Adair city is located in Illinois State, Mcdonough County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Adair IL zip code by its streets and block numbers if we have some of the Adair streets loaded in our website
Adair Area Code is 309 and Time Zone is Central (GMT -06:00).
Adair Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Adair City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Adair ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Adair, Illinois.
If you want to send a mail to Adair City, you should use the 61411 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Adair 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 61411 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Adair 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.