| # | City | Population | Type |
|---|---|---|---|
| 1 | Boise City | 237,963 | City |
| 2 | Meridian | 139,740 | City |
| 3 | Nampa | 117,350 | City |
| 4 | Caldwell | 73,088 | City |
| 5 | Idaho Falls | 69,523 | City |
| 6 | Pocatello | 58,231 | City |
| 7 | Coeur d'Alene | 57,355 | City |
| 8 | Twin Falls | 55,589 | City |
| 9 | Post Falls | 45,800 | City |
| 10 | Rexburg | 40,695 | City |