Sterling, IL Area Codes
Sterling is served by area codes 779 and 815. It is in Illinois, Whiteside County. About 20,844 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 779, 815 |
| State / province | Illinois |
| County | Whiteside County |
| Population | 20,844 |
| ZIP codes | 1 |
| Time zone | Central |
| Coordinates | 41.8500, -89.7394 |
What area code is Sterling in?
ZIP codes in the code footprint
Nearby towns and their area codes
Rock Falls 815Dixon 779, 815Freeport 779, 815Geneseo 309Rochelle 779, 815Princeton 779, 815East Moline 309Kewanee 309
How to dial
Dial 779 + 7 digits for a number in Sterling, or +1 779 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.