Sandwich, IL Area Codes
Sandwich is served by area codes 779 and 815. It is in Illinois, DeKalb County. About 11,721 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 779, 815 |
| State / province | Illinois |
| County | DeKalb County |
| Population | 11,721 |
| ZIP codes | 1 |
| Time zone | Central |
| Coordinates | 41.6487, -88.6347 |
What area code is Sandwich in?
ZIP codes in the code footprint
Nearby towns and their area codes
Plano 331, 630Yorkville 331, 630Sugar Grove 331, 630Oswego 331, 630Elburn 331, 630Montgomery 331, 630North Aurora 331, 630Dekalb 779, 815
How to dial
Dial 779 + 7 digits for a number in Sandwich, or +1 779 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.