Granite City, Illinois Area Code

Granite City, IL Area Codes are

618 and 730

Granite City, IL is officially utilizing two area codes which are area codes 618 and 730.

In addition to Granite City, IL area code information read more about area code 618 details, area code 730 details, and Illinois area codes.

Granite City, IL is located in Madison County and observes the Central Time Zone.
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Illinois Area Code Map