Of 36 counties in the Union State, Umatilla County ranks eighth by size (3,231 square miles). Umatilla County is in Eastern Oregon. There is around 1,000 acres of horse properties for sale in Oregon's Umatilla County based on recent Land Network data. The combined market value of farms, ranches, hunting land and other land for sale here is almost $900,000. Browse all Umatilla County horse farms for sale on the Land Network to find the equestrian property that's right for your future needs, whether you're a horse breeder, equestrian business or simply horse lover looking for stable facilities, grooming pens or grazing pasture for your own horses. The most common type of land for sale by combined acreage in Umatilla County is residential property.