Cities and Towns in Gallatin County, Montana
Founded in February 2, 1865, Gallatin County is one of 56 counties in the state of Montana. Historically, Gallatin County was one of the 9 original counties. The city of Bozeman is the county seat. With FIPS code of 31, Gallatin County has a population of 122,713 and area of 2,507 square miles (6,493 km²).
List of all cities in Gallatin County, MT alphabetically
| City/Town | Postal Code | Area Code |
| Amsterdam, MT | 59741 | 406 |
| Belgrade, MT | 59714 | 406 |
| Big Sky, MT | 59716 | 406 |
| Bozeman, MT | 59715 | 406 |
| 59717 | 406 | |
| 59718 | 406 | |
| 59719 | 406 | |
| 59771 | 406 | |
| 59772 | 406 | |
| Gallatin Gateway, MT | 59730 | 406 |
| Gallatin Gtwy, MT | 59730 | 406 |
| Manhattan, MT | 59741 | 406 |
| Montana State University Bozeman, MT | 59717 | 406 |
| Three Forks, MT | 59752 | 406 |
| Trident, MT | 59752 | 406 |
| West Yellowstone, MT | 59758 | 406 |
| Willow Creek, MT | 59760 | 406 |
