Mount Vernon is a city in Westchester County, New York, United States. It is an inner suburb of New York City, immediately to the north of the borough of the Bronx. As of the 2010 census, Mount Vernon had a population of 67,292, making it the eighth most populous city in the state.
Mount Vernon has two major sections. South-side Mount Vernon is more urban while North-side Mount Vernon is more residential. Mount Vernon's downtown business district is on the city's south side, which features the City Hall, Mount Vernon's main post office, Mount Vernon Public Library, office buildings, and other municipal establishments.