Mamaroneck, New York

Mamaroneck
Mamaroneck Harbor, May 2005
Location of Mamaroneck, New York
Coordinates: 40°56′57″N 73°44′01″W / 40.94917°N 73.73361°W / 40.94917; -73.73361
CountryUnited States
StateNew York
CountyWestchester
Government
  SupervisorJaine Elkind Eney (D)
Area
  Total
14.06 sq mi (36.43 km2)
  Land6.65 sq mi (17.23 km2)
  Water7.41 sq mi (19.19 km2)
Elevation
0 ft (0 m)
Population
 (2020)
  Total
31,758
  Density2,300/sq mi (870/km2)
Time zoneUTC−5 (Eastern (EST))
  Summer (DST)UTC−4 (EDT)
ZIP Codes
10538, 10543, 10583
Area code914
FIPS code36-119-44842
Websitewww.townofmamaroneckny.org

Mamaroneck (/məˈmærənɛk/ mə-MAIR-ə-nek), is a town in Westchester County, New York, United States.

The population was 31,758 at the 2020 United States census over 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, Jaine Elkind Eney.

Much of the unincorporated section of the town receives its mail via the Larchmont Post Office and thereby has a Larchmont address.