Illinois area codes
Tap a code for its cities, time zone, local time and legal calling hours.
Illinois
217Springfield, Decatur224Northbrook, Des Plaines309Peoria, Bloomington312Chicago, Wheeling331Aurora, Naperville447Danville, Springfield464Forest Park, La Grange618Collinsville, Carbondale630Roselle, Naperville708La Grange, Chicago Heights730Centralia, Herrin773Chicago779Rockford, Joliet815Rockford, Joliet847Northbrook, Roselle861Peoria, Pekin872Chicago