Commack, NY ZIP Codes
Commack, New York has 2 ZIP codes: 2 for street addresses ( and ).
Your street decides which one you use.
Which Commack 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?
Commack ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: the Commack Census outline.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Commack ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 11725 | street delivery Commack |
| 11731 | street delivery; mail may be addressed to East Northport East Northport |
ZIP codes from nearby towns that reach into Commack
- 11787, mailing town Smithtown, covers 4 percent of Commack
Why your mail may say Commack when you live outside it
Commack ZIP codes also cover East Northport and Elwood, so a letter addressed to Commack can go to a home outside the town.
The reverse happens too: parts of Commack use 11787, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Suffolk County property records show which city you are in.
Commack ZIP code questions
What is the main ZIP code for Commack?
11725, the ZIP code of the main Commack post office at 150 Veterans Memorial Hwy.
What county is Commack in?
Suffolk County.
ZIP codes for towns near Commack
More towns near Commack: West Babylon, Centereach, Town of Oyster Bay, Hicksville, Town of Babylon, Levittown, Coram, East Meadow, Town of Brookhaven.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections