Monroe Center, Illinois Area Code

Monroe Center, 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 Monroe Center, IL area code information read more about area codes 779 and 815 details and Illinois area codes.

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