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Area Code 312

What is the 312 area code?

State Illinois
Time Zone Central Time

The 312 area code is located in the state of Illinois, and according to Intelius data, covers roughly 1,189,561 phone numbers. Chicago is the largest city within this area code with a population of about 5,180,493.

Have you received a call from a number with a 312 area code? Figure out who is calling you by performing a reverse phone lookup search. Intelius can provide you with a phone report that includes (when available) original line type and carrier, the number owner’s name, last known address and past addresses, age, possible relatives, and more.

Source: WorldAtlas.com

Top cities in the (312) area code

  1. Chicago
    County Cook
    Population 5,180,493
Source: WorldAtlas.com

312 Stats

Number of Prefixes
783
Number of Cellphones
784,593
Number of Land Lines
404,968
Source: WorldAtlas.com

Area Code (312) Prefixes

Prefix
COUNTY
City
CARRIER
TYPE
County Cook
City Chicago
Carrier MetroPCS
Type Wireless, PCS, Cellular
County Cook
City Chicago Franklin
Carrier AT&T Illinois
Type Landline
County Cook
City Riverdale
Carrier Verizon Wireless
Type Wireless, PCS, Cellular
County Cook
City Burr Ridge
Carrier AT&T Mobility
Type Wireless, PCS, Cellular
County Cook
City Riverdale
Carrier Verizon Wireless
Type Landline
County Cook
City Bensenville
Carrier Verizon Business
Type Landline
County Cook
City Burr Ridge
Carrier AT&T Mobility
Type Wireless, PCS, Cellular
County Cook
City Chicago Canal
Carrier AT&T Mobility
Type Wireless, PCS, Cellular
County Cook
City Burr Ridge
Carrier AT&T Mobility
Type Wireless, PCS, Cellular
County Cook
City Riverdale
Carrier Verizon Wireless
Type Wireless, PCS, Cellular

Intelius is a leading provider of public data about people and their connections to others. Intelius does not provide consumer reports and is not a consumer reporting agency as defined by the Fair Credit Reporting Act (FCRA). This site should not be used to determine an individual’s eligibility for credit, insurance, employment, housing or any other purpose covered by the FCRA. Please visit GoodHire for all your employment screening needs.