San Juan County is in Puget Sound Washington. Of the 39 counties in the state, San Juan County ranks 36th in terms of size (397,310 acres). Recent listings of residential land and property for sale in Washington's San Juan County totals approximately 1,000 acres and a combined market value of around $46 million. By overall acreage, residential property is the most common type of land for sale in San Juan County. The average price of residential acreage for sale in San Juan County was $3 million. Browse all residential land and rural property for sale in Washington to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.