Highland, IL Area Codes
Highland is served by area code 618. It is in Illinois, Madison County. About 16,205 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 618 |
| State / province | Illinois |
| County | Madison County |
| Population | 16,205 |
| ZIP codes | 1 |
| Time zone | Central |
| Coordinates | 38.7553, -89.6673 |
What area code is Highland in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 618 | Illinois | 1,184,182 | — |
ZIP codes in the code footprint
Nearby towns and their area codes
Troy 618, 730Greenville 618Glen Carbon 618Edwardsville 618O Fallon 618, 730Collinsville 618, 730Mascoutah 618Fairview Heights 618, 730
How to dial
Dial 618 + 7 digits for a number in Highland, or +1 618 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.