Union Hill, Illinois Area Code
Union Hill, 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 Union Hill, IL area code information read more about area codes 779 and 815 details and Illinois area codes.
Union Hill, IL is located in Kankakee County and observes the Central Time Zone.
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