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872 Area Code

Area code 872 serves Chicago in Illinois. It has been in service since November 7, 2009, when it was split from 312.

StateIllinois
Time zoneCentral
Local time now…
Prefixes in use279
Overlay with312, 872, 773
Projected to run out2046
ChicagoChicago
Cities and towns served by area code 872

Who issues 872 numbers

Mobile 38%VoIP and cable 41%Landline 21%

Share of the 279 prefixes (the three digits after 872) assigned to each type of carrier. Classification by carrier name, approximate.

CarrierPrefixes
T-Mobile67
Onvoy (Sinch)62
AT&T Mobility30
Bandwidth19
Ton80 Communications13
Fractel11
Verizon Wireless9
Commio8

Cities and towns in area code 872

CityPopulationOther area codes
Chicago2,731,585773, 312

Got a call from 872?

A 872 number was originally issued in Illinois, but that does not prove the caller is there. 41% of 872 prefixes belong to VoIP and cable providers, whose numbers can be bought online and used from anywhere. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.

All 279 prefixes in area code 872

Format: (872) XXX-YYYY. Carrier is the company the block was originally assigned to; numbers may since have been ported to another carrier.

Questions about area code 872

Where is area code 872?
Area code 872 is in Illinois. It covers Chicago.
What time zone is area code 872?
Area code 872 is in the Central time zone.
Is 872 a toll-free number?
No. 872 is a geographic area code in Illinois. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
Why does 872 share its area with 312 and 872, 773?
312, 872 and 872, 773 form an overlay: they cover the same territory, so new numbers there can get any of these codes, and local calls need all 10 digits.
Will area code 872 run out of numbers?
NANPA's latest forecast projects the 773/872 overlay to exhaust in the fourth quarter of 2046. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.

Other area codes in Illinois