Grays Harbor County is in Olympic Peninsula Washington. Of the 39 counties in the Evergreen State, 1 million-acre Grays Harbor County ranks 13th by size. Recent listings of timberland for sale in Grays Harbor County, Washington, totals nearly 1,000 acres and a combined market value of nearly $3 million. By overall acreage, undeveloped land is the most common type of land for sale in Grays Harbor County. The average price of planted forestland for sale in Grays Harbor County was $656,780. 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.