7 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Springfield | 1 | 1,915 | 1,909 | 0.05% | 1,857 | 1.03 | City |
| Tyndall | 2 | 1,090 | 1,052 | 0.74% | 691 | 1.58 | City |
| Scotland | 3 | 786 | 781 | 0.13% | 878 | 0.90 | City |
| Avon | 4 | 603 | 582 | 0.67% | 931 | 0.65 | City |
| Tabor | 5 | 402 | 404 | 0% | 1,061 | 0.38 | Town |
| Running Water | 6 | 95 | 25 | 6.74% | 45 | 2.09 | CDP |
| Scotland township | 7 | 37 | 34 | 2.78% | 1 | 35.94 | Township |
Springfield is the largest city in Bon Homme County, with a population of 1,915.
Scotland township is the smallest city in Bon Homme County.
There are 7 cities in Bon Homme County, South Dakota.