Founded in January 15, 1869, Dawson County is one of 56 counties in the state of Montana. Historically, Dawson County was formed from unorganized lands. The city of Glendive is the county seat. With FIPS code of 21, Dawson County has a population of 8,904 and area of 2,373 square miles (6,146 km2).
List of all cities in Dawson County, MT alphabetically
| City/Town | Postal Code | Area Code |
| Bloomfield, MT | 59315 | 406 |
| Glendive, MT | 59330 | 406 |
| Lindsay, MT | 59339 | 406 |
| Richey, MT | 59259 | 406 |