Shannon IL ZIP Code
Shannon 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 Shannon IL zip code by its streets and block numbers if we have some of the Shannon streets loaded in our website
Shannon Area Code is 815 and Time Zone is Central (GMT -06:00).
Shannon Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Shannon City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Shannon ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Shannon, Illinois.
The Shannon Zip Code is 61078.
If you want to send a mail to Shannon City, you should use the 61078 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Shannon 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 61078 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Shannon 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.