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Area code 708 was split off from area code 312 on November 11, 1989, and once covered almost all of Chicago's suburbs on the Illinois side. In 1996, it was reduced to its current size in a three-way split. The northern suburbs became area code 847, while the western suburbs became area code 630. Area code 464 is being reserved as an overlay area code for 708 to provide additional numbering options for this area.
Area code 708 was Illinois' first new area code since 309 was created in 1957 and the second new code for the state since the NANP went online in 1947.
- Map of Illinois area codes at North American Numbering Plan Administration's website
- List of exchanges from AreaCodeDownload.com, 708 Area Code
|North: 847/224, 773|
|West: 815/779, 630/331||area codes 708||East: 219, 773/872|
|Indiana area codes: 219, 260, 317/463, 574, 765, 812/930|
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