618 Area Code in Illinois Start With 5
Enter the last 6 digits to find that number in East Alton, Illinois.
Information for Area Code 618
Country: United States
Cities in Area: East Alton, Belleville, Carbondale, Collinsville, East Saint Louis, Edwardsville, Granite City, O'Fallon
Where is Area Code 618?
Area code (618) is in the state of Illinois, and there are 8 cities in this area code.