City of Chicago


815 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).

  • 8155731200 | +1 815-573-1200 Illinois U.S.A.
  • 8155731201 | +1 815-573-1201 Illinois U.S.A.
  • 8155731202 | +1 815-573-1202 Illinois U.S.A.
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  • 8155731234 | +1 815-573-1234 Illinois U.S.A.
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  • 8155731275 | +1 815-573-1275 Illinois U.S.A.
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  • 8155731278 | +1 815-573-1278 Illinois U.S.A.
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  • 8155731297 | +1 815-573-1297 Illinois U.S.A.
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  • 8155731299 | +1 815-573-1299 Illinois U.S.A.