Richmond County, also known as Staten Island is a borough of New York City, New York, United States. Staten Island is the least populated of the five boroughs with 475.000 people but is the third largest in area at 59 sq mi (153 km2). According to the 2010 Census, there were 475,000 people living in Staten Island, which is an increase of 5.6% since the 2000 Census. Notably, despite Staten Island being the least populous of the five boroughs of New York City, still has a greater population than large, independent cities such as St. Louis or Miami.