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331 Area Code

About Area Code 331

State: Illinois
Major City: Aurora
Timezone: Central
Current Time: 1:59am
Short URL: allareacodes.com/331

Area Code 331 Map

Where is area code 331?

Area code 331 is located in Illinois and covers Aurora, Naperville, Bolingbrook, and Wheaton. It is an overlay for area code 630 and serves the same area.

What time zone is area code 331?

The 331 area code is located in the Central timezone. The Central time zone is also known as America/Chicago. As of the last time this page was loaded, the current time is 1:59am.

History

Area code 331 was first put in service October 7, 2007. It was created from area code 630.

Nearby Area Codes

224/847 (Elgin, IL)
309 (Peoria, IL)
331/630 (Aurora, IL)
708 (Cicero, IL)
773 (Chicago, IL)
779/815 (Rockford, IL)
872 (Chicago, IL)

Top 4 Counties in Area Code 331

CountyTotal Population% of Area Code% of County
DuPage, IL916,92436%100%
Kane, IL515,26933%59%
Kendall, IL114,73620%58%
Will, IL677,5606%6%

Top 50 Cities in Area Code 331

CityTotal Population% of Area Code% of City
Aurora, IL197,8995%100%
Naperville, IL141,8534%100%
Bolingbrook, IL73,3662%91%
Wheaton, IL52,8941%100%
Downers Grove, IL47,8332%100%
Elmhurst, IL44,1211%100%
Lombard, IL43,1651%100%
Carol Stream, IL39,7111%100%
Bartlett, IL41,2082%94%
Streamwood, IL39,8581%97%
Hanover Park, IL37,9731%100%
Addison, IL36,9421%100%
Glendale Heights, IL34,2081%100%
St. Charles, IL32,9742%100%
Woodridge, IL32,9711%100%
Oswego, IL30,3552%100%
Glen Ellyn, IL27,4501%100%
West Chicago, IL27,0862%100%
Batavia, IL26,0451%100%
Westmont, IL24,6851%100%
Roselle, IL22,7631%100%
Lisle, IL22,3901%100%
Darien, IL22,0861%100%
Bloomingdale, IL22,0181%100%
Villa Park, IL21,9041%100%
Geneva, IL21,4951%100%
Montgomery, IL18,4381%100%
Bensenville, IL18,3521%99%
North Aurora, IL16,7601%100%
Hinsdale, IL16,8160%98%
Yorkville, IL16,9212%96%
Lemont, IL16,0001%100%
Wood Dale, IL13,7701%100%
Warrenville, IL13,1401%100%
Plano, IL10,8561%100%
Burr Ridge, IL10,5591%99%
Campton Hills, IL11,1312%82%
Winfield, IL9,0800%100%
Sugar Grove, IL8,9971%100%
Itasca, IL8,6491%100%
Willowbrook, IL8,5400%100%
Clarendon Hills, IL8,4270%100%
Joliet, IL147,4330%6%
Boulder Hill, IL8,1080%100%
Plainfield, IL39,5811%20%
Oak Brook, IL7,8831%99%
Elburn, IL5,6020%100%
Romeoville, IL39,6800%9%
Wayne, IL2,4311%99%
Oakbrook Terrace, IL2,1340%100%

Largest Telephone Carriers

Landline

Prefixes Carrier
5%Peerless Network
3%Verizon Wireless
3%Local Access
3%Ameritech
3%Level 3
3%Mci Worldcom
1%Bandwidthcom Clec
11%Other

Wireless

Prefixes Carrier
20%Verizon Wireless
15%Sprint
11%T-mobile
8%Cricket
4%Cingular
3%Bandwidthcom Clec
1%Level 3
1%Other

331 Area Code Prefixes

Assigned

Usage


Prefix
Usage
Primary City
Carrier
Introduced
(331) 200-
Wireless
Bartlett
T-mobile Usa
Introduced 07/11/2011
(331) 201-
Wireless
Downers Grove
Cellco Partnership DBA Verizon Wireless
Introduced 01/06/2012
(331) 202-
Wireless
Elmhurst
Sprint Spectrum
Introduced 01/17/2012
(331) 203-
Wireless
Aurora
Sprint Spectrum
Introduced 10/12/2011
(331) 204-
Landline
Bartlett
Broadvox-clec
Introduced 07/29/2013
(331) 205-
Wireless
Aurora
T-mobile Usa
Introduced 10/21/2011
(331) 206-
Wireless
Aurora
Sprint Spectrum
Introduced 10/12/2011
(331) 207-
Landline
Yorkville
Level 3 Communications
Introduced 11/01/2011
(331) 208-
Wireless
Aurora
Sprint Spectrum
Introduced 11/08/2011
(331) 209-
Wireless
Elmhurst
Level 3 Communications
Introduced 01/17/2012
(331) 210-
Landline
Saint Charles
Peerless Network Of Illinois
Introduced 03/06/2012
(331) 212-
Landline
Aurora
Mci Worldcom Communications
Introduced 04/05/2012
(331) 213-
Wireless
Naperville
Cellco Partnership DBA Verizon Wireless
Introduced 09/06/2011
(331) 214-
Wireless
Downers Grove
Cellco Partnership DBA Verizon Wireless
Introduced 06/20/2012
(331) 215-
Wireless
Naperville
Cellco Partnership DBA Verizon Wireless
Introduced 09/28/2012
(331) 216-
Wireless
Oswego
New Cingular Wireless PCS
Introduced 10/31/2012
(331) 218-
Wireless
Wheaton
T-mobile Usa
Introduced 07/09/2013
(331) 220-
Wireless
Aurora
Sprint Spectrum
Introduced 07/12/2011
(331) 221-
Landline
Elmhurst
Ameritech Illinois
Introduced 01/21/2009
(331) 222-
Wireless
Saint Charles
Cricket Communications
Introduced 10/28/2008
(331) 223-
Wireless
Saint Charles
Cricket Communications
Introduced 10/28/2008
(331) 225-
Wireless
Elmhurst
Sprint Spectrum
Introduced 08/22/2011
(331) 228-
Wireless
Saint Charles
Ovation Communications Of Illinois
Introduced 09/21/2011
(331) 229-
Wireless
Naperville
Cellco Partnership DBA Verizon Wireless
Introduced 11/27/2012
(331) 234-
Wireless
Sugar Grove
Cellco Partnership DBA Verizon Wireless
Introduced 07/08/2013
(331) 240-
Landline
West Chicago
Peerless Network Of Illinois
Introduced 04/10/2013
(331) 245-
Wireless
Bartlett
T-mobile Usa
Introduced 04/18/2013
(331) 248-
Landline
Geneva
Comcast Phone Of Illinois DBA Comco
Introduced 07/06/2007
(331) 250-
Wireless
Aurora
T-mobile Usa
Introduced 04/10/2012
(331) 251-
Wireless
Downers Grove
Cellco Partnership DBA Verizon Wireless
Introduced 12/05/2012
(331) 254-
T-mobile Usa
Introduced 07/16/2014
(331) 256-
Wireless
Aurora
Cellco Partnership DBA Verizon Wireless
Introduced 09/13/2011
(331) 262-
Wireless
Aurora
Sprint Spectrum
Introduced 07/30/2008
(331) 281-
Landline
Naperville
Ameritech Illinois
Introduced 10/25/2012
(331) 301-
Landline
Aurora
Local Access LLC
Introduced 03/13/2013
(331) 302-
Wireless
Aurora
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/2013
(331) 303-
Landline
Elburn
Cibolo Creek Ventures DBA Routepoint Comm Il
Introduced 04/22/2013
(331) 305-
Wireless
Naperville
Cellco Partnership DBA Verizon Wireless
Introduced 08/15/2013
(331) 318-
Landline
Lemont
Local Access LLC
Introduced 08/01/2013
(331) 330-
Landline
Oswego
Cricket Communications
Introduced 08/19/2008
(331) 332-
Wireless
Naperville
Cricket Communications
Introduced 11/03/2008
(331) 333-
Wireless
Naperville
Cricket Communications
Introduced 11/03/2008
(331) 422-
Landline
Saint Charles
Level 3 Communications
Introduced 11/13/2008
(331) 425-
Wireless
Aurora
T-mobile Usa
Introduced 07/11/2007
(331) 431-
Wireless
Aurora
Bandwidth.com Clec
Introduced 05/26/2010
(331) 442-
Wireless
Saint Charles
Cellco Partnership DBA Verizon Wireless
Introduced 10/30/2008
(331) 444-
Landline
Naperville
Cellco Partnership DBA Verizon Wireless
Introduced 08/04/2010
(331) 452-
Wireless
Aurora
Cellco Partnership DBA Verizon Wireless
Introduced 09/20/2007
(331) 454-
Wireless
Aurora
Cricket Communications
Introduced 05/07/2009
(331) 456-
Landline
Roselle
First Communications LLC
Introduced 12/05/2007
(331) 457-
Wireless
Naperville
Cellco Partnership DBA Verizon Wireless
Introduced 11/14/2008
(331) 462-
Landline
Lombard
Xo Illinois
Introduced 08/23/2008
(331) 465-
Wireless
West Chicago
New Cingular Wireless PCS
Introduced 10/17/2007
(331) 472-
Wireless
Naperville
T-mobile Usa
Introduced 10/22/2008
(331) 481-
Wireless
Downers Grove
Cellco Partnership DBA Verizon Wireless
Introduced 10/29/2008
(331) 551-
Wireless
Lombard
Cricket Communications
Introduced 11/05/2008
(331) 575-
Wireless
Aurora
Sprint Spectrum
Introduced 09/18/2007
(331) 588-
Wireless
Saint Charles
New Cingular Wireless PCS
Introduced 02/15/2010
(331) 625-
Wireless
Downers Grove
Cellco Partnership DBA Verizon Wireless
Introduced 10/16/2009
(331) 642-
Wireless
Elmhurst
Bandwidth.com Clec
Introduced 06/19/2008
(331) 643-
Wireless
Aurora
Sprint Spectrum
Introduced 09/18/2007
(331) 645-
Wireless
Elmhurst
Sprint Spectrum
Introduced 11/05/2007
(331) 684-
Landline
Aurora
Sigecom
Introduced 07/12/2007
(331) 702-
Landline
Naperville
Mci Worldcom Communications
Introduced 10/23/2013
(331) 703-
Wireless
West Chicago
T-mobile Usa
Introduced 10/24/2013
(331) 725-
Landline
Oswego
New Cingular Wireless PCS
Introduced 05/19/2009
(331) 777-
Landline
Downers Grove
Cellco Partnership DBA Verizon Wireless
Introduced 09/22/2010
(331) 801-
Teleport Communications America
Introduced 05/15/2014
(331) 803-
Landline
Lemont
Peerless Network Of Illinois
Introduced 04/10/2013
(331) 825-
Digital Network Access Communications
Introduced 11/08/2007
(331) 826-
Wireless
Elmhurst
Sprint Spectrum
Introduced 11/18/2008
(331) 888-
Landline
Warrenville
Peerless Network Of Illinois
Introduced 09/24/2010
(331) 903-
Sbc Internet Services
Introduced 05/15/2014
(331) 999-
Landline
Oswego
Bandwidth.com Clec
Introduced 09/22/2010

Heavily Reported Numbers

Phone complaint data powered by CallerCenter.com


Source: Area code information compiled from the North American Numbering Plan Administration (NANPA), telecom providers, and the U.S. Census Bureau.