312 Area Code Phone Number

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312 Area Code

The 312 area code is located within the US. 312 covers this state: IL

Cities within the 312- area code include:

  • Chicago
  • Wheeling
  • Roselle
  • La Grange Park
  • Hinsdale
  • Northbrook

Here are the carriers for 312:

  • Southwestern Bell Mobile Systems
  • Adbeep
  • United States Cellular Corp
  • Heartland Communications
  • American Messaging
  • Broadwing Communications
  • Arch Wireless Holdings
  • Metrocall
  • Blue Licenses Holding
  • Sprint Spectrum
  • T Mobile Usa
  • Illinois Bell Tel Co
  • Level 3 Communications
  • Cellular Paging Usa
  • Beepermart
  • Geotek Communications
  • Multi Computer Systems

Other area codes within the same state (IL) as (312) include:

To find out who owns a specific 312 phone number, run a reverse phone search!

Additional resources:


  312 Reverse Phone Lookup >>

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