| City | County | 2026 Pop. ↓ |
|---|---|---|
| Lehi | Utah County | 99,366 |
| Layton | Davis County | 85,883 |
| Logan | Cache County | 56,477 |
| Lindon | Utah County | 12,140 |
| La Verkin | Washington County | 4,563 |
| Lake Point | Tooele County | 3,050 |
| Lewiston | Cache County | 1,945 |
| Liberty | Weber County | 1,351 |
| Lake Shore | Utah County | 1,340 |
| Levan | Juab County | 945 |
| Leeds | Washington County | 856 |
| Loa | Wayne County | 502 |
| Leamington | Millard County | 290 |
| Laketown | Rich County | 285 |
| La Sal | San Juan County | 218 |
| Lyman | Wayne County | 217 |
| Lynndyl | Millard County | 133 |
| Lapoint | Uintah County | 60 |