Which Island is in the Town of Southold in Suffolk County, New York in the United States Plum Island or Block Island Sound?
Plum Island (New York) Plum Island is an island in the Town of Southold in Suffolk County, New York in the United States. The island is situated in Gardiners Bay, east of Orient Point, off the eastern end of the North Fork coast of Long Island. It is about 3 mi long and 1 mi wide at its widest point.
Holy Island, Massachusetts Holy Island is a marshy island located off the northeast coast of Massachusetts, north of Cape Ann. The island is situated immediately west of Plum Island and is part of the Town of Ipswich in Essex County. The Rowley River runs by the island, which is the northernmost of four marshy islands.