Collinsville, IL Area Codes
Collinsville is served by area codes 618 and 730. It is in Illinois, Madison County. About 31,648 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 618, 730 |
| State / province | Illinois |
| County | Madison County |
| Population | 31,648 |
| ZIP codes | 1 |
| Time zone | Central |
| Coordinates | 38.6822, -89.9806 |
What area code is Collinsville in?
ZIP codes in the code footprint
Nearby towns and their area codes
Glen Carbon 618Fairview Heights 618, 730Troy 618, 730O Fallon 618, 730Granite City 618, 730Edwardsville 618East Saint Louis 618, 730Belleville 618, 730
How to dial
Dial 618 + 7 digits for a number in Collinsville, or +1 618 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.