Fixed-route public bus service in Hancock County. Areas served by fixed-route bus include Ellsworth, all of Mount Desert Island, the Blue Hill peninsula including Brooklin, Sedgwick, Deer Isle and Stonington, the northern Hancock County town of Otis, the coastal towns of Hancock, Sullivan, Gouldsboro and Winter Harbor in eastern Hancock County, and the Town of Bucksport in western Hancock County.

The Island Explorer features eight bus routes linking hotels, inns, and campgrounds with destinations in Acadia National Park and neighboring village centers. Clean propane-powered vehicles offer Mount Desert Island visitors and residents free transportation to hiking trails, carriage roads, island beaches, and in-town shops.

West's Transportation is a private for-profit corporation that provides fixed-route and demand response public transportation service to communities within Washington county and eastern portions of Hancock County. Intercity service is provided between Calais and Bangor (named Coastal Connection) with stops in Washington and Hancock Counties along the way.