16 area codes assigned to Illinois · Central Time
217
Illinois
Central Time
224
Illinois
Central Time
309
Illinois
Central Time
312
Illinois
Central Time
331
Illinois
Central Time
447
Illinois
Central Time
464
Illinois
Central Time
618
Illinois
Central Time
630
Illinois
Central Time
708
Illinois
Central Time
730
Illinois
Central Time
773
Illinois
Central Time
779
Illinois
Central Time
815
Illinois
Central Time
847
Illinois
Central Time
872
Illinois
Central Time
Illinois is served by 16 area codes in the North American Numbering Plan (NANP): 217, 224, 309, 312, 331, 447, 464, 618, 630, 708, 730, 773, 779, 815, 847, 872. All Illinois numbers are in the Central Time zone. Click any area code above to see the cities and rate centers it covers, formatted tel: link examples, and to search for available phone numbers.