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).

  • 3128361400 | +1 312-836-1400 Illinois U.S.A.
  • 3128361401 | +1 312-836-1401 Illinois U.S.A.
  • 3128361402 | +1 312-836-1402 Illinois U.S.A.
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  • 3128361451 | +1 312-836-1451 Illinois U.S.A.
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  • 3128361467 | +1 312-836-1467 Illinois U.S.A.
  • 3128361468 | +1 312-836-1468 Illinois U.S.A.
  • 3128361469 | +1 312-836-1469 Illinois U.S.A.
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  • 3128361471 | +1 312-836-1471 Illinois U.S.A.
  • 3128361472 | +1 312-836-1472 Illinois U.S.A.
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  • 3128361474 | +1 312-836-1474 Illinois U.S.A.
  • 3128361475 | +1 312-836-1475 Illinois U.S.A.
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  • 3128361478 | +1 312-836-1478 Illinois U.S.A.
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  • 3128361497 | +1 312-836-1497 Illinois U.S.A.
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  • 3128361499 | +1 312-836-1499 Illinois U.S.A.