Yellowstone County is in Southeast Montana. Of the 56 counties in the Treasure State, Yellowstone County is 23rd in terms of its size (2,648 square miles). There is roughly 2,000 acres of residential land for sale in Montana's Yellowstone County based on recent Land Network data. The combined market value of land and rural real estate for sale here is almost $151 million. The average price of residential land for sale in Yellowstone County was $934,939. 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.