2 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Buffalo | 1 | 362 | 347 | 0.84% | 653 | 0.55 | Town |
| Camp Crook | 2 | 66 | 60 | 1.54% | 475 | 0.14 | Town |
Buffalo is the largest city in Harding County, with a population of 362.
Camp Crook is the smallest city in Harding County.
There are 2 cities in Harding County, South Dakota.