West Islip

County:: Suffolk County
County Seat:: No
Area (mi²):: 6.094
State:: New York

West Islip is a CDP located in Suffolk County, New York. West Islip has a 2025 population of 26,906. West Islip is currently declining at a rate of -0.36% annually but its population has increased by 1.1% since the most recent census, which recorded a population of 26,614 in 2020.

The average household income in West Islip is $200,108 with a poverty rate of 2.66%.The median age in West Islip is 39.8 years: 36.4 years for males, and 42.5 years for females.

Demographics

The racial composition of West Islip includes 84.3% White, and smaller percentages for other race, Asian, Black or African American, Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	22,388	84.3%
Two or more races	2,778	10.46%
Other race	582	2.19%
Asian	473	1.78%
Black or African American	322	1.21%
Native American	16	0.06%

West Islip Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

West Islip's average per capita income is $82,446. Household income levels show a median of $171,045. The poverty rate stands at 2.66%.

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
Married Families	$193,056	-
Families	$184,367	$213,556
Households	$171,045	$200,108
Non Families	$85,909	$124,660

$82,446

Average Income

$171,045

Median Household Income

2.66%

Poverty Rate