Founded in February 7, 1893, Teton County is one of 56 counties in the state of Montana. Historically, Teton County was formed from Chouteau County. The city of Choteau is the county seat. With FIPS code of 99, Teton County has a population of 6,269 and area of 2,273 square miles (5,887 km2).
List of all cities in Teton County, MT alphabetically
| City/Town | Postal Code | Area Code |
| Bynum, MT | 59419 | 406 |
| Choteau, MT | 59422 | 406 |
| Dutton, MT | 59433 | 406 |
| Fairfield, MT | 59436 | 406 |
| Golden Ridge, MT | 59436 | 406 |
| Pendroy, MT | 59467 | 406 |
| Power, MT | 59468 | 406 |