There was a combined almost $78 million of farms, ranches, and rural real estate for sale in Montana's Musselshell County recently on Land.com. The total acreage of all Musselshell County farms, ranches, and rural real estate for sale was almost 100,000 acres. Musselshell County ranks 18th based on the combined acreage of land for sale of all the counties in Montana. Among cities in Musselshell County with ranches, farms, hunting land and other rural land and acreage for sale, Roundup featured the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of Montana. Musselshell County is the 35th biggest county (1,871 square miles) in Montana. It's located in the Southeast Montana region of the state.