13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ephraim | 1 | 6,431 | 5,623 | 2.58% | 1,435 | 4.48 | City |
| Mount Pleasant | 2 | 4,008 | 3,665 | 1.75% | 1,370 | 2.93 | City |
| Manti | 3 | 3,777 | 3,446 | 1.78% | 1,173 | 3.22 | City |
| Gunnison | 4 | 3,689 | 3,519 | 0.93% | 770 | 4.79 | City |
| Moroni | 5 | 1,702 | 1,552 | 1.79% | 1,598 | 1.06 | City |
| Centerfield | 6 | 1,470 | 1,342 | 1.8% | 770 | 1.91 | Town |
| Fairview | 7 | 1,329 | 1,209 | 1.84% | 1,055 | 1.26 | City |
| Fountain Green | 8 | 1,325 | 1,202 | 1.92% | 1,062 | 1.25 | City |
| Spring City | 9 | 1,047 | 947 | 1.95% | 744 | 1.41 | City |
| Mayfield | 10 | 617 | 559 | 1.98% | 686 | 0.90 | Town |
| Wales | 11 | 376 | 341 | 1.9% | 949 | 0.40 | Town |
| Sterling | 12 | 307 | 276 | 1.99% | 950 | 0.32 | Town |
| Fayette | 13 | 269 | 248 | 1.51% | 681 | 0.40 | Town |
Ephraim is the largest city in Sanpete County, with a population of 6,431.
Fayette is the smallest city in Sanpete County.
There are 13 cities in Sanpete County, Utah.