Learn about the 618 area code, including its location, cities, time zone, introduction date, and related area codes.
618 Area Code Details
Major Cities in the 618 Area Code
The 618 area code is associated with the following cities and communities:
- Belleville
- Carbondale
- Collinsville
- East Alton
- East Saint Louis
- Edwardsville
- Granite City
- O'Fallon
Where Is Area Code 618 Located?
The 618 area code serves communities in Illinois. The exact communities and numbering assignments can change as telephone numbering resources are updated.
618 Area Code Time Zone
The 618 area code is associated with the Central time zone.
When Was 618 Area Code Introduced?
The 618 area code was introduced in 01-Jan-1947.
How to Call a 618 Area Code Number
For a call within the same numbering plan, dial the required local number according to your carrier’s dialing rules. For calls from outside the United States, use the United States country code (+1), followed by the area code and seven-digit telephone number.
Related Area Codes
618 Area Code FAQ
What state is 618 area code in?
The 618 area code is associated with Illinois.
What time zone is 618 area code in?
The 618 area code is associated with Central.
What cities use 618 area code?
Belleville|Carbondale|Collinsville|East Alton|East Saint Louis|Edwardsville|Granite City|O'Fallon
More Questions About Area Code 618
What state is area code 618 in?
Area code 618 is associated with Illinois.
What time zone is area code 618 in?
The listed time zone for area code 618 is Central.