ZIP Code 60632. ZIP Code 60678. ZIP Code 60803.
ZIP Code 60682. Several of these area codes are relatively recent 'overlay' area codes that were added to provide additional phone number capacity.
Illinois Area Code Map Source: Central GMT -06: ZIP Code 60634.
Area code 779 is an overlay area code for area code 815. Toggle navigation. Area code 331 is an overlay area code for area code 630.
Area code 773 is an overlay area code for area code 312. ZIP Code 60647. Editor's Choice.
ZIP Code 60652. As rated by AboutCallingCards.
Area code 779 was created as an overlay to area code 815. ZIP Code 60637.
ZIP Code 60618. ZIP Code 60693. Making outbound calls from Chicago? ZIP Code Database. ZIP Code 60804.
ZIP Code 60615.