Yellowstone County is in Southeast Montana. Of the 56 counties in the Treasure State, 2,648-square-mile Yellowstone County ranks 23rd by size. A recent survey of Land Network data totals around 20,000 acres of farms for sale in Montana's Yellowstone County, which is valued at a combined $57 million. The average price of farmland for sale in Yellowstone County was $5 million. Farms for sale in Yellowstone County feature livestock including cattle, horses, sheep, goats and pig. Browse all Montana farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future business or lifestyle needs.