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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
815-241 Northbrook, IL Cook Cell Number
815-242 Rockford, IL Winnebago Cell Number
815-243 Rockford, IL Winnebago Cell Number
815-244 Mt Carroll, IL Carroll Landline
815-245 Woodstock, IL Mchenry Cell Number
815-246 Earlville, IL La Salle Landline
815-247 Pecatonica, IL Winnebago Landline
815-248 Durand, IL Winnebago Landline
815-249 Grand Ridge, IL La Salle Landline
815-250 La Salle, IL La Salle Landline
815-251 Rock Falls, IL Whiteside Landline
815-252 Oglesby, IL La Salle Cell Number
815-253 Kempton, IL Ford Landline
815-254 Plainfield, IL Will Landline
815-255 Minooka, IL Grundy Landline
815-256 Stelle, IL Ford Landline
815-257 Streator, IL La Salle Cell Number
815-258 Joliet, IL Will Cell Number
815-259 Thomson, IL Carroll Landline
815-260 Joliet, IL Will Cell Number
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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.