The value of land for sale in Washington's Garfield County recently on Land.com was $5 million. This represents approximately 1,000 acres of farms and ranches for sale in Garfield County. Garfield County ranks 37th in the Evergreen State for the total acreage of land currently advertised for sale. Pomeroy featured the most land for sale. From an economic perspective, government and state-level services contribute most to Garfield County's overall GDP. Garfield County is the 33rd largest county (718 square miles) in Washington. It's located in the Eastern Washington region of the state.