Jefferson County is in Olympic Peninsula Washington. Of the 39 counties in the Evergreen State, Jefferson County ranks 15th in terms of size (1 million acres). Recent listings of residential land for sale in Jefferson County, Washington, totals 1,000 acres and a combined market value of around $27 million. By overall acreage, residential property is the most common type of land for sale in Jefferson County. The average price of residential acreage for sale in Jefferson County was $1 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.