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Area Code 312

Where does the 312 area code belong?

STATE
Illinois
TIME ZONE
Central Time
MAJOR CITY
Chicago

The 312 Area Code (or Area Code 312) is located in the state of MO. Area Code 312 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 1.63 million unique phone numbers and 5.08 million individuals near the city of Saint Louis

Area Code 312 History

Area code 312 was put into service. In 1989 Area code 312 was split to form area code 708. In 1996 area code 312 was split again to form area code 773. In 2009 area code 312 was overlaid with area code 872.

Following cities also use area code 312:

Chicago, Hinsdale, La Grange Park, Northbrook, Roselle, Wheeling.

ZIP codes in Area Code 312:

60001 (Alden)
60002 (Antioch)
60004 (Arlington Heights)
60005 (Arlington Heights)
60006 (Arlington Heights)
60007 (Elk Grove Village)
60008 (Rolling Meadows)
60009 (Elk Grove Village)
60010 (Barrington)
60011 (Barrington)

Big city in area code 312

Chicago

COUNTY
Cook
POPULATION
2,699,382
Source: WorldAtlas.com
NUMBER OF PREFIXES
783
NUMBER OF CELLPHONES
366,899
NUMBER OF LAND LINES
1,046,017
MEDIAN HOME VALUE
$157K
MEDIAN INCOME
$89.3K
Source: WorldAtlas.com

Browse Area Code (312) Prefixes

PREFIX COUNTY CITY CARRIER TYPE
312-659 Cook Chicago New Cingular Wireless Pcs, Llc - IL Wireless
312-660 Cook Chicago Teleport Communications America, Llc - IL Landline
312-661 Cook Chicago Ameritech Illinois Landline
312-662 Cook Chicago Ameritech Illinois Landline
312-663 Cook Chicago Ameritech Illinois Landline
312-664 Cook Chicago Ameritech Illinois Landline
312-665 Cook Chicago Teleport Communications America, Llc - IL Landline
312-666 Cook Chicago Ameritech Illinois Landline
312-667 Cook Chicago Peerless Network Of Illinois, Llc - IL Landline
312-669 Cook Chicago Ameritech Illinois Landline
312-670 Cook Chicago Ameritech Illinois Landline
312-671 Cook Chicago Sprint Spectrum L.p. Wireless
312-672 Cook Chicago Ameritech Illinois Landline
312-673 Cook Chicago First Communications Llc - IL Landline
312-674 Cook Chicago Ameritech Illinois Landline
312-675 Cook Chicago Ameritech Illinois Landline
312-676 Cook Chicago First Communications Llc - IL Landline
312-677 Cook Chicago Usa Mobility Wireless, Inc. Wireless
312-679 Cook Chicago American Messaging Services, Llc Wireless
312-680 Cook Chicago Usa Mobility Wireless, Inc. Wireless
312-681 Cook Chicago Ameritech Illinois Landline
312-682 Cook Chicago Usa Mobility Wireless, Inc. Wireless
312-683 Cook Chicago Ameritech Illinois Landline
312-685 Cook Chicago Sprint Spectrum L.p. Wireless
312-688 Cook Chicago Usa Mobility Wireless, Inc. Wireless
312-689 Cook Chicago American Messaging Services, Llc Wireless
312-691 Cook Chicago Indiana Paging Ntwk Wireless
312-692 Cook Chicago Ameritech Illinois Landline
312-693 Cook Chicago Ameritech Illinois Landline
312-694 Cook Chicago Ameritech Illinois Landline
312-695 Cook Chicago Ameritech Illinois Landline
312-696 Cook Chicago Ameritech Illinois Landline
312-697 Cook Chicago Ameritech Illinois Landline
312-698 Cook Chicago Broadwing Communications, Llc - IL Landline
312-699 DuPage Hinsdale New Cingular Wireless Pcs, Llc - IL Wireless
312-701 Cook Chicago Ameritech Illinois Landline
312-702 Cook Chicago Mcimetro Access Transmission Services Llc Landline
312-703 Cook Chicago Ameritech Illinois Wireless
312-704 Cook Chicago Ameritech Illinois Landline
312-705 Cook Chicago Teleport Communications America, Llc - IL Landline
312-706 Cook Chicago Teleport Communications America, Llc - IL Landline
312-707 Cook Chicago Ameritech Illinois Landline
312-709 Cook Chicago T-Mobile Usa, Inc. Wireless
312-710 Cook Chicago Ameritech Illinois Landline
312-712 Cook Chicago Ameritech Illinois Landline
312-713 Cook Chicago American Messaging Services, Llc Wireless
312-714 Cook Chicago Ameritech Illinois Landline
312-715 Cook Chicago Ameritech Illinois Landline
312-716 Cook Chicago Ameritech Illinois Wireless
312-717 Cook La Grange Park Usa Mobility Wireless, Inc. Wireless
312-718 Cook Chicago Cellco Partnership Dba Verizon Wireless - IL Wireless
312-719 Cook Chicago Sprint Spectrum L.p. Wireless
312-720 Cook Chicago Cellco Partnership Dba Verizon Wireless - IL Wireless
312-724 Cook Chicago Bandwidth.com Clec, Llc - IL Landline
312-725 Cook Chicago Bandwidth.com Clec, Llc - IL Landline
312-726 Cook Chicago Ameritech Illinois Landline
312-727 Cook Chicago Ameritech Illinois Landline
312-729 Cook Chicago Ameritech Illinois Landline
312-730 Cook Chicago At&t Local Landline
312-731 Cook Chicago T-Mobile Usa, Inc. Landline
312-732 Cook Chicago Ameritech Illinois Landline
312-733 Cook Chicago Ameritech Illinois Landline
312-735 Cook Chicago Sprint Spectrum L.p. Wireless
312-737 Cook Chicago Ameritech Illinois Landline
312-738 Cook Chicago Ameritech Illinois Landline
312-739 Cook Chicago Ameritech Illinois Landline
312-740 Cook Chicago American Messaging Services, Llc Wireless
312-742 Cook Chicago Ameritech Illinois Landline
312-743 Cook Chicago Ameritech Illinois Landline
312-744 Cook Chicago Ameritech Illinois Landline
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Phone Numbers Starting With (312) Area Code

Phone Number
312-535-6971		 USAGE
Landline		 City
Chicago		 Operate
Read more about who called from 3125356971		 Update Time
Mar-20-2024
Phone Number
312-325-0621		 USAGE
Landline		 City
Chicago		 Operate
Read more about who called from 3123250621		 Update Time
Mar-20-2024
Phone Number
312-332-7119		 USAGE
Landline		 City
Chicago		 Operate
Read more about who called from 3123327119		 Update Time
Mar-20-2024
Phone Number
312-225-5555		 USAGE
Landline		 City
Chicago		 Operate
Read more about who called from 3122255555		 Update Time
Mar-20-2024
Phone Number
312-500-4314		 USAGE
Landline		 City
Chicago		 Operate
Read more about who called from 3125004314		 Update Time
Mar-20-2024
Phone Number
312-380-4033		 USAGE
Landline		 City
Chicago		 Operate
Read more about who called from 3123804033		 Update Time
Mar-19-2024
Phone Number
312-818-5250		 USAGE
Landline		 City
Chicago		 Operate
Read more about who called from 3128185250		 Update Time
Dec-27-2023
Phone Number
312-632-6812		 USAGE
Landline		 City
Chicago		 Operate
Read more about who called from 3126326812		 Update Time
Dec-26-2023
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