Located in Missouri River Country Montana, 4,849-square-mile Garfield County is one of the ten biggest counties in Big Sky Country. Recent listings of residential land for sale in Montana's Garfield County totals roughly 1,000 acres and a combined market value of nearly $2 million. The most common type of land for sale by combined acreage in Garfield County is house. The average price of residential land for sale in Garfield County was $296,666. The economy here is principally agricultural. 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.