Waterloo, Illinois Area Code

Waterloo, IL Area Codes are

618 and 730

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

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

Waterloo, IL is located in Monroe County and observes the Central Time Zone.
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Illinois Area Code Map