West Windsor Township, NJ ZIP Codes
West Windsor Township, New Jersey has 2 ZIP codes: 2 for street addresses ( and ).
Your street decides which one you use.
Which West Windsor Township 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?
West Windsor Township ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: West Windsor Township township limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and county subdivision limits (2024).
All West Windsor Township ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 08540 | street delivery; mail may be addressed to Princeton Princeton |
| 08550 | street delivery; mail may be addressed to Princeton Junction Princeton |
Why your mail may say West Windsor Township when you live outside it
West Windsor Township ZIP codes also cover Princeton, Franklin Township and Lawrence Township, so a letter addressed to West Windsor Township can go to a home outside the township limits.
A ZIP code does not set your city, school district or tax. Mercer County property records show which city you are in.
West Windsor Township ZIP code questions
What is the main ZIP code for West Windsor Township?
08540, the ZIP code of the main Princeton post office at 213 Carnegie Ctr.
What county is West Windsor Township in?
Mercer County.
ZIP codes for towns near West Windsor Township
More towns near West Windsor Township: Ewing Township, Monroe Township, Falls Township, Lower Makefield Township, Franklin Township, North Brunswick Township, East Brunswick Township, Hillsborough Township, Manalapan Township.
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