Sutton Island, in Hancock County, Maine, is a small, private island south of Mount Desert Island, and north of Cranberry Isles, Maine. Its dimensions are roughly 2.1 km on its east-west axis by 1.1 km north to south. It has a negligible permanent population, but is the site of several summer homes. For nearly fifty years, Harvard University owned two properties on the island, but sold them in light of mounting maintenance costs. The island has no roads, bridge to the mainland, nor airstrip. It is primarily accessed by mail boat from Northeast Harbor or by ferry or water taxi from Southwest Harbor, Maine.