The overall value of farms, ranches, hunting land and other land for sale in Montana's Powder River County recently on Land.com was almost $26 million. This represents almost 100,000 acres of land for sale in Powder River County. Powder River County ranks 45th in Montana for the total acreage of land currently advertised for sale. Broadus featured the most land for sale. Based on its natural assets, tourism and recreation are important factors in the Powder River County economy. Powder River County is Montana's 16th biggest county (3,298 square miles). It's located in the Southeast Montana region of the state.