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).

  • 3125591300 | +1 312-559-1300 Illinois U.S.A.
  • 3125591301 | +1 312-559-1301 Illinois U.S.A.
  • 3125591302 | +1 312-559-1302 Illinois U.S.A.
  • 3125591303 | +1 312-559-1303 Illinois U.S.A.
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  • 3125591311 | +1 312-559-1311 Illinois U.S.A.
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  • 3125591313 | +1 312-559-1313 Illinois U.S.A.
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  • 3125591371 | +1 312-559-1371 Illinois U.S.A.
  • 3125591372 | +1 312-559-1372 Illinois U.S.A.
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  • 3125591378 | +1 312-559-1378 Illinois U.S.A.
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  • 3125591380 | +1 312-559-1380 Illinois U.S.A.
  • 3125591381 | +1 312-559-1381 Illinois U.S.A.
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  • 3125591383 | +1 312-559-1383 Illinois U.S.A.
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