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
Borough Park, Brooklyn significantly, and has earned the title of "baby boom capital" of New York City because of its high birth rate. The population in 2011 was 140,000. The neighborhood recorded 4,523 births in 2004, the highest in the city. The closest Brooklyn neighborhood in terms of population growth was Williamsburg, home to many Satmar Hasidim, which reported 3,839 births. Borough Park's birth rate, 24.4 per 1,000 residents, has translated into major growth in the neighborhood. Many of these births occur at Maimonides Medical Center, a hospital in the Borough Park area. The Maimonides Infants & Children’s Hospital of Brooklyn is fully