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List of Illinois area codes
Area code 312
Chicago metropolitan area
Area codes 708 and 464
List of neighborhoods in Chicago
Area codes 630 and 331
Area code 872. Coordinates: 41°52′48″N 87°37′54″W. All NPAs within Illinois. Area code 872 is a telephone area code in the North American Numbering Plan for Chicago in the U.S. state of Illinois. It is an overlay code for a numbering plan area that comprises those of area codes 312 and 773. The overlay commenced service on November 7 ...
Area code 773