312 Area Code Information
State: IL
Largest City in Area: CHICAGO
Where is Area Code 312? Area code (312) is in the state of IL. The PeopleSearchNow database has 2,211,813 records on file with a phone number in the area code of (312). Below, are the major cities in the area code (312).
Major Cities in 312
- CHICAGO, IL (2,009,539)
- EVANSTON, IL (59,550)
- OAK PARK, IL (47,220)
- NEW YORK, NY (47,102)
- NAPERVILLE, IL (40,576)
- SKOKIE, IL (31,552)
- DES PLAINES, IL (31,472)
- ARLINGTON HEIGHTS, IL (28,329)
- SCHAUMBURG, IL (28,066)
- HIGHLAND PARK, IL (28,054)
Zip Codes in 312
- 60605
- 60607
- 60608
- 60610
- 60611
- 60612
- 60613
- 60614
- 60616
- 60618
- 60619
- 60620
- 60622
- 60625
- 60628
- 60629
- 60640
- 60647
- 60654
- 60657