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See what locations have area code 815

Dialing codes › Reverse area code lookup › 815


Area code "815" is used to dial to the following cities:

  • USA - Illinois - Amboy
  • USA - Illinois - Belvidere (IL)
  • USA - Illinois - Braidwood
  • USA - Illinois - Byron
  • USA - Illinois - Chatsworth
  • USA - Illinois - Chenoa
  • USA - Illinois - Cortland (IL)
  • USA - Illinois - Crest Hill
  • USA - Illinois - Crystal Lake
  • USA - Illinois - DeKalb (IL)
  • USA - Illinois - Dixon (IL)
  • USA - Illinois - Earlville
  • USA - Illinois - East Dubuque
  • USA - Illinois - Fairbury
  • USA - Illinois - Freeport (IL)
  • USA - Illinois - Fulton (IL)


  • USA - Illinois - Galena
  • USA - Illinois - Genoa (IL)
  • USA - Illinois - Gilman
  • USA - Illinois - Harvard
  • USA - Illinois - Joliet
  • USA - Illinois - Kankakee
  • USA - Illinois - Lanark
  • USA - Illinois - LaSalle
  • USA - Illinois - Lockport (IL)
  • USA - Illinois - Loves Park
  • USA - Illinois - Marengo (IL)
  • USA - Illinois - Marseilles
  • USA - Illinois - McHenry
  • USA - Illinois - Mendota (IL)
  • USA - Illinois - Momence
  • USA - Illinois - Morris (IL)
  • USA - Illinois - Morrison
  • USA - Illinois - Mount Carroll
  • USA - Illinois - Oglesby (IL)
  • USA - Illinois - Oregon
  • USA - Illinois - Ottawa (IL)
  • USA - Illinois - Peru
  • USA - Illinois - Polo
  • USA - Illinois - Pontiac
  • USA - Illinois - Princeton (IL)
  • USA - Illinois - Prophetstown
  • USA - Illinois - Rochelle
  • USA - Illinois - Rock Falls
  • USA - Illinois - Rockford
  • USA - Illinois - Sandwich
  • USA - Illinois - Savanna
  • USA - Illinois - South Beloit
  • USA - Illinois - Spring Valley
  • USA - Illinois - Sterling
  • USA - Illinois - Streator
  • USA - Illinois - Sycamore
  • USA - Illinois - Toluca
  • USA - Illinois - Watseka
  • USA - Illinois - Wenona
  • USA - Illinois - Woodstock (IL)


815 is which city code?