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).

  • 3125591500 | +1 312-559-1500 Illinois U.S.A.
  • 3125591501 | +1 312-559-1501 Illinois U.S.A.
  • 3125591502 | +1 312-559-1502 Illinois U.S.A.
  • 3125591503 | +1 312-559-1503 Illinois U.S.A.
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  • 3125591511 | +1 312-559-1511 Illinois U.S.A.
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  • 3125591570 | +1 312-559-1570 Illinois U.S.A.
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  • 3125591573 | +1 312-559-1573 Illinois U.S.A.
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  • 3125591578 | +1 312-559-1578 Illinois U.S.A.
  • 3125591579 | +1 312-559-1579 Illinois U.S.A.
  • 3125591580 | +1 312-559-1580 Illinois U.S.A.
  • 3125591581 | +1 312-559-1581 Illinois U.S.A.
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