Alto Pass IL ZIP Code
Alto Pass city is located in Illinois State, Union County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Alto Pass IL zip code by its streets and block numbers if we have some of the Alto Pass streets loaded in our website
Alto Pass Area Code is 618 and Time Zone is Central (GMT -06:00).
Alto Pass Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Alto Pass City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Alto Pass ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Alto Pass, Illinois.
The Alto Pass Zip Code is 62905.
If you want to send a mail to Alto Pass City, you should use the 62905 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Alto Pass 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 62905 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Alto Pass 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.