Area Codes in Illinois
Illinois has 16 area codes serving cities and communities across the state.
217
Champaign
Illinois
224
Arlington Heights
Illinois
309
Bloomington
Illinois
312
Chicago
Illinois
331
Aurora
Illinois
447
Champaign
Illinois
464
Cicero
Illinois
618
Alton
Illinois
630
Naperville
Illinois
708
Berwyn
Illinois
730
Alton
Illinois
773
Chicago
Illinois
779
Joliet
Illinois
815
Joliet
Illinois
847
Arlington Heights
Illinois
872
Chicago
Illinois