9 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Kearns | Salt Lake County | 40,063 |
| Kaysville | Davis County | 33,305 |
| Kanab | Kane County | 5,435 |
| Kamas | Summit County | 2,154 |
| Kanarraville | Iron County | 506 |
| Kanosh | Millard County | 502 |
| Koosharem | Sevier County | 309 |
| Kingston | Piute County | 134 |
| Kenilworth | Carbon County | 74 |