Montana Gazetteer
| Name | County | Total Population | |
|---|---|---|---|
| 1. | City of Billings | Yellowstone | 119,917 |
| 2. | City of Missoula | Missoula | 75,135 |
| 3. | City of Great Falls | Cascade | 60,872 |
| 4. | City of Bozeman | Gallatin | 56,465 |
| 5. | Butte-Silver Bow | Silver Bow | 34,775 |
| 6. | City of Helena | Lewis and Clark | 32,201 |
| 7. | City of Kalispell | Flathead | 25,030 |
| 8. | City of Belgrade | Gallatin | 11,254 |
| 9. | Helena Valley Southeast Census Designated Place | Lewis and Clark | 9,624 |
| 10. | Anaconda-Deer Lodge County | Deer Lodge | 9,550 |
| 11. | City of Havre | Hill | 9,449 |
| 12. | Helena Valley West Central Census Designated Place | Lewis and Clark | 9,001 |
| 13. | City of Livingston | Park | 8,408 |
| 14. | Evergreen Census Designated Place | Flathead | 8,381 |
| 15. | City of Miles City | Custer | 8,313 |
| 16. | City of Whitefish | Flathead | 8,184 |
| 17. | City of Laurel | Yellowstone | 7,554 |
| 18. | Lockwood Census Designated Place | Yellowstone | 7,320 |
| 19. | City of Sidney | Richland | 6,572 |
| 20. | Four Corners Census Designated Place | Gallatin | 6,317 |
