A combined around 1,000 acres were listed for sale in Washington's Garfield County recently; the overall value of all Garfield County land for sale was approximately $4 million. Garfield County ranks 38th out of 39 counties in the state for the total number of acres of land currently advertised for sale. Of all land for sale in Garfield County, Pomeroy had the most land for sale. Government and state-level services are the main economic drivers in Garfield County. Garfield County is Washington's 33rd largest county (718 square miles). It's located in the Eastern Washington region of the state.