New York City, the most populous city in the United States, is composed of five boroughs: The Bronx, Brooklyn, Manhattan, Queens, and Staten Island. Each borough is coextensive with a respective county of New York State. The boroughs of Queens and the Bronx are also Queens County and Bronx County. The other three counties are named differently from their boroughs: Manhattan is New York County, Brooklyn is Kings County, and Staten Island is Richmond County.