Illinois - IL Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 217 | US | Illinois - IL | Central | Details | |
| 224 | US | Illinois - IL | Central | Details | |
| 309 | US | Illinois - IL | Central | Details | |
| 312 | US | Illinois - IL | Central | Details | |
| 331 | US | Illinois - IL | Central | Details | |
| 618 | US | Illinois - IL | Central | Details | |
| 630 | US | Illinois - IL | Central | Details | |
| 708 | US | Illinois - IL | Central | Details | |
| 773 | US | Illinois - IL | Central | Details | |
| 779 | US | Illinois - IL | Central | Details | |
| 815 | US | Illinois - IL | Central | Details | |
| 847 | US | Illinois - IL | Central | Details | |
| 872 | US | Illinois - IL | Central | Details |