9 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Kearns | Salt Lake County | 38,455 |
| Kaysville | Davis County | 32,887 |
| Kanab | Kane County | 5,598 |
| Kamas | Summit County | 2,167 |
| Kanosh | Millard County | 515 |
| Kanarraville | Iron County | 497 |
| Koosharem | Sevier County | 307 |
| Kingston | Piute County | 137 |
| Kenilworth | Carbon County | 74 |