City of Chicago


815 Area code: Chicago, Cook - Landline

Directory Numbers

How to dial a U.S. number internationally:

  • Start with your country's exit code (e.g., 011 for the U.S. or Canada).
  • Dial the U.S. country code (+1).
  • Dial the 10-digit phone number (area code + local number).

  • 8155725100 | +1 815-572-5100 Illinois U.S.A.
  • 8155725101 | +1 815-572-5101 Illinois U.S.A.
  • 8155725102 | +1 815-572-5102 Illinois U.S.A.
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  • 8155725175 | +1 815-572-5175 Illinois U.S.A.
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  • 8155725197 | +1 815-572-5197 Illinois U.S.A.
  • 8155725198 | +1 815-572-5198 Illinois U.S.A.
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