Staten Island pron.: /ˌstætən ˈaɪlənd/ is one of the five boroughs of New York City, located in the southwest part of the city. Staten Island is separated from New Jersey by the Arthur Kill and the Kill Van Kull, and from the rest of New York by New York Bay. With a population of 468,730, Staten Island is the least populated of the boroughs but is the third-largest in area at 59 sq mi (153 km²).