Alton, IL Area Codes
Alton is served by area codes 618 and 730. It is in Illinois, Madison County. About 29,543 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 618, 730 |
| State / province | Illinois |
| County | Madison County |
| Population | 29,543 |
| ZIP codes | 1 |
| Time zone | Central |
| Coordinates | 38.9392, -90.1349 |
What area code is Alton in?
ZIP codes in the code footprint
Nearby towns and their area codes
East Alton 618Bethalto 618Godfrey 618Wood River 618Edwardsville 618Glen Carbon 618Jerseyville 618Granite City 618, 730
How to dial
Dial 618 + 7 digits for a number in Alton, or +1 618 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.