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).

  • 3122981300 | +1 312-298-1300 Illinois U.S.A.
  • 3122981301 | +1 312-298-1301 Illinois U.S.A.
  • 3122981302 | +1 312-298-1302 Illinois U.S.A.
  • 3122981303 | +1 312-298-1303 Illinois U.S.A.
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  • 3122981310 | +1 312-298-1310 Illinois U.S.A.
  • 3122981311 | +1 312-298-1311 Illinois U.S.A.
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  • 3122981313 | +1 312-298-1313 Illinois U.S.A.
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  • 3122981318 | +1 312-298-1318 Illinois U.S.A.
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  • 3122981371 | +1 312-298-1371 Illinois U.S.A.
  • 3122981372 | +1 312-298-1372 Illinois U.S.A.
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