Area Code 773

What is an Area Code? An area code is a section of a telephone number that denotes the broad area that the phone receiving the call is based in. Area codes were first introduced circa 1947 for operator use only. Area codes are three-digit numbers that represent Numbering Plan Areas (NPAs). The area code for a particular city or region is the series of numbers that you have to dial before someone’s number if you are making a phone call to that place from a different area. Area code 773 serves the state of Illinois.

The table below shows the towns and cities that use area code 773

Chicago
Summit Argo
Riverdale
Bensenville
Park Ridge
Des Plaines
Mount Prospect
Calumet City
Lincolnwood
Evergreen Park
Cicero
Elk Grove Village
Hinsdale
Schiller Park
River Grove
Elmwood Park
Harwood Heights
Oak Park
Wood Dale
Evanston
Oak Brook
Arlington Heights
Dolton