What Is the Abbreviation for New Jersey?
The standard abbreviation for New Jersey is NJ. This page explains why New Jersey uses NJ, how the code fits into the modern USPS system, what older printed abbreviations looked like, and which nearby or similar state codes people commonly confuse with it.
What Is the Abbreviation for New Jersey?
New Jersey is abbreviated NJ. Older sources may use N.J., but the two-letter postal form NJ is the modern standard for addresses, forms, databases, and current style guides.
NJ is the form used for New Jersey in mailing addresses, shipping labels, government forms, and most databases.
Why New Jersey Uses NJ
New Jersey uses the USPS abbreviation NJ.
USPS adopted NJ for New Jersey in 1963. The older form N.J. still appears in older publications, but NJ is the standard postal abbreviation now.
Old Abbreviation for New Jersey
Before the USPS two-letter system became the mailing standard in 1963, printed reference books and newspapers often used longer abbreviations with punctuation. For New Jersey, that older style was usually N.J..
That older form still appears in historical texts, archival material, and some legacy style guides, but the modern postal and database standard is NJ. If someone searches for old abbreviation for New Jersey, the practical answer is to recognize N.J. and use NJ in current writing and addresses.
How to Write New Jersey in an Address
In standard American addressing, the state line uses the city name followed by the two-letter code and ZIP Code. The abbreviation stays uppercase and does not take periods.
That same format applies in checkout forms, school worksheets, CRM exports, spreadsheets, shipping labels, and government databases — anywhere a two-letter state code is required.
NJ Compared With Similar State Codes
NJ is often compared with NH, NM, and NY because the New-state abbreviations can look similar in short lists and dropdowns.
Related Abbreviation Questions
These states share a first letter, region, or alphabetical position with New Jersey and are commonly checked alongside it.
Capital, Region, and Context
New Jersey belongs to the Northeast region. Its capital is Trenton, and its postal code NJ is used in addresses, forms, and databases throughout the country.
New Jersey entered the Union on December 18, 1787.
FAQ
What is the abbreviation for New Jersey?
The standard USPS abbreviation for New Jersey is NJ.
What is the postal abbreviation for New Jersey?
NJ is the two-letter postal abbreviation for New Jersey. It is the form used in mailing addresses, shipping labels, forms, and databases.
How do you abbreviate New Jersey?
Abbreviate New Jersey as NJ in current USPS, mailing, and database use.
Why is New Jersey abbreviated NJ?
New Jersey uses the USPS abbreviation NJ.
What does NJ stand for?
NJ stands for New Jersey in the USPS state abbreviation system.
What is the old abbreviation for New Jersey?
Older editorial styles often wrote New Jersey as N.J.. For mailing and database use, the modern standard is NJ.
How do you write a New Jersey mailing address?
Use the city name, then the two-letter postal code NJ, then the ZIP Code. For example: Trenton, NJ 00000.
What state is NJ?
NJ is the postal abbreviation for New Jersey, located in the Northeast region. The capital is Trenton.
Test All 50 State Abbreviations
Now that you know NJ stands for New Jersey, see how many of the other 49 you can get right. The M-states and I-states trip up most people.