The combined value of farms, ranches, hunting land and other land for sale in Valley County, Montana, recently on Land.com was $16 million. This represents around 100,000 acres of land and rural real estate for sale in Valley County. Valley County ranks 43rd in the Treasure State based on the combined acreage of land for sale among all the counties in Montana. Glasgow had the most land for sale. Valley County has a large agricultural economy, with 654 farms recorded in the county during the latest U.S. Census. Farming activities in Valley County generate annual revenues of $7 million, most of which is from crops. Valley County is one of the ten largest counties in Montana (5,061 square miles). It's located in the Missouri River Country Montana region of Montana.