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Area Code 815 - Chicago, IL

Below is the information for Area Code 815
General Information for Area Code 815
Country United States
State/Province Illinois
Major City Chicago
Time Zone Central

Phone directory of numbers beginning with Area Code 815 Prefixes

Prefix Primary City County Phone Type
815-402 Galena, IL Jo Daviess Landline
815-403 Mchenry, IL Mchenry Cell Number
815-404 Crystal Lake, IL Mchenry Cell Number
815-405 Joliet, IL Will Cell Number
815-406 Byron, IL Ogle Landline
815-407 Romeoville, IL Will Landline
815-408 Utica, IL La Salle Landline
815-409 Joliet, IL Will Cell Number
815-410 La Salle, IL La Salle Landline
815-412 Frankfort, IL Will Landline
815-413 Morris, IL Grundy Landline
815-414 Earlville, IL La Salle Cell Number
815-415 Seneca, IL La Salle Landline
815-416 Morris, IL Grundy Landline
815-417 Braidwood, IL Will Landline
815-418 Manhattan, IL Will Landline
815-419 Pontiac, IL Livingston Landline
815-420 Malta, IL Dekalb Landline
815-421 Herscher, IL Kankakee Landline
815-422 St Anne, IL Kankakee Landline
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Location Details

Area code is a type of numbering scheme used in telecommunication. It divides the territories of its member countries, the code is a three-digit code. The digits 0 and 1 applied for central office codes. Other digits were applied into geographic areas of the service territory.

  • 200: easily recognizable code (ERC)
  • 201: New Jersey
  • 202: Washington, D.C.
  • 203: Connecticut
    • and so on.

If you want to get more informatons of the areacode, Input an areacode into the above search area, get what you want.