City | Rank | County | 2024 Pop. |
|---|---|---|---|
| Twin Falls | 1 | Twin Falls County | 55,896 |
| Jerome | 2 | Jerome County | 13,388 |
| Hailey | 3 | Blaine County | 10,029 |
| Kimberly | 4 | Twin Falls County | 5,595 |
| Buhl | 5 | Twin Falls County | 4,764 |
| Gooding | 6 | Gooding County | 3,830 |
| Ketchum | 7 | Blaine County | 3,627 |
| Wendell | 8 | Gooding County | 3,038 |
| Filer | 9 | Twin Falls County | 3,015 |
| Bellevue | 10 | Blaine County | 2,578 |
| Sun Valley | 11 | Blaine County | 1,764 |
| Shoshone | 12 | Lincoln County | 1,747 |
| Hansen | 13 | Twin Falls County | 1,119 |
| Hagerman | 14 | Gooding County | 994 |
| Hazelton | 15 | Jerome County | 815 |
| Fairfield | 16 | Camas County | 502 |
| Richfield | 17 | Lincoln County | 480 |
| Eden | 18 | Jerome County | 404 |
| Gannett | 19 | Blaine County | 369 |
| Dietrich | 20 | Lincoln County | 308 |
| Hollister | 21 | Jerome County | 271 |
| Bliss | 22 | Gooding County | 267 |
| Castleford | 23 | Twin Falls County | 229 |
| Murtaugh | 24 | Twin Falls County | 122 |