New York city (1990 pop. 7,322,564), land area 309 sq mi (801 sq km), SE N.Y., largest city in the United States and one of the largest in the world, on New York Bay at the mouth of the Hudson River. It comprises five boroughs, each coextensive with a county: Manhattan (New York co.), the heart of the city, an island; the Bronx (Bronx co.), on the mainland, NE of Manhattan and separated from it by the Harlem River; Queens (Queens co.), on Long Island, E of Manhattan across the East River; Brooklyn (Kings co.), also on Long Island, on the East River adjoining Queens and on New... Read more