City of Chicago


312 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).

  • 3127262400 | +1 312-726-2400 Illinois U.S.A.
  • 3127262401 | +1 312-726-2401 Illinois U.S.A.
  • 3127262402 | +1 312-726-2402 Illinois U.S.A.
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  • 3127262468 | +1 312-726-2468 Illinois U.S.A.
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  • 3127262470 | +1 312-726-2470 Illinois U.S.A.
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  • 3127262477 | +1 312-726-2477 Illinois U.S.A.
  • 3127262478 | +1 312-726-2478 Illinois U.S.A.
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