Founded in May 27, 1914, Richland County is one of 56 counties in the state of Montana. Historically, Richland County was formed from Dawson County. The city of Sidney is the county seat. With FIPS code of 83, Richland County has a population of 11,283 and area of 2,084 square miles (5,398 km2).
List of all cities in Richland County, MT alphabetically
| City/Town | Postal Code | Area Code |
| Crane, MT | 59217 | 406 |
| Enid, MT | 59243 | 406 |
| Fairview, MT | 59221 | 406 |
| Lambert, MT | 59243 | 406 |
| Savage, MT | 59262 | 406 |
| Sidney, MT | 59270 | 406 |