Chadwick city is located in Illinois State, Carroll County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Chadwick IL zip code by its streets and block numbers if we have some of the Chadwick streets loaded in our website
Chadwick Area Code is 815 and Time Zone is Central (GMT -06:00).
Chadwick Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Chadwick City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Chadwick ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Chadwick, Illinois.
If you want to send a mail to Chadwick City, you should use the 61014 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Chadwick 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 61014 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Chadwick 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.