Gallatin County is in Yellowstone Country Montana. Of the 56 counties in the state, Gallatin County is 24th in terms of its size (2,633 square miles). Recent Land Network data includes nearly 3,000 acres of farms for sale in Montana's Gallatin County, which is valued at a combined $51 million. The average price of farmland for sale in Gallatin County was $4 million. Farms for sale in Gallatin County sustain 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 commercial or lifestyle needs.