West Islip Flag

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 2026 population of 26,149. West Islip is currently declining at a rate of -0.52% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in West Islip is $176,281 with a poverty rate of 2.7%. The median age in West Islip is 38.5 years: 35.8 years for males, and 41.2 years for females. For every 100 females there are 103.9 males.

26.1K
Total Population
4,291
Density (mi²)
-137 -0.52%
Growth

West Islip Population

West Islip Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202626,149-137-0.52%
202526,286-136-0.51%

Median Age

Overall: 38.5 years
Female: 41.2 years
Male: 35.8 years

West Islip Adults

There are 21,156 adults, (3,727 of whom are seniors) in West Islip.

Sex Ratio

Female: 13,174 (49%)
Male: 13,691 (51%)

Demographics

The racial composition of West Islip includes 83.89% White, and smaller percentages for other race, Black or African American, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White22,53683.89%
Two or more races3,05211.36%
Other race6172.3%
Black or African American3351.25%
Asian3251.21%
Race
Population ↓
Percentage (of total)
Two or more races2,1958.17%
White7102.64%
Other race4941.84%
Black or African American520.19%
Race
Population ↓
Percentage (of total)
White21,82681.24%
Two or more races8573.19%
Asian3251.21%
Black or African American2831.05%
Other race1230.46%

West Islip Marital Status

Economics and Income Statistics

West Islip 's average per capita income is $85,637. Household income levels show a median of $176,281. The poverty rate stands at 2.7%.

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$202,541-
Families$193,811$219,972
Households$176,281$202,648
Non Families$78,412$118,335

$85,637

Average Income

$176,281

Median Household Income

2.7%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)