Washington County is in Green Country Oklahoma. Of the 77 counties in the Sooner State, 424-square-mile Washington County ranks 77th by size. Recent listings of horse properties for sale in Washington County, Oklahoma, totals 1,000 acres and a combined market value of roughly $2 million. The most common type of land for sale by combined acreage in Washington County is residential property. The average price of equestrian property for sale in Washington County was $702,000. Other wildlife to be found on Washington County equestrian property for sale includes whitetail deer, turkey, pig, deer and dove. Browse all Oklahoma 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.