Introduction to Central Islip, New York

Central Islip, New York, in Suffolk county, is 2 miles E of Brentwood, New York and 40 miles E of New York, New York. The town is considered part of the Nassau - Suffolk metropolitan area.

Central Islip History

Central Islip was named in reference to its position between Islip and East Islip. East Islip was once famous for its mental hospital, which was established by New York City in the late 19th century. At its peak in 1955, the hospital had about 10,000 patients. However, it was shut down in 1977.

Central Islip and nearby Attractions

  • Jewish Sports Hall of Fame
  • South Haven County Park
  • Heckscher State Park
  • Hamlet Wind Watch Golf Club
  • Lake Ronkonkoma
  • Blydenburgh Park

Things To Do In Central Islip

The Long Island Maritime Museum is a few miles away and is a popular spot among locals and tourists. The Connecticut River State Park has walking trails as well as a wide range of facilities for relaxation and entertainment. The water front has facilities for fishing, swimming, boating and other water sports.

Central Islip Transportation

John F. Kennedy International Airport is the nearest major airport.

Central Islip Higher Education

Suffolk County Community College, Dowling College and Saint Joseph's College provide opportunities for higher education.


Total Population 34,960
Male Share of the Population 50.9%
Female Share of the Population 49.1%
Senior Citizens 9.9%
Employed Population 16+ 16,233
Age of the Population 34


% of people married 37.8%
Average household size 4

Education and Earnings

Population % with Bachelor Degree or Higher 15.3%
Median Earnings25+ $36,303
Median Earnings Without High School Qualification $24,050
Median Earnings With High School Degree $37,538


Median Family Income $68,231
% Above Poverty Level 86.9%
% Below Poverty Level 13.1%

Commute & Sprawl

Average Commute Time 28 minutes
% Working from Home 0.9%
% Walking and Biking to Work 2.5%
% Using Public Transportation 6.2%


People Living Alone 21.8%
Median Gross Rent $1,467
Median House Value $252,100


Other(often includes Hispanic and African American) 65.2%
US/American 0%
English 1.2%
Irish 5.7%

Source: American Community Survey, U.S. Census Bureau, 2015, www.census.gov/programs-surveys/acs/.

Central Islip Almanac

Category Value
Nearest Medium City 2 miles E of Brentwood, New York (center to center)
Nearest Large City 40 miles E of New York, New York
County Suffolk
Standard Zip Codes 11722, 11749
P.O. Box Zip Codes 11760
Phone Area Codes 631
Time Zone Eastern (-5 hours from GMT)
Daylight Savings The city observes Daylight Saving Time.
Latitude 40.79
Longitude -73.202

Central Islip Climate

Nearest Weather Stations


  • Temp ranges are avg daily min and max for the month
  • Precipitation is rainfall (and rainfall equiv of snowfall)

Distance 5.4 miles
Jan Temp 23 to 39 F
Apr Temp 40 to 58 F
Jul Temp 66 to 83 F
Oct Temp 45 to 64 F
Annual Precip 46.5 inches
Distance 10.6 miles
Jan Temp 22 to 39 F
Apr Temp 39 to 59 F
Jul Temp 64 to 83 F
Oct Temp 45 to 64 F
Annual Precip 50.2 inches
Distance 18.4 miles
Jan Temp 24 to 37 F
Apr Temp 40 to 55 F
Jul Temp 67 to 81 F
Oct Temp 47 to 62 F
Annual Precip 42.9 inches

Neighborhood and Nearby Area Names

According to the US Postal Service, Central Islip, its neighborhoods, and/or surrounding areas are also referred to as:

South Hauppauge (11722)

Note that not all alternate names are acceptable for use in US Post Office addresses.

Nearby Cities and Towns

Location Population Median Family Income
Brentwood 61,374 $68,756
East Islip 13,802 $126,229
Hauppauge 20,616 $120,044
Islandia 3,370 $98,826
Islip 336,747 $97,009
Islip Terrace 5,327 $111,131

Source: American Community Survey, U.S. Census Bureau, 2015, www.census.gov/programs-surveys/acs/.

Central Islip Public Libraries

Central Islip Public Library
Central Islip, New York
(631) 234-9333

library logo

More Information for Librarians

These schools offer particularly quick info upon request, and we have written detailed profiles for each (click school names to see the profiles). Request info from multiple schools, by clicking the Request Info links.
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Central Islip High Schools

Title I eligible, not participating.
Serves 1,881 students.

Study Online in Central Islip

Career and College Resources

Real-World Career Reports
Career References and Original Articles
College Directories and Lists
Additional Resources
Info for Central Islip Government Officials

Are you an official in the Central Islip government or quasi-government agency such as the chamber of commerce, visitors bureau or economic development council? If so, visit our information page for government officials to see how CityTownInfo can support you.

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