Rockford City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 256 | US | Alabama - AL | Rockford | Central | Details |
| 419 | US | Ohio - OH | Rockford | Eastern | Details |
| 509 | US | Washington - WA | Rockford | Pacific | Details |
| 616 | US | Michigan - MI | Rockford | Eastern | Details |
| 641 | US | Iowa - IA | Rockford | Central | Details |
| 779 | US | Illinois - IL | Rockford | Central | Details |
| 815 | US | Illinois - IL | Rockford | Central | Details |