City of Northbrook


815 Area code: Northbrook, Cook - Landline

Directory Numbers

How to dial a U.S. number internationally:

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  • Dial the 10-digit phone number (area code + local number).

  • 8155281000 | +1 815-528-1000 Illinois U.S.A.
  • 8155281001 | +1 815-528-1001 Illinois U.S.A.
  • 8155281002 | +1 815-528-1002 Illinois U.S.A.
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