Of eight counties in the Constitution State, Windham County is sixth in terms of its size (521 square miles). Windham County is in Mystic Country Connecticut. The total value of nearly 1,000 acres of farms recently listed for sale in Windham County, Connecticut, was around $1 million. Browse all Windham County 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 individual needs. The most common type of land for sale by combined acreage in Windham County is house.