Area codes 630 and 331

Area codes 630 and 331

Area codes 630 and 331 are coterminous area codes under the North American Numbering Plan in the United States that cover a portion of Chicago's suburbs, specifically most of DuPage County in Illinois. This area also covers a small, neighboring portion of far northwestern Cook County, including the villages of Streamwood and Hanover Park. To the west, Kane County is divided between area codes 847 and 224 in the north (including Elgin) and 630 and 331 in the south (including Aurora). To the south, the northern part of Will County and a small part of southern Cook County, specifically, the town of Burr Ridge and parts of Lemont are also included in 630 and 331. It is used in Yorkville, Illinois, as well, which is in southwest exurban Kendall County.

On October 7, 2007, area code 331 overlaid the 630 and 11-digit dialing was implemented for those area codes. Previously, 630 split off from area code 708 in 1996, which itself split off from area code 312 in 1989.

Communities included

* Addison
* Aurora
* Bartlett
* Batavia
* Bensenville
* Big Rock
* Bloomingdale
* Bolingbrook
* Boulder Hill
* Bristol
* Burr Ridge
* Campton Hills
* Carol Stream
* Clarendon Hills
* Darien
* Downers Grove
* Elburn
* Elmhurst
* Geneva
* Glendale Heights
* Glen Ellyn
* Hanover Park
* Hinsdale
* Itasca
* Kaneville
* Lemont
* Lily Lake
* Lisle
* Lombard
* Maple Park
* Medinah
* Montgomery
* Mooseheart
* Naperville
* North Aurora
* Oak Brook
* Oakbrook Terrace
* Oswego
* Plano
* Roselle
* St. Charles
* Streamwood
* Sugar Grove
* Villa Park
* Virgil
* Warrenville
* Wayne
* West Chicago
* Westmont
* Wheaton
* Willowbrook
* Winfield
* Wood Dale
* Woodridge
* Yorkville

ee also

* List of NANP area codes
* List of Illinois area codes

External links

* [http://www.nanpa.com/area_code_maps/display.html?il Map of Illinois area codes] at North American Numbering Plan Administration's website

Area Code Box 0
State = IL
This = area codes 630 and 331
N = 847/224
W = 815/779
E = 708
S = 815/779


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