Collinsville, Illinois Area Code

Collinsville, IL Area Codes are


Collinsville, IL is currently served by one area code which is area code 618.

In addition to Collinsville, IL area code information read more about area code 618 details and Illinois area codes.

Collinsville, IL is located in Madison County and observes the Central Time Zone.
View our Times by Area Code tool.

Illinois Area Code Map