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815 Area Code located in Illinois, including 196 cities, 26 counties, 1 time zone, map, Census demographics, and 782 active prefixes.
Find 815 area code details including city, time zone, and map. Lookup area code 815 phone number, name, and location.
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
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.
Current time: 3:06pm. Country: US. Current Overlays: 779 / 815. Timeline: - 1947: Area code 815 was established in Illinois. - 1957: Area code 815 was split, and part of it, along with a part of area code 217, was used to create area code 309.
Rockford. Most people travel to Joliet in order to see fast cars or peddle their bicycles through a picturesque landscape. The Joliet, IL area code has a reputation that stems from its NASCAR affiliation. For instance, the Chicagoland Speedway is located in the 815 area code, and attracts thousands of spectators to its annual races.
815 Area code map Where is the area code 815 located in Illinois, United States? Area Code 815 coverage is shown in green.