Of 64 counties in the Mile High State, Washington County ranks 12th in terms of size (2,523 square miles). Washington County is in Northeast Colorado. A recent survey of Land Network data totals about 1,000 acres of equestrian property for sale in Colorado's Washington County, which is valued at a combined $159,900. 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 farms.