Thomson IL ZIP Code
Thomson 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 Thomson IL zip code by its streets and block numbers if we have some of the Thomson streets loaded in our website
Thomson Area Code is 815 and Time Zone is Central (GMT -06:00).
Thomson Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Thomson City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Thomson ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Thomson, Illinois.
The Thomson Zip Code is 61285.
If you want to send a mail to Thomson City, you should use the 61285 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Thomson 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 61285 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Thomson 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.