The Town of East Hampton is located in southeastern Suffolk County, New York, at the eastern end of the South Shore of Long Island. It is the easternmost town in the state of New York. At the time of the United States 2010 Census, it had a total population of 21,457.
The town includes the village of East Hampton, as well as the hamlets of Montauk, Amagansett, Wainscott, and Springs. It also includes part of the incorporated village of Sag Harbor.
East Hampton is located on a peninsula, bordered on the south by the Atlantic Ocean, to the east by Block Island Sound and to the north by Gardiners Bay, Napeague Bay and Fort Pond Bay. To the west is western Long Island, reaching to the East River and New York City. The Town has eight state parks, most located at the water's edge.
The town consists of 70 square miles and stretches nearly 25 miles, from Wainscott in the west to Montauk Point in the east. It is about six miles wide at its widest point and less than a mile at its narrowest point. The town has jurisdiction over Gardiners Island, which is one of the largest privately owned islands in the United States. The town has 70 miles of shoreline.