Stockton IL ZIP Code
Stockton city is located in Illinois State, Jo Daviess County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Stockton IL zip code by its streets and block numbers if we have some of the Stockton streets loaded in our website
Stockton Area Code is 815 and Time Zone is Central (GMT -06:00).
Stockton Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Stockton City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Stockton ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Stockton, Illinois.
The Stockton Zip Code is 61085.
If you want to send a mail to Stockton City, you should use the 61085 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Stockton 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 61085 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Stockton 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.