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).

  • 3127242400 | +1 312-724-2400 Illinois U.S.A.
  • 3127242401 | +1 312-724-2401 Illinois U.S.A.
  • 3127242402 | +1 312-724-2402 Illinois U.S.A.
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  • 3127242424 | +1 312-724-2424 Illinois U.S.A.
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  • 3127242431 | +1 312-724-2431 Illinois U.S.A.
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  • 3127242467 | +1 312-724-2467 Illinois U.S.A.
  • 3127242468 | +1 312-724-2468 Illinois U.S.A.
  • 3127242469 | +1 312-724-2469 Illinois U.S.A.
  • 3127242470 | +1 312-724-2470 Illinois U.S.A.
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  • 3127242473 | +1 312-724-2473 Illinois U.S.A.
  • 3127242474 | +1 312-724-2474 Illinois U.S.A.
  • 3127242475 | +1 312-724-2475 Illinois U.S.A.
  • 3127242476 | +1 312-724-2476 Illinois U.S.A.
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  • 3127242478 | +1 312-724-2478 Illinois U.S.A.
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  • 3127242494 | +1 312-724-2494 Illinois U.S.A.
  • 3127242495 | +1 312-724-2495 Illinois U.S.A.
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  • 3127242497 | +1 312-724-2497 Illinois U.S.A.
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