Of 36 counties in the Beaver State, Washington County is 31st in terms of its size (726 square miles). Washington County is in Portland Metro Oregon. The total value of around 1,000 acres of recreational land and property recently listed for sale in Washington County, Oregon, was almost $300,000. Browse all recreational property for sale in Washington County to find the recreational tract that suits your lifestyle needs, from hunting and fishing properties for the outdoor enthusiast to undeveloped acreage ready for future residential-property development. The most common type of land for sale by combined acreage in Washington County is residential property.