Land for sale in Powder River County recently totaled $15 million and 100,000 acres. Powder River County ranks 48th out of 56 counties in Montana for the total acreage of land currently advertised for sale. Among cities in Powder River County with farms and ranches for sale, Broadus featured the most land for sale. Based on its natural assets, Powder River County's economy is dependent on tourism and recreation. Powder River County is the 16th largest county (3,298 square miles) in Montana. It's located in the Southeast Montana region of Montana.