Sutton Island, in Hancock County

Hancock County, Maine

Hancock County is a county located in the U.S. state of Maine. As of 2010, the population was 54,418. Its county seat is Ellsworth. It was incorporated on June 25, 1789...

, Maine

Maine

Maine is a state in the New England region of the northeastern United States, bordered by the Atlantic Ocean to the east and south, New Hampshire to the west, and the Canadian provinces of Quebec to the northwest and New Brunswick to the northeast. Maine is both the northernmost and easternmost...

, is a small, private island south of Mount Desert Island

Mount Desert Island

Mount Desert Island , in Hancock County, Maine, is the largest island off the coast of Maine. With an area of it is the 6th largest island in the contiguous United States. Though it is often claimed to be the third largest island on the eastern seaboard of the United States, it is actually second...

, and north of Cranberry Isles, Maine

Cranberry Isles, Maine

Cranberry Isles is a town in Hancock County, Maine, United States. The population was 128 at the 2000 census.-Geography:According to the United States Census Bureau, the town has a total area of , of which, of it is land and of it is water....

. Its dimensions are roughly 2.1 km on its east-west axis by 1.1km north to south.
It has a negligible permanent population, but is the site of many summer homes. The island has no roads, bridge to the mainland, nor airstrip. It is primarily accessed by mail boat from Northeast Harbor or by ferry

Ferry

A ferry is a form of transportation, usually a boat, but sometimes a ship, used to carry primarily passengers, and sometimes vehicles and cargo as well, across a body of water. Most ferries operate on regular, frequent, return services...

 or water taxi from Southwest Harbor, Maine

Southwest Harbor, Maine

Southwest Harbor is a town in Hancock County, Maine, United States. Located on Mount Desert Island, the population was 1,966 at the 2000 census.-Geography:...

.

The island received international attention due to its unorthodox mail delivery service, halted in the summer of 2008.
There is a cemetery on Sutton Island.
There are osprey

Osprey

The Osprey , sometimes known as the sea hawk or fish eagle, is a diurnal, fish-eating bird of prey. It is a large raptor, reaching more than in length and across the wings...

on the island, including a nest on its NW shore that has been there for decades. All visitors are warned to be respectful of these rare birds and their offspring.