Grays Harbor County is in Olympic Peninsula Washington. Of the 39 counties in the Evergreen State, 2,223-square-mile Grays Harbor County ranks 13th by size. There is around 1,000 acres of timberland for sale in Grays Harbor County, Washington, based on recent Land Network data. The combined market value of land and rural real estate for sale here is approximately $3 million. The average price of planted forestland for sale in Grays Harbor County was $671,000. Browse all Washington forest and timberland for sale on the Land Network to find the right timberland acreage for your commercial or individual investment needs.