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).

  • 3127862400 | +1 312-786-2400 Illinois U.S.A.
  • 3127862401 | +1 312-786-2401 Illinois U.S.A.
  • 3127862402 | +1 312-786-2402 Illinois U.S.A.
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  • 3127862424 | +1 312-786-2424 Illinois U.S.A.
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  • 3127862431 | +1 312-786-2431 Illinois U.S.A.
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  • 3127862467 | +1 312-786-2467 Illinois U.S.A.
  • 3127862468 | +1 312-786-2468 Illinois U.S.A.
  • 3127862469 | +1 312-786-2469 Illinois U.S.A.
  • 3127862470 | +1 312-786-2470 Illinois U.S.A.
  • 3127862471 | +1 312-786-2471 Illinois U.S.A.
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  • 3127862473 | +1 312-786-2473 Illinois U.S.A.
  • 3127862474 | +1 312-786-2474 Illinois U.S.A.
  • 3127862475 | +1 312-786-2475 Illinois U.S.A.
  • 3127862476 | +1 312-786-2476 Illinois U.S.A.
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  • 3127862478 | +1 312-786-2478 Illinois U.S.A.
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  • 3127862494 | +1 312-786-2494 Illinois U.S.A.
  • 3127862495 | +1 312-786-2495 Illinois U.S.A.
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  • 3127862497 | +1 312-786-2497 Illinois U.S.A.
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  • 3127862499 | +1 312-786-2499 Illinois U.S.A.