| City | County | 2026 Pop. ↓ |
|---|---|---|
| Pocatello | Bannock County | 59,205 |
| Post Falls | Kootenai County | 48,338 |
| Payette | Payette County | 8,952 |
| Preston | Franklin County | 6,311 |
| Parma | Canyon County | 2,228 |
| Ponderay | Bonner County | 2,196 |
| Priest River | Bonner County | 1,891 |
| Paul | Minidoka County | 1,853 |
| Pinehurst | Shoshone County | 1,803 |
| Plummer | Benewah County | 1,156 |
| Potlatch | Latah County | 804 |
| Paris | Bear Lake County | 543 |
| Pierce | Clearwater County | 529 |
| Parker | Fremont County | 288 |
| Peck | Nez Perce County | 175 |
| Parkline | Benewah County | 76 |
| Placerville | Boise County | 48 |
| Princeton | Latah County | 2 |