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Area codes 847 (northern suburbs) and 630 (western suburbs) were created from a split of suburban area code 708 in 1996. Shortly after in 1996, area code 773 was created for the residential parts of the city of Chicago, while downtown kept area code 312.
The city of Chicago is in the state of Illinois. It has the following active area codes: 217. 224. 312. 630. 708. 773. 815. 847. 872. Chicago, IL has the following Exchanges (NXX) List of all area codes in Chicago, IL. Chicago, IL area code map, list, and phone lookup.
Chicago, Illinois Area Codes. Illinois State Flag. To call Chicago, Illinois (United States) select the country you're calling from, then dial: Exit Code + 1 + (224 or 312 or 630 or 708 or 773 or 847 or 872) + The Number. * Do not dial the plus (+) symbols.
Area codes in Chicago, Illinois. Get the area’s map, current time, and prefixes for Chicago
The 312 area code is Chicago’s historic telephone code, established by the North American Numbering Plan Administrator (NANPA) in 1947. It is one of the leading telephone codes for this central business area of Chicago, including downtown and the Chicago Loop, with its vibrant music scene and great architecture.
Area code 312 is a telephone area code in the North American Numbering Plan for the city of Chicago, including downtown, the Chicago Loop, and its immediate environs. The numbering plan area is completely surrounded by area code 773, which serves the rest of Chicago.
1 lis 2024 · Area Code 312 is located in Illinois. It covers 16 cities, including Chicago, Cicero, Schaumburg, Glenview, and Buffalo Grove. It also covers 3 counties, including Cook County, Lake County, Dupage County. A full list of covered cities and counties is below including its prefix and population coverage.
