A combined approximately 1,000 acres were listed for sale in San Juan County, Washington, recently; the combined value of all San Juan County farms, ranches, hunting land and other land for sale was approximately $20 million. San Juan County ranks 38th in Washington for the total number of acres of land currently advertised for sale. Among cities in San Juan County with land for sale, Friday Harbor featured the most land for sale. Based on its natural assets, San Juan County's economy is dependent on tourism and recreation. San Juan County is Washington's 36th biggest county (620 square miles). It's located in the Puget Sound Washington region of Washington.