12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Richfield | 1 | 8,342 | 8,156 | 0.45% | 1,364 | 6.12 | City |
| Monroe | 2 | 2,797 | 2,516 | 2.04% | 783 | 3.57 | City |
| Salina | 3 | 2,672 | 2,472 | 1.52% | 456 | 5.85 | City |
| Aurora | 4 | 1,068 | 992 | 1.43% | 1,153 | 0.93 | City |
| Annabella | 5 | 901 | 840 | 1.35% | 1,382 | 0.65 | Town |
| Elsinore | 6 | 898 | 832 | 1.47% | 341 | 2.64 | Town |
| Redmond | 7 | 826 | 768 | 1.47% | 882 | 0.94 | Town |
| Central Valley | 8 | 698 | 650 | 1.45% | 331 | 2.11 | Town |
| Glenwood | 9 | 505 | 465 | 1.61% | 971 | 0.52 | Town |
| Sigurd | 10 | 441 | 406 | 1.61% | 413 | 1.07 | Town |
| Joseph | 11 | 315 | 289 | 1.61% | 362 | 0.87 | Town |
| Koosharem | 12 | 307 | 314 | -0.33% | 368 | 0.83 | Town |
Richfield is the largest city in Sevier County, with a population of 8,342.
Koosharem is the smallest city in Sevier County.
There are 12 cities in Sevier County, Utah.