Fire Island is the large center island of the outer barrier islands parallel to the South Shore of Long Island in the U.S. state of New York. Occasionally, the name is used to refer collectively to not only the central island, but also Long Beach Barrier Island, Jones Beach Island, and Westhampton Island, since the straits that separate these islands ar…Fire Island is the large center island of the outer barrier islands parallel to the South Shore of Long Island in the U.S. state of New York. Occasionally, the name is used to refer collectively to not only the central island, but also Long Beach Barrier Island, Jones Beach Island, and Westhampton Island, since the straits that separate these islands are ephemeral. In 2012, Hurricane Sandy once again divided Fire Island into two islands. Together, these two islands are about 31 miles long and vary between 520 and 1,310 feet wide. The land area of Fire Island is 9.6 square miles.