Founded in August 17, 1914, Wibaux County is one of 56 counties in the state of Montana. Historically, Wibaux County was formed from Dawson County, Fallon County, and Richland County. The city of Wibaux is the county seat. With FIPS code of 109, Wibaux County has a population of 934 and area of 889 square miles (2,302 km2).
List of all cities in Wibaux County, MT alphabetically
| City/Town | Postal Code | Area Code |
| Wibaux, MT | 59353 | 406 |