Located in Southeast Maine, 3,257-square-mile Washington County is one of the ten biggest counties in the Pine Tree State. Recent listings of undeveloped land for sale in Washington County, Maine, totals nearly 4,000 acres and a combined market value of nearly $21 million. By overall acreage, house is the most common type of land for sale in Washington County. The average price of undeveloped land for sale in Washington County was $137,868. Some suggested uses for undeveloped land currently for sale in Washington County include for hunting/fishing, commercial, and homestead use. Some common wildlife species to be found on undeveloped land for sale in Washington County include turkey, grouse, bear, moose, whitetail deer and deer. Current commercial applications for commercial property for sale in Washington County include for hunting/fishing, commercial and homestead use. Browse all Maine undeveloped acreage for sale on the Land Network to find your next commercial property or land investment.