Water Mill

Welcome to Water Mill

Water Mill is a hamlet of the Town of Southampton on Long Island and census-designated place (CDP) in Suffolk County, New York, United States. The population of the CDP was 1,559 at the 2010 census.

Quick Facts

Population

1,559

Female

847

Male

712

  • White
    1,396
    89.5%
  • Hispanic
    109
    7.0%
  • Asian alone
    22
    1.4%
  • Black
    15
    1.0%
Median Home Price

$ 87,751

Average Income

$132,757

Median resident age

54.9 years