Onarga IL ZIP Code
Onarga city is located in Illinois State, Iroquois County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Onarga IL zip code by its streets and block numbers if we have some of the Onarga streets loaded in our website
Onarga Area Code is 815 and Time Zone is Central (GMT -06:00).
Onarga Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Onarga City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Onarga ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Onarga, Illinois.
The Onarga Zip Code is 60955.
If you want to send a mail to Onarga City, you should use the 60955 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Onarga 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 60955 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Onarga 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.