Caldwell NJ ZIP Code
Caldwell city is located in New Jersey State, Essex County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Caldwell NJ zip code by its streets and block numbers if we have some of the Caldwell streets loaded in our website
Caldwell Area Code is 973/201/862 and Time Zone is Eastern (GMT -05:00).
Caldwell Zip Code - New Jersey
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Caldwell City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Caldwell ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Caldwell, New Jersey.
The Caldwell Zip Code is 07006, 07007.
If you want to send a mail to Caldwell City, you should use the 07006, 07007 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Caldwell 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 07006, 07007 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Caldwell 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.