The Bronx is New York City's northernmost borough, coterminous with Bronx County. It is the only one of the city's five boroughs situated primarily on the United States mainland rather than on an island. As of 2005, the United States Census Bureau estimated that the borough's population was 1,357,589. If all five boroughs were independent cities, the Bronx would rank as the ninth most populous city in the United States. Its population has increased since a decline that began after the 1960 census. The borough had its peak population in 1950. [2] The Bronx is the fourth most populous of New York City's five boroughs, and Bronx County is the fifth most populous county in the New York Metropolitan Area.
