Of 39 counties in the Evergreen State, Thurston County ranks 32nd by size (774 square miles). Thurston County is in Olympic Peninsula Washington. Recent Land Network data records almost 2,000 acres of riverfront property for sale in Washington's Thurston County, which is valued at a combined $50 million. Browse all waterfront property for sale in Thurston County on the Land Network to find the marina, lakefront and other recreational property that meets your needs, from waterside land perfect as a retirement investment to existing residential waterfront land and property for hunting, fishing and other outdoor-recreation pursuits! The most common type of land for sale by combined acreage in Thurston County is house.