Which Island is in the Town of Southold in Suffolk County, New York in the United States Plum Island or Block Island Sound?
Block Island Sound Block Island Sound is a strait in the open Atlantic Ocean, approximately 10 mi wide, separating Block Island from the coast of mainland Rhode Island in the United States. On the west, it extends to Montauk Point on the eastern tip of Long Island, as well as Plum Island, Gardiners Island, and Fishers Island, all in the state of New York.
New Suffolk, New York New Suffolk is a census-designated place (CDP) that roughly corresponds to the hamlet by the same name in the Town of Southold in Suffolk County, New York, United States. The CDP's population was 349 at the 2010 census.