Demographics of New York City 9.1 million. While the city's projected 2030 population will be a new high, only two boroughs, Staten Island and Queens have reached their population peak every year for the last 5 years. The study projects that by 2030, Queens will have 2.57 million people and Staten Island 552,000. Manhattan, with 1.83 million, Bronx with 1.46 million and Brooklyn with 2.72 million, will still be below their population peaks. On March 27, 2011, New York City Mayor Michael Bloomberg announced that the city would file a formal challenge to the Census results, as a result of alleged undercounting in the boroughs
Boroughs of New York City form the new Nassau County. The borough of Staten Island, concurrent with Richmond County, was officially the borough of Richmond until the name was changed in 1975 to reflect its common appellation, while leaving the name of the county unchanged. There are throughout the five boroughs of New York City, many with a definable history and character to call their own. Since 1914, each of New York City's five boroughs has been coextensive with a county of New York State – unlike most U.S. cities, which lie within a single county or extend partially into another county, constitute a county