If you’re located in Cook County or Will County, Illinois a new area code overlay was recently implemented near you. Here’s what you need to know:
An area code overlay is the addition of another area code to the same geographic region as existing area codes. An overlay does not require telephone users to change their existing area code or phone number. It also does not change the way you dial calls. You’ll still use 10-digit dialing; dial the area code and phone number for all local calls, just as you do now.
As of January 21, 2022, customers in the 708 area code overlay region may be assigned a number beginning with the new 464 area code when they request new service or an additional line. Customers who receive the 464 area code must dial the area code and phone number for all local calls, just like customers with telephone numbers from the 708 area codes do today.
Customers in the overlay region should:
The following will remain the same for customers nationwide:
If you have questions regarding this notice, please visit the Illinois Commerce Commission website.
