Walnut, Illinois Area Code
Walnut, IL is officially utilizing an area code overlay in which area codes 779 and 815 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Walnut, IL area code information read more about area codes 779 and 815 details and Illinois area codes.
Walnut, IL is located in Bureau County and observes the Central Time Zone.
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