New Area Code 872 Will Overlay 312 & 773 in November

The city of Chicago will have a new area code 872 which is the city’s third area code and will overlay the current area of area codes 312 and 773.

The Illinois Commerce Commission made the announcement Monday, August 10, 2009. The 872 area code is effective November 7, 2009.

Residents who already have 312 and 773 area codes can keep those numbers. The ICC reported that the numbers for the 773 area code were depleted in late July.

The 773 area code was introduced in 1995 and covers Chicago’s northern, western and southern neighborhoods. The 312 area code covers downtown and the Loop.

All Illinois area codes
217, 224, 309, 312, 331, 618, 630, 708, 773, 779, 815, 847, 872

Arlington Heights was originally part of area code 312, then 708 (started in 1989) and then 847 (starting January 20, 1996) before overlays in the area. Area code 224 was overlaid on 847 on January 5, 2002.

Related link …
Illinois Commerce Commission