Montana Gazetteer
| Name | County | Total Population | |
|---|---|---|---|
| 1. | City of Billings | Yellowstone | 122,177 |
| 2. | City of Missoula | Missoula | 77,256 |
| 3. | City of Great Falls | Cascade | 61,373 |
| 4. | City of Bozeman | Gallatin | 60,425 |
| 5. | Butte-Silver Bow | Silver Bow | 35,470 |
| 6. | City of Helena | Lewis and Clark | 33,508 |
| 7. | City of Kalispell | Flathead | 27,559 |
| 8. | City of Belgrade | Gallatin | 12,060 |
| 9. | Helena Valley Southeast Census Designated Place | Lewis and Clark | 9,814 |
| 10. | Anaconda-Deer Lodge County | Deer Lodge | 9,624 |
| 11. | City of Whitefish | Flathead | 9,203 |
| 12. | City of Havre | Hill | 9,192 |
| 13. | Helena Valley West Central Census Designated Place | Lewis and Clark | 9,116 |
| 14. | City of Livingston | Park | 9,073 |
| 15. | Evergreen Census Designated Place | Flathead | 8,833 |
| 16. | City of Miles City | Custer | 8,385 |
| 17. | City of Laurel | Yellowstone | 7,644 |
| 18. | Lockwood Census Designated Place | Yellowstone | 7,382 |
| 19. | Four Corners Census Designated Place | Gallatin | 6,483 |
| 20. | City of Sidney | Richland | 6,379 |
