New Brunswick, NJ ZIP Codes
New Brunswick, New Jersey has 5 ZIP codes: for street addresses, and for PO boxes and and for single organizations.
Mail addressed to New Brunswick covers nearby places too.
Where the 08901 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
08903, 08906, 08933 and 08989 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: New Brunswick city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in New Brunswick
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?
New Brunswick PO box and business ZIP codes
| ZIP | Type and post office or station |
|---|---|
| 08901 | street delivery Kilmer Sorting and Delivery Center |
| 08903 | PO boxes at the New Brunswick post office New Brunswick |
| 08906 | PO boxes at the Kilmer Sorting and Delivery Center post office Kilmer Sorting and Delivery Center |
| 08933 | one organization Kilmer Sorting and Delivery Center |
| 08989 | one organization Kilmer Sorting and Delivery Center |
New Brunswick ZIP code questions
What is the main ZIP code for New Brunswick?
08901, the ZIP code of the main Kilmer Sorting and Delivery Center post office at 21 Kilmer Rd.
Which New Brunswick ZIP codes are for PO boxes only?
08903 and 08906. Mail to them goes to boxes at the post office, not to street addresses.
What county is New Brunswick in?
Middlesex County.
ZIP codes for towns near New Brunswick
More towns near New Brunswick: South Brunswick Township, Plainfield, Old Bridge Township, Perth Amboy, Woodbridge Township, Bridgewater Township, Monroe Township, Hillsborough Township, Rahway.
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