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).

  • 3123610100 | +1 312-361-0100 Illinois U.S.A.
  • 3123610101 | +1 312-361-0101 Illinois U.S.A.
  • 3123610102 | +1 312-361-0102 Illinois U.S.A.
  • 3123610103 | +1 312-361-0103 Illinois U.S.A.
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  • 3123610111 | +1 312-361-0111 Illinois U.S.A.
  • 3123610112 | +1 312-361-0112 Illinois U.S.A.
  • 3123610113 | +1 312-361-0113 Illinois U.S.A.
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  • 3123610115 | +1 312-361-0115 Illinois U.S.A.
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  • 3123610123 | +1 312-361-0123 Illinois U.S.A.
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  • 3123610170 | +1 312-361-0170 Illinois U.S.A.
  • 3123610171 | +1 312-361-0171 Illinois U.S.A.
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  • 3123610174 | +1 312-361-0174 Illinois U.S.A.
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  • 3123610176 | +1 312-361-0176 Illinois U.S.A.
  • 3123610177 | +1 312-361-0177 Illinois U.S.A.
  • 3123610178 | +1 312-361-0178 Illinois U.S.A.
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  • 3123610180 | +1 312-361-0180 Illinois U.S.A.
  • 3123610181 | +1 312-361-0181 Illinois U.S.A.
  • 3123610182 | +1 312-361-0182 Illinois U.S.A.
  • 3123610183 | +1 312-361-0183 Illinois U.S.A.
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