Illinois Zip code

Illinois Postcode / Illinois Zip code

Illinois postcode also known Illinois Zip codes, introduced by the United States Postal Service (USPS) in 1963, are numerical codes used to identify specific geographic regions for mail delivery. and Illinois zip code used a 5-digit postal format XXXXX, The first 3 digit represent the postal delivery zone code, and last 2 digit represent the Post office in the Illinois.

There are total 1590 zipcode code in Illinois and range of zipcode is 60002 to 62999.

for example zip code for Illinois 62996, where 629 is Illinois delivery zone code and 96 is Post office in VILLA RIDGE.

View all the zip code on map of Illinois by clicking on our mapview appliction

1. What is the format of zip codes in Illinois?
Illinois zip codes follow the standard 5-digit format, starting with the number - 600.

2. How many zip codes are there in Illinois?
There are approximately 1590 zip codes in Illinois, covering a vast area of the state.

3. Do all areas in Illinois have zip codes?
Yes, almost all populated areas in Illinois are assigned a unique zip code for mail delivery purposes.