Area Codes in Illinois

What are the area codes for Illinois?

Illinois phone numbers may have the following area codes:

The use of these area codes will vary depending on the region of Illinois in which the phone number from which you are calling or making the phone call is located. Therefore, below are the different regions of the state of Illinois so that you can look up which code is associated with each area.

Regions of the state of Illinois

 

Area Codes in Illinois

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