12 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Richfield | 1 | 8,416 | 8,157 | 0.51% | 1,376 | 6 | City |
| Monroe | 2 | 2,808 | 2,517 | 1.78% | 786 | 4 | City |
| Salina | 3 | 2,678 | 2,473 | 1.29% | 457 | 6 | City |
| Aurora | 4 | 1,080 | 999 | 1.31% | 1,166 | 1 | City |
| Annabella | 5 | 908 | 841 | 1.23% | 1,393 | 1 | Town |
| Elsinore | 6 | 905 | 835 | 1.34% | 343 | 3 | Town |
| Redmond | 7 | 828 | 768 | 1.22% | 885 | 1 | Town |
| Central Valley | 8 | 699 | 650 | 1.16% | 332 | 2 | Town |
| Glenwood | 9 | 505 | 466 | 1.41% | 971 | 1 | Town |
| Sigurd | 10 | 443 | 406 | 1.37% | 414 | 1 | Town |
| Joseph | 11 | 315 | 288 | 1.61% | 362 | 1 | Town |
| Koosharem | 12 | 308 | 314 | -0.32% | 324 | 1 | Town |
Richfield is the largest city in Sevier County, with a population of 8,416.
Koosharem is the smallest city in Sevier County, with a population of 308.
There are 12 cities in Sevier County, Utah.