Westmont IL ZIP Code
Westmont city is located in Illinois State, Dupage County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Westmont IL zip code by its streets and block numbers if we have some of the Westmont streets loaded in our website
Westmont Area Code is 630/312/847/708 and Time Zone is Central (GMT -06:00).
Westmont Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Westmont City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Westmont ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Westmont, Illinois.
The Westmont Zip Code is 60559.
If you want to send a mail to Westmont City, you should use the 60559 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Westmont 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 60559 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Westmont 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 Illinois.