Area Code 312 Map and Location
Area Code 312 - Cities, neighbourhoods and local features
Area code 312 is located in . That is the approximate area that is served by this exchange.
Chicago- Northbrook
- Wheeling
- Roselle
- La Grange
- Hinsdale
- Unknown
- Bensenville
- BURR RIDGE
- ELGIN
Illinois Area Codes for the Largest Cities