17 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Bountiful | Davis County | 44,646 |
| Brigham City | Box Elder County | 20,637 |
| Bluffdale | Utah County | 20,409 |
| Beaver | Beaver County | 3,822 |
| Blanding | San Juan County | 3,132 |
| Benson | Cache County | 1,951 |
| Ballard | Duchesne County | 1,351 |
| Bear River City | Box Elder County | 913 |
| Benjamin | Utah County | 585 |
| Big Water | Kane County | 580 |
| Brighton | Salt Lake County | 482 |
| Bryce Canyon City | Garfield County | 357 |
| Bicknell | Wayne County | 327 |
| Bluebell | Duchesne County | 267 |
| Bluff | San Juan County | 254 |
| Boulder | Garfield County | 250 |
| Brian Head | Iron County | 171 |