Yellowstone County is in Southeast Montana. Of the 56 counties in the state, 2 million-acre Yellowstone County ranks 23rd by size. A recent survey of Land Network data shows almost 2,000 acres of residential land for sale in Montana's Yellowstone County, which is valued at a combined $147 million. The average price of residential acreage for sale in Yellowstone County was $853,992. 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.