# Counties in South Dakota by population density, 2025

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

- Indicator id: `population_density`
- Unit: inhabitants per km²
- Definition: Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.
- Source: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km² (https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/)
- Retrieved: 2026-10-09
- Citation: U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.
- Web page: https://invokely.ai/rankings/population-density/south-dakota-counties
- CSV: https://invokely.ai/download/rankings/population-density/south-dakota-counties.csv

| Rank | Place | inhabitants per km² |
|---:|---|---:|
| 1 | Minnehaha County | 101.8 |
| 2 | Lincoln County | 51.6 |
| 3 | Brookings County | 18.3 |
| 4 | Davison County | 17.8 |
| 5 | Yankton County | 17.5 |
| 6 | Codington County | 16.6 |
| 7 | Pennington County | 16.2 |
| 8 | Union County | 14.5 |
| 9 | Lawrence County | 14.2 |
| 10 | Clay County | 14.1 |
| 11 | Hughes County | 9.1 |
| 12 | Brown County | 8.5 |
| 13 | Lake County | 7.5 |
| 14 | Beadle County | 6 |
| 15 | Turner County | 5.8 |
| 16 | Hamlin County | 5.3 |
| 17 | Bon Homme County | 5 |
| 18 | Moody County | 4.9 |
| 19 | Grant County | 4.3 |
| 20 | McCook County | 4 |
| 21 | Roberts County | 3.6 |
| 22 | Hutchinson County | 3.5 |
| 23 | Meade County | 3.4 |
| 24 | Charles Mix County | 3.3 |
| 25 | Hanson County | 3.1 |
| 26 | Walworth County | 2.8 |
| 27 | Deuel County | 2.7 |
| 28 | Douglas County | 2.6 |
| 29 | Brule County | 2.5 |
| 30 | Todd County | 2.5 |
| 31 | Oglala Lakota County | 2.5 |
| 32 | Kingsbury County | 2.5 |
| 33 | Custer County | 2.3 |
| 34 | Day County | 2.1 |
| 35 | Marshall County | 2 |
| 36 | Butte County | 1.9 |
| 37 | Fall River County | 1.7 |
| 38 | Clark County | 1.6 |
| 39 | Sanborn County | 1.6 |
| 40 | Spink County | 1.6 |
| 41 | Miner County | 1.5 |
| 42 | Gregory County | 1.5 |
| 43 | Aurora County | 1.5 |
| 44 | Buffalo County | 1.5 |
| 45 | Edmunds County | 1.4 |
| 46 | Tripp County | 1.4 |
| 47 | Jerauld County | 1.2 |
| 48 | Bennett County | 1.1 |
| 49 | Potter County | 1.1 |
| 50 | Dewey County | 0.9 |
| 51 | Lyman County | 0.9 |
| 52 | Faulk County | 0.9 |
| 53 | Hand County | 0.8 |
| 54 | Stanley County | 0.8 |
| 55 | McPherson County | 0.8 |
| 56 | Campbell County | 0.7 |
| 57 | Mellette County | 0.6 |
| 58 | Corson County | 0.6 |
| 59 | Sully County | 0.6 |
| 60 | Jackson County | 0.6 |
| 61 | Hyde County | 0.5 |
| 62 | Ziebach County | 0.5 |
| 63 | Haakon County | 0.4 |
| 63 | Perkins County | 0.4 |
| 65 | Jones County | 0.4 |
| 66 | Harding County | 0.2 |