Area Code 331

331 is the area code for portions of Chicago's near and far western suburbs. It is overlaid with area code 630 making 10-digit dialing required in these areas.
Area Code : 331
State : Illinois
Timezoon : Central
Major City : Elmhurst
 
Main Cities on 331
Addison, IL ; Aurora, IL ; Bartlett, IL ; Batavia, IL ; Bensenville, IL ; Bloomingdale, IL ; Bolingbrook, IL ; Carol Stream, IL ; Darien, IL ; Downers Grove, IL ; Elmhurst, IL ; Glen Ellyn, IL ; Glendale Heights, IL ; Hanover Park, IL ; Lisle, IL ; Lombard, IL ; Naperville, IL ; Roselle, IL ; St. Charles, IL ; Streamwood, IL ; Villa Park, IL ; West Chicago, IL ; Westmont, IL ; Wheaton, IL ; Woodridge, IL
 
 
PrefixLinksPrimary CityService ProviderLine Type
999(331) 999- Oswego, ILCygnus Telecommunications CorporationUnknown
888(331) 888- Warrenville, ILCygnus Telecommunications CorporationUnknown
826(331) 826- Elmhurst, ILSprint Spectrum L.p.Unknown
825(331) 825- Geneva, ILDigital Network Access CommunicationsUnknown
777(331) 777- Downers Grove, ILCygnus Telecommunications CorporationUnknown
725(331) 725- Oswego, ILNew Cingular Wireless PCSUnknown
684(331) 684- Aurora, ILSigecomUnknown
645(331) 645- Elmhurst, ILSprint Spectrum L.p.Unknown
643(331) 643- Aurora, ILSprint Spectrum L.p.Unknown
642(331) 642- Elmhurst, ILBandwidth.com ClecUnknown
625(331) 625- Downers Grove, ILCellco Partnership DBA Verizon WirelessUnknown
591(331) 591- Elmhurst, ILUnknown
588(331) 588- Saint Charles, ILNew Cingular Wireless PCSUnknown
575(331) 575- Aurora, ILSprint Spectrum L.p.Unknown
553(331) 553- Unknown
552(331) 552- Unknown
551(331) 551- Lombard, ILDenali Spectrum LicenseUnknown
481(331) 481- Downers Grove, ILCellco Partnership DBA Verizon WirelessUnknown
472(331) 472- Naperville, ILT-mobile UsaUnknown
465(331) 465- West Chicago, ILNew Cingular Wireless PCSUnknown
462(331) 462- Lombard, ILXo IllinoisUnknown
457(331) 457- Naperville, ILCellco Partnership DBA Verizon WirelessUnknown
456(331) 456- Roselle, ILGlobalcom-ilUnknown
454(331) 454- Aurora, ILDenali Spectrum LicenseUnknown
452(331) 452- Aurora, ILCellco Partnership DBA Verizon WirelessUnknown
444(331) 444- Naperville, ILCygnus Telecommunications CorporationUnknown
442(331) 442- Saint Charles, ILCellco Partnership DBA Verizon WirelessUnknown
431(331) 431- Aurora, ILBandwidth.com ClecUnknown
425(331) 425- Aurora, ILT-mobile UsaUnknown
422(331) 422- Saint Charles, ILLevel 3 CommunicationsUnknown
333(331) 333- Naperville, ILDenali Spectrum LicenseUnknown
332(331) 332- Naperville, ILDenali Spectrum LicenseUnknown
330(331) 330- Oswego, ILDenali Spectrum LicenseUnknown
262(331) 262- Aurora, ILSprint Spectrum L.p.Unknown
248(331) 248- Geneva, ILComcast Phone Of Illinois DBA ComcoUnknown
223(331) 223- Saint Charles, ILDenali Spectrum LicenseUnknown
222(331) 222- Saint Charles, ILDenali Spectrum LicenseUnknown
221(331) 221- Elmhurst, ILAmeritech IllinoisUnknown
220(331) 220- Sprint Spectrum L.p.Unknown
200(331) 200- T-mobile UsaUnknown