Washington County is in Pittsburgh & Countryside Pennsylvania. Of the 67 counties in the Keystone State, Washington County ranks 20th in terms of size (860 square miles). Recent listings of farms for sale in Washington County, Pennsylvania, totals about 2,000 acres and a combined market value of about $27 million. The most common type of land for sale by combined acreage in Washington County is house. The average price of farmland for sale in Washington County was $367,905. Farms for sale in Washington County support livestock including horses, cattle, pig, sheep and goats. Browse all Pennsylvania farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future business or lifestyle needs.