Land for sale in Valley County recently totaled approximately $14 million and approximately 100,000 acres. Valley County ranks 43rd based on the total amount of acres of land for sale of the 56 counties in Big Sky Country. Of all locations in Valley County with land and rural real estate for sale, Glasgow had the most land for sale. Agriculture and farming drives the Valley County economy, with 654 farms recorded in the county during the U.S. Census in 2012. 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 the state.