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Islip Terrace, New York facts for kids

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Islip Terrace, New York
U.S. Census map
U.S. Census map
Islip Terrace, New York is located in New York
Islip Terrace, New York
Islip Terrace, New York
Location in New York
Country United States
State New York
County Suffolk
 • Total 1.4 sq mi (3.5 km2)
 • Land 1.4 sq mi (3.5 km2)
 • Water 0 sq mi (0.0 km2)
23 ft (7 m)
 • Total 5,389
 • Density 3,990/sq mi (1,540/km2)
Time zone UTC-5 (Eastern (EST))
 • Summer (DST) UTC-4 (EDT)
ZIP code
Area code(s) 631
FIPS code 36-38022
GNIS feature ID 0953844

Islip Terrace is a hamlet and census-designated place (CDP) in the Town of Islip in Suffolk County, New York, United States. The population was 5,389 at the 2010 census.


In 1914, a New York City real estate agent developed houses in the woods between East Islip and Central Islip State Hospital. Many who worked in the hospital lived here. The hamlet was originally called Germantown to attract people of German origin, but was renamed Islip Terrace because of German involvement in World War I.


Islip Terrace is located at 40°44′55″N 73°11′11″W / 40.74861°N 73.18639°W / 40.74861; -73.18639 (40.748738, -73.186417).

According to the United States Census Bureau, the CDP has a total area of 1.4 square miles (3.5 km2), all land.


As of the census of 2000, there were 5,641 people, 1,755 households, and 1,463 families residing in the CDP. The population density was 3,985.3 per square mile (1,533.8/km2). There were 1,784 housing units at an average density of 1,260.4/sq mi (485.1/km2). The racial makeup of the CDP was 95.82% White, 0.50% African American, 0.04% Native American, 1.49% Asian, 1.08% from other races, and 1.08% from two or more races. Hispanic or Latino of any race were 6.61% of the population.

There were 1,755 households, out of which 43.6% had children under the age of 18 living with them, 67.6% were married couples living together, 11.5% had a female householder with no husband present, and 16.6% were non-families. 13.2% of all households were made up of individuals, and 4.4% had someone living alone who was 65 years of age or older. The average household size was 3.21 and the average family size was 3.51.

In the CDP, the population was spread out, with 29.5% under the age of 18, 6.7% from 18 to 24, 33.6% from 25 to 44, 20.6% from 45 to 64, and 9.6% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 96.9 males. For every 100 females age 18 and over, there were 93.6 males.

The median income for a household in the CDP was $66,644, and the median income for a family was $69,389. Males had a median income of $51,036 versus $30,714 for females. The per capita income for the CDP was $23,269. About 1.7% of families and 2.4% of the population were below the poverty line, including 2.1% of those under age 18 and 3.1% of those age 65 or over.


  • Beaver Dam Park



Major roads within the hamlet of Islip are:

  • NY Route 27, also known as Sunrise Highway (Exit 46N)
  • Southern State Parkway (Exit 43A,43W,43E)
  • Suffolk County Road 17, also known as Carleton Avenue, runs parallel to NY Route 111 (Islip Avenue) from its southern terminus at NY 27A in Islip to its northern terminus at NY 111 near the Long Island Expressway in Hauppauge.


Islip Terrace is approximately 6 miles (9.7 km) from Long Island MacArthur Airport in Ronkonkoma.


No railroad lines run through Islip Terrace. The closest stations to the hamlet are the 1897-established Great River Station along the Long Island Rail Road Montauk Branch, originally built by the South Side Railroad of Long Island until 1876. and the nearby 1868-built Islip Station which is also on the Montauk Branch of the railroad.


There are many bus stops in Islip Terrace, mostly along branches of the 3C. Buses are operated and maintained by the local Suffolk Transportation Service, Inc.

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