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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 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.
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815/779: Northern Illinois outside of the immediate Chicago area including Joliet, Kankakee, LaSalle, DeKalb, and Rockford. Area code 815 was overlaid with area code 779 in 2007. 847/224: North and northwest suburbs of Chicago including all of Lake County, part of McHenry County, northern Cook County, and northeastern Kane County.
List of North American Numbering Plan area codes - Wikipedia. Contents. hide. (Top) Area codes in numerical order. 200–299. 300–399. 400–499. 500–599. 600–699. 700–799. 800–899. 900–999. Area codes by country, state, province, and regions. United States. Canada. Caribbean and Atlantic islands. U.S. Pacific territories. Non-geographic area codes.
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 serves northern Illinois except for the Chicago metro area. It includes the cities of Rockford, Joliet, and DeKalb. It has a single overlay ( 779 ) that serves the same area.
Jan 18, 2011 · Area code 779 serves the state of Illinois. This area code was assigned on February 6th, 2004. On March 17th, 2007 it went into service. 779 is a General Purpose Code. 779 service area does overlap with 815 area codes. Dialing pattern for local calls within the same NPA (area code) is 1+10D. ZIP Codes Served By 779 Area Code. 61101. 61104. 61102.
Area code 815 is located in Illinois. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.
