Allentown NJ ZIP Code
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Allentown city is located in New Jersey State, Monmouth County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Allentown NJ zip code by its streets and block numbers if we have some of the Allentown streets loaded in our website
Allentown Area Code is 609 and Time Zone is Eastern (GMT -05:00).
Allentown Zip Code - New Jersey
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Allentown City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Allentown ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Allentown, New Jersey.
The Allentown Zip Code is 08501.
If you want to send a mail to Allentown City, you should use the 08501 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Allentown ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 08501 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Allentown city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in New Jersey.