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Area codes 815 and 779 are telephone area codes in the North American Numbering Plan (NANP) for most of northern Illinois outside the Quad Cities areas. It also serves the Joliet area and some of Chicago’s western and northwestern suburbs. 815 was one of the four original Illinois area codes set up in 1947.
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Area code 815 was overlaid with area code 779 in 2007....
- Area code 815
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Area codes 815 and 779 are telephone area codes for most of northern Illinois outside the Chicago and Quad Cities areas. It also serves the Joliet area and some of Chicago’s western and northwestern exurbs. 815 was one of the four original Illinois area codes set up in 1947.
Area code 815 is located in Illinois. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.
815 is an area code located in the state of Illinois, US. The largest city it serves is Rockford. Location, time zone and map of the 815 area code. Local time. 5:24:59 PM, Friday 24, May 2024 CDT. Time difference to GMT/UTC. Daylight Saving Time 2024 (Summer Time) DST starts on Sunday 10 March 2024, 02:00. DST ends on Sunday 03 November 2024, 02:00
Area code 815 serves the state of Illinois. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 815 is a General Purpose Code. 815 service area does overlap with 779 area codes. Dialing pattern for local calls within the same NPA (area code) is 1+10D.
