Starting on July 7, customers in the 618 area code overlay region may be assigned a number in the new 730 area code when they request new service or an additional line. They 730 area code will co ...

A new 730 area code overlaying the current 618 area code will be introduced in southern Illinois next year, the Illinois Commerce Commission announced Wednesday.

CHICAGO -- The Illinois Commerce Commission on Tuesday started wheels in motion to add another area code to the large part of the state now served by 618. But it will be at least one year before ...

Illinois officials say that a new area code will be coming to the southern portion of the state, affecting more than 35 counties beginning in the new year.

The change affects both the 314 and 618 area codes, among others.

10-digit dialing begins this weekend in Illinois for the 618 area code.

If you have these area codes in Missouri: 314, 417, 660, 816, or the Illinois area codes: 618, 309, 708, it’s time to start dialing all ten digits.

Illinois residents with 618, 309 or 708 area codes are being asked to dial 10 digits beginning April 24 to make local and long-distance calls to get in practice for a mandatory change on Oct. 24.