A total of nearly 1,000 acres were listed for sale in Garfield County recently, representing a total value of around $3 million in Garfield County farms, ranches, hunting land and other land for sale. Garfield County ranks 38th out of 39 counties in the Evergreen State for the combined amount of land currently advertised 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 largest county (718 square miles). It's located in the Eastern Washington region of Washington.