New Rochelle is a city in Westchester County, New York, United States, in the southeastern portion of the state.In 2007, the city had a population of 73,260, making it the seventh-largest in the state of New York. As of the 2010 Census, the city's population had increased to 77,062. In November 2008 Business Week magazine listed New Rochelle as the best city in New York State, and one of the best places nationally, to raise children. In 2014, based on analysis of 550 U.S. cities, New Rochelle was voted the 13th best city to live in.