| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Gettysburg | 1 | 1,038 | 1,103 | -1.05% | 540 | 2 | City |
| Hoven | 2 | 350 | 380 | -1.41% | 1,144 | 0 | Town |
| Tolstoy | 3 | 37 | 39 | -2.63% | 202 | 0 | Town |
| Lebanon | 4 | 31 | 33 | -3.13% | 58 | 1 | Town |
Gettysburg is the largest city in Potter County, with a population of 1,038.
Lebanon is the smallest city in Potter County, with a population of 31.
There are 4 cities in Potter County, South Dakota.