Valley County Post Offices

101 Missouri Ave
Fort Peck, Montana 59223

432 5th St
Frazer, Montana 59225

605 2nd Ave S Ste 102
Glasgow, Montana 59230

217 Montana St
Hinsdale, Montana 59241

1005 Front St
Nashua, Montana 59248

102 Main St
Opheim, Montana 59250

74 Main St
Richland, Montana 59260

Valley County

There are 7 US Post Offices in Valley County serving a total of 6,897 residents equating to 985 residents per post office. It's estimated that approximately 11,008 packages are handled across the 7 county post offices annually. Valley County is a county located in the U.S. state of Montana. Valley County was created from the division of Dawson County in 1893. As of the 2010 census, the population was 7,369. Its county seat is Glasgow. It is located on the Canada\u2013United States border with Saskatchewan."