Islip Flag

Islip

County:
Suffolk County
County Seat:
No
Area (mi²):
4.749
State:
New York

Islip is a CDP located in Suffolk County, New York. Islip has a 2026 population of 16,886. Islip is currently declining at a rate of -0.66% 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 Islip is $120,909 with a poverty rate of 5.7%. The median age in Islip is 43.9 years: 43.3 years for males, and 45 years for females. For every 100 females there are 99.2 males.

16.9K
Total Population
3,556
Density (mi²)
-113 -0.66%
Growth

Islip Population

Islip Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202616,886-113-0.66%
202516,999-112-0.65%

Median Age

Overall: 43.9 years
Female: 45 years
Male: 43.3 years

Islip Adults

There are 13,924 adults, (3,322 of whom are seniors) in Islip.

Sex Ratio

Female: 8,718 (50.2%)
Male: 8,644 (49.8%)

Demographics

The racial composition of Islip includes 71.05% White, 6.91% other race, 6.06% Asian, 3.14% Black or African American, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White12,33571.05%
Two or more races2,22912.84%
Other race1,2006.91%
Asian1,0526.06%
Black or African American5463.14%
Race
Population ↓
Percentage (of total)
Two or more races1,86110.72%
Other race1,1776.78%
White4732.72%
Asian1050.6%
Black or African American150.09%
Race
Population ↓
Percentage (of total)
White11,86268.32%
Asian9475.45%
Black or African American5313.06%
Two or more races3682.12%
Other race230.13%

Islip Marital Status

Economics and Income Statistics

Islip 's average per capita income is $65,404. Household income levels show a median of $120,909. The poverty rate stands at 5.7%.

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$157,783-
Families$151,493$158,480
Households$120,909$137,397
Non Families$62,604$72,938

$65,404

Average Income

$120,909

Median Household Income

5.7%

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)