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815 Area Code Phone Directory

Phone Prefixes in the 815 Area Code

(815) 2XX (815) 3XX (815) 4XX (815) 5XX (815) 6XX (815) 7XX (815) 8XX (815) 9XX

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).

Area Codes Starting with 8

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

60959