Note: Australia is generally considered to be a continental landmass, rather than an island. If however one does count Australia among the islands it, not Greenland, would be the largest in the world (unless one also considered Antarctica an island).
... is located at 40°56'40" North, 72°34'38" West (40.944347, -72.577131)1.
According to the United States Census Bureau, the town has a total area of 20.0 km² ...