Water Mill

County:: Suffolk County
County Seat:: No
Area (mi²):: 10.576
State:: New York

Water Mill is a CDP located in Suffolk County, New York. Water Mill has a 2025 population of 2,495. Water Mill is currently growing at a rate of 2.55% annually and its population has increased by 34.14% since the most recent census, which recorded a population of 1,860 in 2020.

The average household income in Water Mill is $273,551 with a poverty rate of 3.43%. The median age in Water Mill is 56.2 years: 55.5 years for males, and 56.8 years for females.

Demographics

The racial composition of Water Mill includes 88.19% White, and smaller percentages for Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	1,956	88.19%
Two or more races	202	9.11%
Asian	49	2.21%
Black or African American	11	0.5%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Water Mill Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Water Mill's average per capita income is $74,000. Household income levels show a median of $158,250. The poverty rate stands at 3.43%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Families	$250,001	$335,037
Married Families	$250,001	-
Households	$158,250	$273,551
Non Families	$61,329	$145,748

$74,000

Average Income

$158,250

Median Household Income

3.43%

Poverty Rate