Founded in February 9, 1897, Broadwater County is one of 56 counties in the state of Montana. Historically, Broadwater County was formed from Jefferson County and Meagher County. The city of Townsend is the county seat. With FIPS code of 7, Broadwater County has a population of 7,288 and area of 1,192 square miles (3,087 km2).
List of all cities in Broadwater County, MT alphabetically
| City/Town | Postal Code | Area Code |
| Radersburg, MT | 59641 | 406 |
| Toston, MT | 59641 | 406 |
| 59643 | 406 | |
| Townsend, MT | 59644 | 406 |
| Winston, MT | 59647 | 406 |