The most populous cities in area code 872 are: Chicago.
Chicago, officially the City of Chicago, is the third-most populous city in the United States. With over 2.7 million residents, it is the most populous city in the state of Illinois, and the Midwestern United States. It is the county seat of Cook County. The Chicago metropolitan area, often referred to as Chicagoland, has nearly 10 million people and is the third-largest in the U.S. Chicago is called the architecture capital of the United States. In terms of wealth and economy, Chicago is considered one of the most important business centers in the world. Chicago was incorporated as a city in 1837, near a portage between the Great Lakes and the Mississippi River watershed, and grew rapidly in the mid-nineteenth century.
Cicero, a suburb of Chicago, is an incorporated town in Cook County, Illinois, United States. The population was 83,891 at the 2010 census. As of 2013, the town had a total population of 84,103, making it the tenth-largest municipality in Illinois. Cicero is named for the town of Cicero, New York, which in turn was named for Marcus Tullius Cicero, the Roman statesman and orator.
Elmwood Park is a village in Cook County, Illinois, United States. The population was 24,883 at the 2010 census. The community has long maintained a large Italian-American population, with a more recent influx of Polish-American and Hispanic residents.
The 872 area code lies within the Central Daylight Time Zone (or CDT). The current time in CDT is 0:04 AM on Jul 13, 2020.