South Gouldsboro, ME

ZIP code 04678 serves Sullivan, a coastal town in Hancock County, Maine. Its notable natural landmarks include Sullivan Harbor and Taunton Bay, whose shoreline and tidal waters shape the local landscape. Inland, Tunk Mountain is a prominent hiking destination within the Donnell Pond Public Lands area. The town is also crossed by U.S. Route 1, a major coastal route connecting communities along Maine’s eastern shore.