Post Offices in Missoula, Montana, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Hellgate Post Office No Reviews Favorite Phone: (406) 329-2222Retail Hours Missoula Post Office No Reviews Favorite Fax: (406) 329-2280Phone: (406) 329-2270Retail Hours Mullan Post Office No Reviews Favorite Fax: (406) 728-6531Phone: (406) 728-5535Retail Hours