Islip

Census-designated place in Suffolk County, New York

View of Islip, New York
Photo: DanTD · CC BY-SA 3.0

Islip is an unincorporated community (census-designated place) in Suffolk County, New York, with 18,418 residents (2020 Census). It sits at 16 ft (5 m) above sea level. The nearest town is East Islip, 1.5 miles E.

About Islip

Islip ( EYE-slip) is a hamlet and census-designated place (CDP) that lies within the town of the same name in Suffolk County, New York. Located on the south shore of Long Island, the CDP had a population of 18,869 at the time of the 2010 census, a decline of 8% from the 2000 census.

Text: Wikipedia · CC BY-SA 4.0

Islip weather: 7-day forecast

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Source: National Weather Service (NOAA).

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Living in Islip

Median household income
$120,909
Median home value
$542,200
Median rent
$2,235/mo
Median age
43.9
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Map of Islip

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Islip Street View

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Islip, NY population

Islip had 18,418 residents in the 2020 Census.

2020 Census18,418
Density3,904 per sq mi (1,507 per km²)

Source: U.S. Census Bureau, Decennial Census.

Islip at a glance

StateNew York (NY)
CountySuffolk County
TypeCensus-designated place
Population18,418 (2020)
Land area4.72 sq mi (12.2 km²)
Water area0.68 sq mi (1.76 km²)
Elevation16 ft (5 m)
Coordinates40.7303° N, 73.2161° W
ZIP codes11751, 11706, 11730
Census code (GEOID)3637869

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near Islip

Straight-line distance between town centers.

Frequently asked questions about Islip

What county is Islip in?

Islip is in Suffolk County, New York.

What is the population of Islip, NY?

18,418 people lived in Islip at the 2020 Census.

What is the ZIP code of Islip, NY?

The main ZIP code is 11751. Other ZIP codes: 11706, 11730.

What is the elevation of Islip?

16 feet (5 m) above sea level.

What towns are near Islip?

East Islip (1.5 mi), Bay Shore (1.8 mi), Islip Terrace (2.1 mi), Brightwaters (2.6 mi), West Bay Shore (3.0 mi).

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