Land for sale in Ferry County, Washington, recently totaled $38 million and 6,000 acres. Ferry County ranks 17th out of 39 counties in the Evergreen State for the combined amount of land currently advertised for sale. Of all locations in Ferry County with farms, ranches, hunting land and other land for sale, Republic had the most land for sale. Government and state-level services are the main economic drivers in Ferry County. Ferry County is the 12th biggest county (2,257 square miles) in Washington. It's located in the Eastern Washington region of the state.