Adams County is in Eastern Washington. Of the 39 counties in the Evergreen State, 1,929-square-mile Adams County ranks 17th by size. The total value of nearly 1,000 acres of residential land and property recently listed for sale in Adams County, Washington, was nearly $8 million. The average price of residential acreage for sale in Adams County was $511,075. The county has a rural, farm-based economy. 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.