Water Mill, New York

Water Mill, New York
Water Mill derives its name from a claim that the first watermill in New York was built there in 1644.
Water Mill
Coordinates: 40°55′0″N 72°20′50″W / 40.91667°N 72.34722°W / 40.91667; -72.34722
CountryUnited States
StateNew York
CountySuffolk
Area
 • Total
12.79 sq mi (33.13 km2)
 • Land10.58 sq mi (27.39 km2)
 • Water2.21 sq mi (5.73 km2)
Elevation
39 ft (12 m)
Population
 (2020)
 • Total
2,506
 • Density236.9/sq mi (91.48/km2)
Time zoneUTC−5 (Eastern (EST))
 • Summer (DST)UTC−4 (EDT)
ZIP Code
11976
Area code631
FIPS code36-78575
GNIS feature ID1867422

Water Mill is a hamlet and a census-designated place (CDP) within the Town of Southampton on Long Island in Suffolk County, New York, United States. As of the 2020 census, Water Mill had a population of 2,506. Its ZIP Code is 11976.

As of 2024, Water Mill is the third most expensive ZIP Code in the United States and the second most expensive ZIP code in New York State. The median home price was $5,885,000.