Illinois Phone Numbers
-
Area code 217 covers Southern, Central and western parts of Illinois, including Champaign, Springfield and Decatur.
-
The 224 area code serves portions of Northern Illinois, including Lake and McHenry Counties. It was established as an overlay in April 2020.
-
The 309 area code is based in western and central Illinois, covering the cities of Bloomington, Peoria, Moline, Pekin, and Galesburg.
-
312 is an area code for part of Illinois, including Chicago and its surrounding suburbs.
-
The 331 area code is the telephone area code for most of the western suburbs of Chicago, including Aurora, Naperville, and Elgin.
-
447 is a new area code in Illinois starting July 30th, 2019. Covers the same area as 815, covers western and northern parts of the state.
-
The 464 area code is a new area code for northern Illinois, going into effect in 2020. It will cover parts of the eight county Chicago metropolitan area.
-
618 serves the Metro-East area of Illinois surrounding St. Louis, MO, including East St. Louis, Belleville, and Granite City.
-
The 630 area code serves mainly the Chicago suburbs of DuPage County, Kane County, and Will County in Illinois.
-
708 is an area code in Illinois, covering parts of the Chicago metropolitan area.
-
The 730 area code is an overlay of the 312 and 872 codes in the Chicago area of Illinois.
-
773 is the area code for much of Chicago and its suburbs. It includes all of Chicago except some areas on the south and west sides.
-
The 779 area code covers most of northwestern Illinois and serves the cities of Rockford, Freeport, and Dixon.
-
The 815 area code is located in northwestern Illinois, serving the cities of Rockford, Ottawa, Sterling-Rock Falls, Dixon, and DeKalb.
-
The 847 area code is an area code for Northern Illinois, including the suburbs of Chicago, Waukegan, Elgin and Crystal Lake.
-
861 area code is a General Purpose Code used in Texas and is yet to be assigned to any existing area.
-
Area code 872 is an overlay of area codes 312, 773, and 872 that serves Chicago and its suburbs in Illinois.