ZIP Codes are postal codes used by the USPS to identify specific geographic locations and improve the efficiency of the mail delivery system in the USA. In Illinois, ZIP Codes are used to ensure that mail is delivered to the correct location within the state. The first digit of a ZIP Code indicates a general region, the second and third digits indicate a specific region within that region, and the fourth and fifth digits indicate a specific delivery area or post office. ZIP Codes are an essential part of the mail delivery system in Illinois.
Chicago
Post Office
Chicago
Division
Cook
Pincode
60629
Chicago
Post Office
Chicago
Division
Cook
Pincode
60618
Chicago
Post Office
Chicago
Division
Cook
Pincode
60639
Chicago
Post Office
Chicago
Division
Cook
Pincode
60632
Chicago
Post Office
Chicago
Division
Cook
Pincode
60647
Chicago
Post Office
Chicago
Division
Cook
Pincode
60617
Cicero
Post Office
Cicero
Division
Cook
Pincode
60804
Chicago
Post Office
Chicago
Division
Cook
Pincode
60608
Chicago
Post Office
Chicago
Division
Cook
Pincode
60625
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Browse Illinois ZIP Codes
"Explore Illinois ZIP Codes: A Guide to the Postal Codes of the Illinois State"