18 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Pocatello | Bannock County | 59,149 |
| Post Falls | Kootenai County | 48,494 |
| Payette | Payette County | 8,932 |
| Preston | Franklin County | 6,434 |
| Ponderay | Bonner County | 2,391 |
| Parma | Canyon County | 2,185 |
| Paul | Minidoka County | 2,076 |
| Priest River | Bonner County | 1,894 |
| Pinehurst | Shoshone County | 1,846 |
| Plummer | Benewah County | 1,176 |
| Potlatch | Latah County | 807 |
| Pierce | Clearwater County | 560 |
| Paris | Bear Lake County | 555 |
| Parker | Fremont County | 296 |
| Peck | Nez Perce County | 175 |
| Princeton | Latah County | 149 |
| Parkline | Benewah County | 56 |
| Placerville | Boise County | 49 |