Of 56 counties in the Treasure State, Treasure County ranks 53rd in terms of size (984 square miles). Treasure County is in Southeast Montana. Treasure County, Montana, includes nearly 1,000 acres of recreational land and property for sale based on recent Land Network data. The combined market value of ranches, farms, hunting land and other rural land and acreage for sale here was $2 million. Browse all recreational property for sale in Treasure County to find the recreational tract that suits your lifestyle needs, from hunting and fishing properties for the outdoor enthusiast to undeveloped acreage ready for future residential-property development. The most common type of land for sale by combined acreage in Treasure County is house.