Of 67 counties in the Independence State, Washington County ranks 20th in terms of size (860 square miles). Washington County is in Pittsburgh & Countryside Pennsylvania. A recent survey of Land Network data includes about 1,000 acres of equestrian property for sale in Pennsylvania's Washington County, which is valued at a combined $499,000. Browse all Washington 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 Washington County is house.