The value of all land and rural real estate for sale in Garfield County recently was around $5 million, representing a combined 715 acres of land for sale in Garfield County. Garfield County ranks 37th out of 39 counties in the Evergreen State for the combined amount of land currently advertised for sale. Of all locations in Garfield County with farms and ranches for sale, Pomeroy had 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 Washington's 33rd biggest county (718 square miles). It's located in the Eastern Washington region of Washington.