0.5+0.1 pts
22Butte County0.5+0.4 pts
23Bon Homme County0.5+0.5 pts
23Pennington County0.5+0.3 pts
25Davison County0.4+0.4 pts
26Lawrence County0.3+0.1 pts
27Hand County0.3+0.1 pts
27Minnehaha County0.30 pts
29Campbell County0.2-0 pts
30Yankton County0.2-0 pts
31Beadle County0.2+0.1 pts
31Hanson County0.20 pts
31Meade County0.2-0 pts
34Turner County0.1+0.1 pts
35Codington County0.1-0.1 pts
36Custer County0-0 pts
37Bennett County00 pts
37Brookings County00 pts
37Brown County00 pts
37Clark County00 pts
37Clay County00 pts
37Deuel County0-0.1 pts
37Edmunds County00 pts
37Faulk County00 pts
37Grant County00 pts
37Haakon County00 pts
37Hamlin County00 pts
37Harding County00 pts
37Hutchinson County00 pts
37Hyde County00 pts
37Jackson County0-1.6 pts
37Jerauld County00 pts
37Jones County00 pts
37Kingsbury County00 pts
37Lake County00 pts
37Lincoln County00 pts
37Marshall County0-0.5 pts
37Mellette County00 pts
37Miner County00 pts
37Perkins County00 pts
37Potter County00 pts
37Sanborn County00 pts
37Spink County00 pts
37Sully County00 pts
37Todd County00 pts
37Tripp County00 pts

Other periods

About this ranking

People aged 65 and over without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 65 and over. 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 aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-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 aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs (Counties in South Dakota by uninsured rate, 65 and over (US, ACS), 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs, Counties in South Dakota by uninsured rate, 65 and over (US, ACS), 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-65-and-over/south-dakota-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs. Counties in South Dakota by uninsured rate, 65 and over (US, ACS), 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-65-and-over/south-dakota-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs, Counties in South Dakota by uninsured rate, 65 and over (US, ACS), 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-65-and-over/south-dakota-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_dakota_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs: Counties in South Dakota by uninsured rate, 65 and over (US, ACS), 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-65-and-over/south-dakota-counties. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs: Counties in South Dakota by uninsured rate, 65 and over (US, ACS), 2024
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-65-and-over/south-dakota-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-65-and-over/south-dakota-counties.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Retrieved 2026-10-12.
ER  - 
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Questions

Which county has the highest uninsured rate, 65 and over (US, ACS)?

Buffalo County, with 4.2% in 2024, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, 65 and over (US, ACS)?

Tripp County, with 0% in 2024.

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 aged 65 and over with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 65 and over, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, 65 and over (US, ACS): other rankings

Counties in South Dakota: more rankings