# Counties in South Dakota by share of population aged 65 and over, 2025

All 66 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_65_plus_share`
- Unit: %
- Definition: Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.
- Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties (https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv)
- Retrieved: 2026-10-09
- Citation: U.S. Census Bureau. Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.
- Web page: https://invokely.ai/rankings/population-65-plus/south-dakota-counties
- CSV: https://invokely.ai/download/rankings/population-65-plus/south-dakota-counties.csv

| Rank | Place | % |
|---:|---|---:|
| 1 | Custer County | 36.6 |
| 2 | Fall River County | 35.6 |
| 3 | Potter County | 34.3 |
| 4 | McPherson County | 32.3 |
| 5 | Jerauld County | 32 |
| 6 | Campbell County | 31.2 |
| 7 | Perkins County | 29.8 |
| 8 | Gregory County | 29.3 |
| 9 | Day County | 28.5 |
| 10 | Haakon County | 27.9 |
| 11 | Douglas County | 27.8 |
| 12 | Hand County | 27.7 |
| 13 | Sully County | 27.2 |
| 14 | Miner County | 27.1 |
| 15 | Jones County | 27.1 |
| 16 | Lawrence County | 26.6 |
| 17 | Hyde County | 26.4 |
| 18 | Grant County | 26.2 |
| 19 | Kingsbury County | 25.6 |
| 20 | Edmunds County | 25.5 |
| 21 | Walworth County | 25.3 |
| 22 | Brule County | 25 |
| 23 | Faulk County | 24.9 |
| 24 | Spink County | 24.8 |
| 25 | Yankton County | 24.4 |
| 26 | Marshall County | 24.1 |
| 27 | Hutchinson County | 24.1 |
| 28 | Harding County | 23.6 |
| 29 | Butte County | 23.5 |
| 30 | Lake County | 23.5 |
| 31 | Tripp County | 23.5 |
| 32 | Deuel County | 23.4 |
| 33 | Stanley County | 23.4 |
| 34 | Sanborn County | 23.4 |
| 35 | Bon Homme County | 22.8 |
| 36 | Aurora County | 22.4 |
| 37 | Roberts County | 22.2 |
| 38 | McCook County | 22.2 |
| 39 | Davison County | 22.1 |
| 40 | Clark County | 21.9 |
| 41 | Moody County | 21.9 |
| 42 | Union County | 21.8 |
| 43 | Codington County | 21.1 |
| 44 | Brown County | 20.7 |
| 45 | Turner County | 20.7 |
| 46 | Pennington County | 20 |
| 47 | Hughes County | 19.9 |
| 48 | Meade County | 19.6 |
| 49 | Charles Mix County | 19.4 |
| 50 | Beadle County | 18.6 |
| 51 | Hanson County | 18.1 |
| 52 | Lyman County | 17.6 |
| 53 | Hamlin County | 16.5 |
| 54 | Bennett County | 16.1 |
| 55 | Lincoln County | 15.8 |
| 56 | Minnehaha County | 15.4 |
| 57 | Brookings County | 15.1 |
| 58 | Mellette County | 14.7 |
| 59 | Clay County | 14.2 |
| 60 | Jackson County | 13.3 |
| 61 | Corson County | 12.9 |
| 62 | Buffalo County | 12.5 |
| 63 | Dewey County | 11.3 |
| 64 | Ziebach County | 10.6 |
| 65 | Todd County | 8.7 |
| 66 | Oglala Lakota County | 7.9 |