# Counties in South Dakota by average household size, 2024

All 66 values come from U.S. Census Bureau for 2024, so the places are comparable.

- Indicator id: `average_household_size`
- Unit: persons per household
- Definition: Average number of persons per private household. EU countries: EU-SILC. United States: American Community Survey five-year estimate of people in households divided by occupied housing units, where the period shown is the last year of the five-year span.
- Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25010: average household size of occupied housing units (https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25010.dat)
- Publisher page: https://invokely.ai/en/publishers/us-census-bureau
- Retrieved: 2026-10-12
- Citation: U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25010.dat. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/average-household-size/south-dakota-counties

| Rank | Place | persons per household |
|---:|---|---:|
| 1 | Oglala Lakota County | 4.5 |
| 2 | Bennett County | 3.6 |
| 3 | Todd County | 3.6 |
| 4 | Buffalo County | 3.6 |
| 5 | Corson County | 3.4 |
| 6 | Jackson County | 3.3 |
| 7 | Ziebach County | 3.2 |
| 8 | Lyman County | 3.1 |
| 9 | Dewey County | 3 |
| 10 | Hanson County | 3 |
| 11 | Mellette County | 3 |
| 12 | Charles Mix County | 3 |
| 13 | Jones County | 2.9 |
| 14 | Hamlin County | 2.8 |
| 15 | Clark County | 2.8 |
| 16 | Roberts County | 2.8 |
| 17 | Marshall County | 2.6 |
| 18 | Brule County | 2.5 |
| 18 | Lincoln County | 2.5 |
| 20 | McCook County | 2.5 |
| 21 | Beadle County | 2.5 |
| 22 | Sanborn County | 2.5 |
| 23 | Meade County | 2.5 |
| 23 | Moody County | 2.5 |
| 25 | Deuel County | 2.5 |
| 25 | Gregory County | 2.5 |
| 27 | Butte County | 2.4 |
| 28 | Haakon County | 2.4 |
| 29 | Edmunds County | 2.4 |
| 29 | Kingsbury County | 2.4 |
| 29 | Turner County | 2.4 |
| 32 | Aurora County | 2.4 |
| 32 | Miner County | 2.4 |
| 34 | Grant County | 2.4 |
| 34 | Hutchinson County | 2.4 |
| 34 | Spink County | 2.4 |
| 34 | Sully County | 2.4 |
| 34 | Tripp County | 2.4 |
| 39 | Pennington County | 2.4 |
| 40 | Douglas County | 2.4 |
| 41 | Stanley County | 2.3 |
| 42 | Brookings County | 2.3 |
| 42 | Minnehaha County | 2.3 |
| 44 | Union County | 2.3 |
| 45 | Hughes County | 2.3 |
| 46 | Clay County | 2.3 |
| 47 | Bon Homme County | 2.3 |
| 48 | Hyde County | 2.3 |
| 49 | Brown County | 2.3 |
| 50 | Codington County | 2.3 |
| 50 | Faulk County | 2.3 |
| 52 | Day County | 2.2 |
| 53 | Perkins County | 2.2 |
| 54 | Harding County | 2.2 |
| 54 | Yankton County | 2.2 |
| 56 | Jerauld County | 2.2 |
| 56 | Lake County | 2.2 |
| 58 | Hand County | 2.2 |
| 58 | Lawrence County | 2.2 |
| 58 | Potter County | 2.2 |
| 61 | Davison County | 2.2 |
| 62 | Walworth County | 2.1 |
| 63 | Campbell County | 2.1 |
| 64 | McPherson County | 2 |
| 65 | Custer County | 2 |
| 66 | Fall River County | 1.9 |