Introduction to Islip, New York

Islip, New York, in Suffolk county, is 4 miles SE of Brentwood, New York and 40 miles E of New York, New York. Islip is part of the surrounding Nassau - Suffolk metro area.

Islip History

The present day Town of Islip was originally inhabited by Algonquin Native Americans. William Nicoll purchased the land from Sachem Winnequaheagh on November 29, 1683 and named his plantation Islip Grange after Islip, England. The district of Islip was established in 1710. It became a town in 1790. The area became a vacation spot for wealthy tourists from New York City at one time. Numerous lodges, mansions and country clubs were established in the town. The Long Island Railroad entered the town in 1844.

Islip and nearby Attractions

  • Heckscher State Park
  • Atlantis Marine World Aquarium
  • George Washington Bridge
  • Adventureland Amusement Park
  • Long Island Maritime Museum
  • Connetquot River State Park Preserve

Things To Do In Islip

Fishing, boating, swimming, hiking and other recreational activities are available at the the Broadway Avenue Park, Brookwood Hall Park, Casamento Park, Byron Lake Park, Hidden Pond Park, Ronkonkoma Beach and Park, Holbrook Park and Timberline Park. Golfers can enjoy a round at the Brentwood Country Club, Gull Haven Golf Club and Holbrook Country Club. The Adventureland Amusement Park, the Maritime Aquarium at Norwalk and the Wildlife and Ecology Center at Holtsville are all popular local recreational spots as well.

Islip Transportation

Long Island Mac Arthur Airport is nearby.

Islip Higher Education

Dowling College, Saint Joseph's College-Suffolk, SUNY Stony Brook and Long Island University-Brentwood are the nearest colleges and universities.


Total Population 336,747
Male Share of the Population 49.3%
Female Share of the Population 50.7%
Senior Citizens 12.5%
Employed Population 16+ 164,847
Age of the Population 38


% of people married 47.7%
Average household size 3

Education and Earnings

Population % with Bachelor Degree or Higher 27.5%
Median Earnings25+ $42,394
Median Earnings Without High School Qualification $24,347
Median Earnings With High School Degree $35,445


Median Family Income $97,009
% Above Poverty Level 92.7%
% Below Poverty Level 7.3%

Commute & Sprawl

Average Commute Time 30 minutes
% Working from Home 2.3%
% Walking and Biking to Work 1.5%
% Using Public Transportation 6.7%


People Living Alone 19.4%
Median Gross Rent $1,510
Median House Value $350,700


Other(often includes Hispanic and African American) 38.4%
US/American 0.1%
English 3.4%
Irish 18.4%

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

Islip Almanac

Category Value
Nearest Medium City 4 miles SE of Brentwood, New York (center to center)
Nearest Large City 40 miles E of New York, New York
County Suffolk
Standard Zip Codes 11751
Phone Area Codes 631
Time Zone Eastern (-5 hours from GMT)
Daylight Savings The city observes Daylight Saving Time.
Latitude 40.729
Longitude -73.21

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 7.6 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 12.1 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 16.1 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, Islip, its neighborhoods, and/or surrounding areas are also referred to as:

Bayberry Point (11751)

Islip Manor (11751)

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

Nearby Cities and Towns

Location Population Median Family Income
Bay Shore 29,670 $79,489
Brightwaters 3,102 $150,750
East Islip 13,802 $126,229
Great River 1,561 $132,407
Islip Terrace 5,327 $111,131

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

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Islip High Schools

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