Get to know Water Mill
The practical stuff — trash day, town hall, schools — plus the town’s story and where to go. Kept current by neighbors.
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The basics
About Water Mill
Hamlet and census-designated place in New York, United StatesWater 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.
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Town essentials
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