How many area codes are in Illinois?
Area codes in Illinois
Currently the state of Illinois has a total of 13 area codes. The area codes for IL are as follows:
Are there other differents area codes in Illinois?
No, there are currently only 13 area codes in the state of Illinois.
However, it is possible that a greater number may exist in the event that certain regions increase the number of existing telephone numbers and new ones may have to be included to service new telephones that may appear in this region of IL.
So if you need "How many area codes are in Illinois?" the answer is 13.