Union County post codes
Codes
31About Union County
Union County is in New Jersey (NJ), United States. It covers 23 places and 31 post codes in the 5 digits format.
This page contains 31 post code records. Every post code on this page maps to a single place.
Nearby counties include Essex County, Middlesex County, Hudson County. Other counties in New Jersey (NJ) include Atlantic County, Bergen County, Burlington County.
Addresses in Union County usually include the place, county, state, post code, and country; confirm the local order before mailing.
At a glance
Address example
Postal formats vary by country; these are the address elements.
Shared post codes
Every post code on this page maps to a single place.
Location
FAQ
How many places are in Union County?
23
How many post codes are in Union County?
31
Which state is Union County in?
New Jersey (NJ)
What is the post code format?
5 digits