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Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay .
- 368, 403, 568, 587, 780, 825
- 204, 431, 584
- 236, 250, 257, 604, 672, 778
- 428, 506
Chicago, IL has the following Exchanges (NXX) List of all area codes in Chicago, IL. Chicago, IL area code map, list, and phone lookup.
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.
Just enter the area code in the search box to see a map of an individual area code plus the time zone, current time, history, and more.
Lookup area code information for CHICAGO, IL. Get the NPA NXX (area code and prefix) as well as much more data for CHICAGO, IL.
- 2,138
- 22,757
- 1,878
- 18,852
* 312: Chicago, the central city area including the Chicago Loop and the Near North Side. * 618: Southern Illinois, including Carbondale and most of the Metro East region of St. Louis suburbs in Illinois.
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Area codes in Chicago, Illinois. Get the area’s map, current time, and prefixes for Chicago.
