Located in Cascade Range Washington, 2,332-square-mile Kittitas County is one of the ten biggest counties in the Evergreen State. Kittitas County, Washington, includes almost 1,000 acres of residential land for sale based on recent Land Network data. The combined market value of ranches, farms, hunting land and other rural land and acreage for sale here was about $30 million. The average price of residential acreage for sale in Kittitas 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.