2 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Buffalo | 1 | 356 | 347 | 0.56% | 643 | 1 | Town |
| Camp Crook | 2 | 72 | 59 | 2.86% | 518 | 0 | Town |
Buffalo is the largest city in Harding County, with a population of 356.
Camp Crook is the smallest city in Harding County, with a population of 72.
There are 2 cities in Harding County, South Dakota.