Stillman Valley IL ZIP Code
Stillman Valley city is located in Illinois State, Ogle County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Stillman Valley IL zip code by its streets and block numbers if we have some of the Stillman Valley streets loaded in our website
Stillman Valley Area Code is 815 and Time Zone is Central (GMT -06:00).
Stillman Valley Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Stillman Valley City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Stillman Valley ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Stillman Valley, Illinois.
The Stillman Valley Zip Code is 61084.
If you want to send a mail to Stillman Valley City, you should use the 61084 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Stillman Valley 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 61084 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Stillman Valley 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.