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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
312-201 Cook Chicago Ameritech Illinois Landline
312-202 Cook Chicago Ameritech Illinois Landline
312-203 Cook Chicago New Cingular Wireless Pcs, Llc - IL Wireless
312-204 Cook Chicago Ameritech Illinois Landline
312-205 Cook Chicago Allegiance Telecom, Inc. - IL Landline
312-206 Cook Chicago New Cingular Wireless Pcs, Llc - IL Wireless
312-207 Cook Chicago Ameritech Illinois Landline
312-208 Cook Chicago New Cingular Wireless Pcs, Llc - IL Wireless
312-209 Adams Northbrook Cellco Partnership Dba Verizon Wireless - IL Wireless
312-212 Cook Chicago Ameritech Illinois Landline
312-213 Cook Chicago New Cingular Wireless Pcs, Llc - IL Wireless
312-214 Cook Chicago Ameritech Illinois Landline
312-215 Cook Wheeling New Cingular Wireless Pcs, Llc - IL Wireless
312-216 Cook Chicago First Communications Llc - IL Landline
312-217 Cook Chicago Sprint Spectrum L.p. Wireless
312-218 Cook Chicago New Cingular Wireless Pcs, Llc - IL Wireless
312-219 Cook Chicago Bandwidth.com Clec, Llc - IL Wireless
312-220 Cook Chicago Ameritech Illinois Landline
312-221 Cook Chicago Sprint Spectrum L.p. Wireless
312-222 Cook Chicago Ameritech Illinois Landline
312-223 Cook Chicago Ameritech Illinois Landline
312-224 Cook Chicago Broadwing Communications, Llc - IL Landline
312-225 Cook Chicago Ameritech Illinois Landline
312-226 Cook Chicago Ameritech Illinois Landline
312-227 Cook Chicago Ameritech Illinois Landline
312-228 Cook Chicago Ameritech Illinois Landline
312-229 Cook Chicago Ameritech Illinois Landline
312-230 Cook Chicago Ameritech Illinois Landline
312-231 DuPage Roselle New Cingular Wireless Pcs, Llc - IL Wireless
312-232 Cook Chicago American Messaging Services, Llc Wireless
312-233 Cook Chicago Ameritech Illinois Landline
312-234 Cook Chicago Ameritech Illinois Landline
312-235 Cook Chicago Ameritech Illinois Landline
312-236 Cook Chicago Ameritech Illinois Landline
312-237 Cook Chicago Cellco Partnership Dba Verizon Wireless - IL Wireless
312-238 Cook Chicago Broadwing Communications, Llc - IL Landline
312-239 Cook Chicago At&t Local Landline
312-240 Cook Chicago Ameritech Illinois Landline
312-241 Cook Chicago New Cingular Wireless Pcs, Llc - IL Wireless
312-242 Cook Chicago Teleport Communications America, Llc - IL Landline
312-243 Cook Chicago Ameritech Illinois Landline
312-244 Cook Chicago Ameritech Illinois Landline
312-245 Cook Chicago Ameritech Illinois Landline
312-246 Cook Wheeling New Cingular Wireless Pcs, Llc - IL Wireless
312-247 Cook Chicago First Communications Llc - IL Landline
312-249 Cook Chicago Usa Mobility Wireless, Inc. Wireless
312-250 Cook Chicago Usa Mobility Wireless, Inc. Wireless
312-251 Cook Chicago Ameritech Illinois Landline
312-252 Cook Chicago Allegiance Telecom, Inc. - IL Landline
312-253 Cook Chicago Allegiance Telecom, Inc. - IL Landline
312-254 Cook Chicago Allegiance Telecom, Inc. - IL Landline
312-255 Cook Chicago Ameritech Illinois Landline
312-256 Cook Chicago Allegiance Telecom, Inc. - IL Landline
312-257 Cook Chicago Cellco Partnership Dba Verizon Wireless - IL Wireless
312-258 Cook Chicago Ameritech Illinois Landline
312-259 Cook Chicago New Cingular Wireless Pcs, Llc - IL Wireless
312-260 Cook Chicago Mcimetro Access Transmission Services Llc Landline
312-261 Cook Chicago Broadwing Communications, Llc - IL Landline
312-262 Cook Chicago Allegiance Telecom, Inc. - IL Landline
312-263 Cook Chicago Ameritech Illinois Landline
312-264 Cook Chicago Broadwing Communications, Llc - IL Landline
312-265 Cook Chicago Access One, Inc. - IL Landline
312-266 Cook Chicago Ameritech Illinois Landline
312-267 Cook Chicago Ameritech Illinois Landline
312-268 Cook Chicago Broadwing Communications, Llc - IL Landline
312-269 Cook Chicago Ameritech Illinois Landline
312-271 Cook Chicago Usa Mobility Wireless, Inc. Wireless
312-272 Cook Chicago Usa Mobility Wireless, Inc. Wireless
312-273 Cook Chicago Cellco Partnership Dba Verizon Wireless - IL Wireless
312-274 Cook Chicago Ameritech Illinois Landline
« 1 2 3 4 5 ...10 »

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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