How to Write a New Jersey Address (With Examples)

Address basics  |   |  2 min read

Writing a New Jersey address correctly comes down to three things: the right street format, the two-letter code NJ and a ZIP code that matches the city.

The standard format

RECIPIENT NAME STREET NUMBER AND NAME, UNIT CITY, NJ ZIP CODE

The state is always written as NJ, two capital letters with no periods. USPS prefers the city, state and ZIP on the same final line.

Example: Trenton

Matthew Chen 7236 Meadow Ave Trenton, NJ 08638

Example with an apartment in Trenton

Nancy Reed 1078 Madison Ln Apt 36 Trenton, NJ 08690

Example with a PO Box

Richard Walker PO Box 8136 Trenton, NJ 08610

PO Boxes often have their own ZIP code, separate from street addresses in the same town. Check the ZIP with the post office that holds the box.

Common mistakes

  • Mixing up NJ with NY (New York). These codes look similar and cause misrouted mail.
  • Writing the full state name or an old abbreviation instead of NJ.
  • Dropping the leading zero from the ZIP code in spreadsheets.
  • Putting the apartment number on a line below the street address.
  • Using a ZIP code from a neighboring city. One city can have many codes, but each street belongs to a specific one.

Counties and local details

New Jersey is divided into 21 counties. The county does not appear in a mailing address, but it matters for sales tax, elections and some shipping rules, so many business systems store it separately.

Create realistic New Jersey addresses for testing, with real cities, counties and ZIP codes.

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