815 Area Code Phone Directory

Information for Area Code 815

State: IL
Largest City in Area: ROCKFORD

Where is Area Code 815?

Area code (815) is in the state of IL. Below, are the major cities in the area code (815).

Major Cities in 815

ROCKFORD, IL (715,157)
JOLIET, IL (462,574)
CHICAGO, IL (382,250)
PLAINFIELD, IL (213,045)
CRYSTAL LAKE, IL (185,503)
LOVES PARK, IL (166,252)
DEKALB, IL (162,075)
MCHENRY, IL (160,525)
KANKAKEE, IL (153,935)
LOCKPORT, IL (137,939)

Zip Codes in 815

60928
60929
60930
60931
60934
60935
60938
60939
60940
60941
60944
60945
60946
60950
60951
60953
60954
60955
60956
60958