The 872 area code belongs to the state of Illinois (IL) and it covers the city of Chicago and its greater area (O'Hare Airport, Harwood Heights, etc). This code was introduced on Nov 7, 2009 to overlay both 312 and 773 Illinois area codes covering downtown Chicago and its surroundings respectively.
|State||Larger cities in area code 872||Time Zone|
|Chicago (including downtown), Harwood Heights, Lincolnwood||CENTRAL
Current time is
|-- overlays area codes 312 and 773 since Nov. 2009 --|