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).

  • 3128391500 | +1 312-839-1500 Illinois U.S.A.
  • 3128391501 | +1 312-839-1501 Illinois U.S.A.
  • 3128391502 | +1 312-839-1502 Illinois U.S.A.
  • 3128391503 | +1 312-839-1503 Illinois U.S.A.
  • 3128391504 | +1 312-839-1504 Illinois U.S.A.
  • 3128391505 | +1 312-839-1505 Illinois U.S.A.
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  • 3128391551 | +1 312-839-1551 Illinois U.S.A.
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  • 3128391567 | +1 312-839-1567 Illinois U.S.A.
  • 3128391568 | +1 312-839-1568 Illinois U.S.A.
  • 3128391569 | +1 312-839-1569 Illinois U.S.A.
  • 3128391570 | +1 312-839-1570 Illinois U.S.A.
  • 3128391571 | +1 312-839-1571 Illinois U.S.A.
  • 3128391572 | +1 312-839-1572 Illinois U.S.A.
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  • 3128391574 | +1 312-839-1574 Illinois U.S.A.
  • 3128391575 | +1 312-839-1575 Illinois U.S.A.
  • 3128391576 | +1 312-839-1576 Illinois U.S.A.
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  • 3128391578 | +1 312-839-1578 Illinois U.S.A.
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  • 3128391597 | +1 312-839-1597 Illinois U.S.A.
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  • 3128391599 | +1 312-839-1599 Illinois U.S.A.