Located in Southeast Montana, 5,016-square-mile Big Horn County is one of the ten biggest counties in the Treasure State. Recent listings of residential land for sale in Montana's Big Horn County totals approximately 1,000 acres and a combined market value of $5 million. The most common type of land for sale by combined acreage in Big Horn County is house. The average price of residential acreage for sale in Big Horn County was $480,770. Browse all residential land and rural property for sale in Montana to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.