Quincy IL ZIP Code
Quincy city is located in Illinois State, Adams County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Quincy IL zip code by its streets and block numbers if we have some of the Quincy streets loaded in our website
Quincy Area Code is 217 and Time Zone is Central (GMT -06:00).
Quincy Zip Code - Illinois
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Quincy City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Quincy ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Quincy, Illinois.
The Quincy Zip Code is 62301, 62305, 62306.
If you want to send a mail to Quincy City, you should use the 62301, 62305, 62306 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Quincy 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 62301, 62305, 62306 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Quincy 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.