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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
815-975 Belvidere, IL Boone Cell Number
815-977 Rockford, IL Winnebago Landline
815-978 Rockford, IL Winnebago Cell Number
815-979 Rockford, IL Winnebago Cell Number
815-980 Rockford, IL Winnebago Cell Number
815-981 Ottawa, IL La Salle Landline
815-982 Tampico, IL Whiteside Landline
815-983 Rockford, IL Winnebago Cell Number
815-984 Wellington, IL Iroquois Landline
815-985 Rockford, IL Winnebago Cell Number
815-986 Rockford, IL Winnebago Cell Number
815-987 Rockford, IL Winnebago Landline
815-988 Rockford, IL Winnebago Cell Number
815-989 Prophetstown, IL Whiteside Landline
815-990 Freeport, IL Stephenson Cell Number
815-991 Sycamore, IL Dekalb Landline
815-992 Streator, IL La Salle Cell Number
815-993 Oglesby, IL La Salle Cell Number
815-994 Dixon, IL Lee Cell Number
815-995 Dekalb, IL Dekalb 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.