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312: Chicago, the central city area including the Chicago Loop and the Near North Side. 618/730: Southern Illinois, including Carbondale and most of the Metro East region of St. Louis suburbs in Illinois.
Area codes for Illinois, United States, Illinois dial code information. Country dial and city area codes for Illinois Dial code widgets for Illinois.
CityArea CodeDialing CodeAlgonquin847+1 847Alton730+1 730Arlington Heights847+1 847Aurora630+1 630There are 13 active area codes in the state of Illinois. Each of these area codes are listed below. There are two lists that Wirefly provides for the area codes in Illinois. The first table below shows the most populated cities in Illinois with the area codes listed next to them.
View the complete list of all area codes in Illinois.
Illinois area codes map gives information about all the area codes of Illinois state along with their counties list.
Aug 5, 2020 · To find phone numbers, area code information, and area code maps, see our White Pages.
Illinois Area Codes. Illinois has 12 area code (s). Clicking on an area code below will show you the Illinois cities in that area code. AreaCodeLookup.co. Visit AreaCodeLookup.co for reverse phone number lookups, and find area code locations by US phone numbers, city or state. 217. 224. 309. 312. 331. 618. 630. 708. 773. 779. 815. 847.