Of 39 counties in the Evergreen State, San Juan County ranks 36th in terms of size (620 square miles). San Juan County is in Puget Sound Washington. Washington's San Juan County has around 1,000 acres of lakefront property for sale based on recent Land Network data. The combined market value of land and rural real estate for sale here was around $2 million. Browse all waterfront property for sale in San Juan 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 San Juan County is residential property.