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).

  • 3127391200 | +1 312-739-1200 Illinois U.S.A.
  • 3127391201 | +1 312-739-1201 Illinois U.S.A.
  • 3127391202 | +1 312-739-1202 Illinois U.S.A.
  • 3127391203 | +1 312-739-1203 Illinois U.S.A.
  • 3127391204 | +1 312-739-1204 Illinois U.S.A.
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  • 3127391209 | +1 312-739-1209 Illinois U.S.A.
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  • 3127391231 | +1 312-739-1231 Illinois U.S.A.
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  • 3127391234 | +1 312-739-1234 Illinois U.S.A.
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  • 3127391266 | +1 312-739-1266 Illinois U.S.A.
  • 3127391267 | +1 312-739-1267 Illinois U.S.A.
  • 3127391268 | +1 312-739-1268 Illinois U.S.A.
  • 3127391269 | +1 312-739-1269 Illinois U.S.A.
  • 3127391270 | +1 312-739-1270 Illinois U.S.A.
  • 3127391271 | +1 312-739-1271 Illinois U.S.A.
  • 3127391272 | +1 312-739-1272 Illinois U.S.A.
  • 3127391273 | +1 312-739-1273 Illinois U.S.A.
  • 3127391274 | +1 312-739-1274 Illinois U.S.A.
  • 3127391275 | +1 312-739-1275 Illinois U.S.A.
  • 3127391276 | +1 312-739-1276 Illinois U.S.A.
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  • 3127391278 | +1 312-739-1278 Illinois U.S.A.
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  • 3127391296 | +1 312-739-1296 Illinois U.S.A.
  • 3127391297 | +1 312-739-1297 Illinois U.S.A.
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