Land for sale in Powder River County recently totaled $30 million and 100,000 acres. Powder River County ranks 47th based on the total amount of acres of land for sale of the 56 counties in the Treasure State. Of all farms, ranches, hunting land and other land for sale in Powder River County, Broadus had the most land for sale. Based on its natural assets, tourism and recreation are important contributors to the Powder River County economy. Powder River County is the 16th biggest county (3,298 square miles) in Montana. It's located in the Southeast Montana region of the state.