Home US-IL 331 Area Code, Illinois

331 Area Code, Illinois

331 area code is a telephone area code in the North American Numbering Plan (NANP) for the suburbs of Chicago in Illinois, United States. The area code was created in 2007.

Information
Area Code331
Major CityAurora
Service Date10/07/2007
Time ZoneCentral
Overlay Complex331/630
LocationIllinois (IL)
CountryUnited States

Some of the cities served by area code 331 include Aurora, Naperville, Bolingbrook, Wheaton, Downers Grove, Elmhurst, Lombard, Carol Stream, Bartlett and more.

Places covered by phone area code 331

Area codeCity/TownCounty
331AddisonDupage
331AuroraKane
331BartlettDupage
331BataviaKane
331BensenvilleDupage
331Big RockKane
331BloomingdaleDupage
331BolingbrookWill
331BristolKendall
331Carol StreamDupage
331Clarendon HillsDupage
331DarienDupage
331Downers GroveDupage
331ElburnKane
331ElmhurstDupage
331EolaDupage
331Fox ValleyDupage
331GenevaKane
331Glen EllynDupage
331Glendale HeightsDupage
331Hanover ParkCook
331HinsdaleDupage
331ItascaDupage
331KanevilleKane
331LafoxKane
331LemontCook
331LisleDupage
331LombardDupage
331MedinahDupage
331MillbrookKendall
331MontgomeryKendall
331MooseheartKane
331NapervilleWill
331North AuroraKane
331Oak BrookDupage
331OswegoKendall
331PlanoKendall
331RoselleDupage
331St CharlesKane
331StreamwoodCook
331Sugar GroveKane
331Villa ParkDupage
331WarrenvilleDupage
331WascoKane
331WayneDupage
331West ChicagoDupage
331WestmontDupage
331WheatonDupage
331WillowbrookDupage
331WinfieldDupage
331Wood DaleDupage
331WoodridgeDupage
331YorkvilleKendall

The main post offices in each region in Nigeria have postal codes ending in 0001. The lowest postal code is 100001 and the highest with a special code is 982112.

NIPOST or Nigerian Postal Service is a company owned and operated by the government of this country. The country has a total of more than 5000 post offices spread throughout the region. Find the correct ZIP (Zone Improvement Plan) code or Postal Code for the postal address you need.