Mamaroneck (, ) is a
town in
Westchester County,
New York,
United States. The population was 29,156 at the 2010 census. There are two
villages contained within the town:
Larchmont and the
Village of Mamaroneck (part of which is located in the adjacent town of
Rye). The majority of the town's land area is not within either village, constituting an
unincorporated area, although a majority of the population lives within the villages. Legally, the unincorporated section and the villages constitute the town as a political and governmental subdivision of New York State. The town is led by a town board, composed of five town board members, which includes the Town Supervisor, Nancy Seligson.