Staten Islan (pronounced /ˌstætənˈaɪlənd/) is a borough of New York City situated primarily on the island of the same name. It is separated from New Jersey by the Arthur Kill and the Kill Van Kull tidal straits, and from the rest of New York by New York Bay. With a population of about 477,377, Staten Island is the least populated of the five boroughs but is the third largest in area at 59 sq mi (153 km²).