Area Code 312 Phone Directory
Phone Numbers that start with (312) 3XX-XXXX
- (312) 300-xxxx
- (312) 301-xxxx
- (312) 302-xxxx
- (312) 303-xxxx
- (312) 304-xxxx
- (312) 305-xxxx
- (312) 306-xxxx
- (312) 307-xxxx
- (312) 308-xxxx
- (312) 309-xxxx
- (312) 310-xxxx
- (312) 312-xxxx
- (312) 313-xxxx
- (312) 314-xxxx
- (312) 315-xxxx
- (312) 316-xxxx
- (312) 317-xxxx
- (312) 318-xxxx
- (312) 319-xxxx
- (312) 320-xxxx
- (312) 321-xxxx
- (312) 322-xxxx
- (312) 323-xxxx
- (312) 324-xxxx
- (312) 325-xxxx
Information for Area Code 312
- State: IL
- Largest City: CHICAGO
Where is Area Code 312?
Area code (312) is in the state of IL. Below, are the major cities in the area code (312).Other (312) xxx-xxxx Numbers
Major Cities in Area Code 312
- Rank:2009539
- Chicago, IL
- Rank:59550
- Evanston, IL
- Rank:47220
- Oak Park, IL
- Rank:47102
- New York, NY
- Rank:40576
- Naperville, IL
- Rank:31552
- Skokie, IL
- Rank:31472
- Des Plaines, IL
- Rank:28329
- Arlington Heights, IL
- Rank:28066
- Schaumburg, IL
- Rank:28054
- Highland Park, IL
- Rank:27987
- Los Angeles, CA
- Rank:27741
- Glenview, IL
- Rank:26608
- Oak Lawn, IL
- Rank:26061
- Milwaukee, WI
- Rank:25201
- Northbrook, IL
- Rank:24693
- Cicero, IL
- Rank:24382
- Calumet City, IL
- Rank:24012
- Berwyn, IL
- Rank:22499
- Aurora, IL
- Rank:22226
- Palatine, IL
Zip codes in Area Code 312
- 60601
- 60602
- 60603
- 60604
- 60605
- 60606
- 60607
- 60608
- 60609
- 60610
- 60611
- 60612
- 60613
- 60614
- 60615
- 60616
- 60617
- 60618
- 60619
- 60620
- 60621