Rock Falls, IL Area Codes
Rock Falls is served by area code 815. It is in Illinois, Whiteside County. About 13,581 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 815 |
| State / province | Illinois |
| County | Whiteside County |
| Population | 13,581 |
| ZIP codes | 1 |
| Time zone | Central |
| Coordinates | 41.7247, -89.6989 |
What area code is Rock Falls in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 815 | Illinois | 1,706,456 | — |
ZIP codes in the code footprint
Nearby towns and their area codes
Sterling 779, 815Dixon 779, 815Princeton 779, 815Geneseo 309Kewanee 309Rochelle 779, 815East Moline 309La Salle 779, 815
How to dial
Dial 815 + 7 digits for a number in Rock Falls, or +1 815 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.