Area code "779" is used to dial to the following cities:

  • USA - Illinois - Amboy
  • USA - Illinois - Braidwood
  • USA - Illinois - Chatsworth
  • USA - Illinois - Crystal Lake
  • USA - Illinois - Freeport
  • USA - Illinois - Gilman
  • USA - Illinois - Harvard
  • USA - Illinois - Joliet
  • USA - Illinois - Kankakee
  • USA - Illinois - LaSalle
  • USA - Illinois - Lockport

  • USA - Illinois - Mendota
  • USA - Illinois - Morris
  • USA - Illinois - Ottawa
  • USA - Illinois - Sandwich
  • USA - Illinois - South Beloit
  • USA - Illinois - Streator
  • USA - Illinois - Watseka
  • USA - Illinois - Woodstock