Columbia, IL Area Codes
Columbia is served by area codes 618 and 730. It is in Illinois, Monroe County. About 14,154 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 618, 730 |
| State / province | Illinois |
| County | Monroe County |
| Population | 14,154 |
| ZIP codes | 1 |
| Time zone | Central |
| Coordinates | 38.4339, -90.2119 |
What area code is Columbia in?
ZIP codes in the code footprint
Nearby towns and their area codes
Waterloo 618East Saint Louis 618, 730Belleville 618, 730Fairview Heights 618, 730O Fallon 618, 730Granite City 618, 730Collinsville 618, 730Mascoutah 618
How to dial
Dial 618 + 7 digits for a number in Columbia, or +1 618 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.