Powder River County Post Offices

218 S State Highway 59
Biddle, Montana 59314

202 N Lincoln St
Broadus, Montana 59317

268 Otter Creek Rd
Otter, Montana 59062

Powder River County

There are 3 US Post Offices in Powder River County serving a total of 1,311 residents equating to 437 residents per post office. It's estimated that approximately 2,093 packages are handled across the 3 county post offices annually. Powder River County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 1,743. Its county seat is Broadus.