Located in Eastern Oregon, 3,231-square-mile Umatilla County is one of the ten biggest counties in the Union State. The total value of almost 4,000 acres of farms recently listed for sale in Umatilla County, Oregon, was about $22 million. The average price of farmland for sale in Umatilla County was $2 million. Farms for sale in Umatilla County support livestock including cattle, horses, sheep, goats and pig. Browse all Oregon 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 individual needs.