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FutureStarr815 Area Code:
Area codes 815 and 779 are telephone area codes for most of northern Illinois outside the Chicago and Quad Cities areas. It also serves many of the outer western, southwestern, and northwestern suburbs of Chicago. (Source: en.wikipedia.org)
The 815 area code belongs to the state of Illinois (IL) and some of the locations covered are Joliet, Rockford and more:
815 Area Code is part of 15 counties in the state of Illinois. There are around 206 cities in the 815 area code. The 815 area code is located in the EST timezone. Illinois has an avarage population of 12,947,252 spread between the coordinates of +40.349457 Latitude and -88.986137 Longitude. (Source:
Area code 815 was officially put into service. In 1957 area code 815 was split, along with a portion of area code 217, to form area code 309. In 2007 area code 815 was overlaid with area code 779.
Area code 815 is the phone area code for most northern Illinois outside the Chicago area and Quad Cities. It also serves some of Chicago's western suburbs.
Area codes 815 and 779 are telephone area codes for most of northern Illinois outside the Chicago and Quad Cities areas. It also serves many of the outer western, southwestern, and northwestern suburbs of Chicago.
815 was one of the four original Illinois area codes set up in 1947. It was split in 1957, when most of its western portion, including most of the Illinois side of the Quad Cities, was combined with part of the northern portion of area code 217 to form area code 309.