Hillsborough Township, NJ ZIP Code
Hillsborough Township, New Jersey has one ZIP code: .
Mail addressed to Hillsborough Township covers nearby places too.
Where the 08844 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Hillsborough Township township limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and county subdivision limits (2024).
Check an address in Hillsborough Township
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?
Why your mail may say Hillsborough Township when you live outside it
Hillsborough Township ZIP codes also cover Hillsborough, Blackwells Mills and Neshanic, so a letter addressed to Hillsborough Township can go to a home outside the township limits.
A ZIP code does not set your city, school district or tax. Somerset County property records show which city you are in.
Hillsborough Township ZIP code questions
What is the main ZIP code for Hillsborough Township?
08844, the ZIP code of the main Hillsborough post office at 437 Amwell Rd.
What county is Hillsborough Township in?
Somerset County.
ZIP codes for towns near Hillsborough Township
More towns near Hillsborough Township: New Brunswick, East Brunswick Township, Lawrence Township, West Windsor Township, Plainfield, Edison Township, Ewing Township, Monroe Township, East Windsor 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