Washington County is in Green Country Oklahoma. Of the 77 counties in the Sooner State, 424-square-mile Washington County ranks 77th by size. A recent survey of Land Network data totals about 2,000 acres of recreational land for sale in Oklahoma's Washington County, which is valued at a combined $6 million. The average price of recreational property for sale in Washington County was $2 million. Browse all recreational property for sale in Oklahoma 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.