Town of Mamaroneck, NY ZIP Codes
Town of Mamaroneck, New York has 2 ZIP codes: 2 for street addresses ( and ).
Your street decides which one you use.
Which Town of Mamaroneck 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 Mamaroneck ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Town of Mamaroneck town limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and county subdivision limits (2024).
All Town of Mamaroneck ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 10538 | street delivery; mail may be addressed to Larchmont Larchmont |
| 10543 | street delivery Mamaroneck |
ZIP codes from nearby towns that reach into Town of Mamaroneck
- 10583, mailing town Scarsdale, covers 4 percent of Town of Mamaroneck
Why your mail may say Town of Mamaroneck when you live outside it
Town of Mamaroneck ZIP codes also cover Mamaroneck and Larchmont, so a letter addressed to Town of Mamaroneck can go to a home outside the town limits.
The reverse happens too: parts of Town of Mamaroneck use 10583, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Westchester County property records show which city you are in.
Town of Mamaroneck ZIP code questions
What is the main ZIP code for Town of Mamaroneck?
10543, the ZIP code of the main Mamaroneck post office at 309 Mount Pleasant Ave.
What county is Town of Mamaroneck in?
Westchester County.
ZIP codes for towns near Town of Mamaroneck
More towns near Town of Mamaroneck: White Plains, North Hempstead, Greenburgh, Town of Greenwich, Fort Lee, Mount Pleasant, Orangetown, Teaneck Township, Town of Oyster Bay.
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