312 Area Code Phone Directory

Information for Area Code 312

State: IL
Largest City in Area: 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).

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

60601
60602
60603
60604
60605
60606
60607
60608
60609
60610
60611
60612
60613
60614
60615
60616
60617
60618
60619
60620