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).

  • 3127394000 | +1 312-739-4000 Illinois U.S.A.
  • 3127394001 | +1 312-739-4001 Illinois U.S.A.
  • 3127394002 | +1 312-739-4002 Illinois U.S.A.
  • 3127394003 | +1 312-739-4003 Illinois U.S.A.
  • 3127394004 | +1 312-739-4004 Illinois U.S.A.
  • 3127394005 | +1 312-739-4005 Illinois U.S.A.
  • 3127394006 | +1 312-739-4006 Illinois U.S.A.
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  • 3127394008 | +1 312-739-4008 Illinois U.S.A.
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  • 3127394010 | +1 312-739-4010 Illinois U.S.A.
  • 3127394011 | +1 312-739-4011 Illinois U.S.A.
  • 3127394012 | +1 312-739-4012 Illinois U.S.A.
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  • 3127394015 | +1 312-739-4015 Illinois U.S.A.
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  • 3127394020 | +1 312-739-4020 Illinois U.S.A.
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  • 3127394033 | +1 312-739-4033 Illinois U.S.A.
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  • 3127394048 | +1 312-739-4048 Illinois U.S.A.
  • 3127394049 | +1 312-739-4049 Illinois U.S.A.
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  • 3127394051 | +1 312-739-4051 Illinois U.S.A.
  • 3127394052 | +1 312-739-4052 Illinois U.S.A.
  • 3127394053 | +1 312-739-4053 Illinois U.S.A.
  • 3127394054 | +1 312-739-4054 Illinois U.S.A.
  • 3127394055 | +1 312-739-4055 Illinois U.S.A.
  • 3127394056 | +1 312-739-4056 Illinois U.S.A.
  • 3127394057 | +1 312-739-4057 Illinois U.S.A.
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  • 3127394066 | +1 312-739-4066 Illinois U.S.A.
  • 3127394067 | +1 312-739-4067 Illinois U.S.A.
  • 3127394068 | +1 312-739-4068 Illinois U.S.A.
  • 3127394069 | +1 312-739-4069 Illinois U.S.A.
  • 3127394070 | +1 312-739-4070 Illinois U.S.A.
  • 3127394071 | +1 312-739-4071 Illinois U.S.A.
  • 3127394072 | +1 312-739-4072 Illinois U.S.A.
  • 3127394073 | +1 312-739-4073 Illinois U.S.A.
  • 3127394074 | +1 312-739-4074 Illinois U.S.A.
  • 3127394075 | +1 312-739-4075 Illinois U.S.A.
  • 3127394076 | +1 312-739-4076 Illinois U.S.A.
  • 3127394077 | +1 312-739-4077 Illinois U.S.A.
  • 3127394078 | +1 312-739-4078 Illinois U.S.A.
  • 3127394079 | +1 312-739-4079 Illinois U.S.A.
  • 3127394080 | +1 312-739-4080 Illinois U.S.A.
  • 3127394081 | +1 312-739-4081 Illinois U.S.A.
  • 3127394082 | +1 312-739-4082 Illinois U.S.A.
  • 3127394083 | +1 312-739-4083 Illinois U.S.A.
  • 3127394084 | +1 312-739-4084 Illinois U.S.A.
  • 3127394085 | +1 312-739-4085 Illinois U.S.A.
  • 3127394086 | +1 312-739-4086 Illinois U.S.A.
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  • 3127394089 | +1 312-739-4089 Illinois U.S.A.
  • 3127394090 | +1 312-739-4090 Illinois U.S.A.
  • 3127394091 | +1 312-739-4091 Illinois U.S.A.
  • 3127394092 | +1 312-739-4092 Illinois U.S.A.
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  • 3127394094 | +1 312-739-4094 Illinois U.S.A.
  • 3127394095 | +1 312-739-4095 Illinois U.S.A.
  • 3127394096 | +1 312-739-4096 Illinois U.S.A.
  • 3127394097 | +1 312-739-4097 Illinois U.S.A.
  • 3127394098 | +1 312-739-4098 Illinois U.S.A.
  • 3127394099 | +1 312-739-4099 Illinois U.S.A.