Town of Islip, NY ZIP Codes
Town of Islip, New York has 17 ZIP codes: 17 for street addresses (, , , , , and 11 more).
Each street ZIP belongs to one post office or station. Check your street, or filter the list by post office.
Which Town of Islip ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Town of Islip ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Town of Islip town limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and county subdivision limits (2024).
Town of Islip ZIP code questions
How many ZIP codes does Town of Islip have?
17: 17 for street addresses (USPS, October 2026).
What is the main ZIP code for Town of Islip?
11751, the ZIP code of the main Islip post office at 309 Main St Unit 3.
How do I find the full ZIP+4 code for my address?
The last four digits come from the Postal Service and are not on this site. Its ZIP Code lookup by address on usps.com gives all nine.
