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ZIP Code Database - Facts & Stats

Data Last Updated: December 1, 2022

ZIP Codes for City of Islip, NY

Islip, NY Covers 1 ZIP Code

ZIP CodeTypeCountyPopulation
ZIP Code 11751StandardSuffolk14,961

Timezone(s):Eastern (GMT -05:00)
Counties:SUFFOLK, NY
Population:18,689 (More Details)
Male Population:9,132
Female Population:9,557
Median Age:40
ZIP Codes:1
Area Codes:2
Total Area:2,373 square miles (county)
Land Area:912 square miles (county)
Water Area:1,461 square miles (county)

Islip, NY Demographic Information *

Total population18,689
Male population9,132
Female population9,557
Median age (years)40.1
White Population16,151
Black Population875
Indian Population35
Asian Population465
Hawaiian Population10
Hispanic Population2,580
Median age (Male)39
Median age (Female)41.2
Total households6,437
Family households (families)4,797
Average household size2.89
Average family size3.36
Total housing units6,664
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 12/1/2022],
  2. Internal Data Creation [Last Updated: 12/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],