Chicago serves as the largest city in the state of Illinois with nearly 2.7 million residents; it is the most populous city in the Midwestern United States. Chicago retains its status as a major hub for industry, telecommunications and infrastructure, with O'Hare International Airport being the second busiest airport in the world. Forbes Magazine ranked Chicago as the worlds 5th most economically powerful cities. Chicago has a handful of professional sports teams including the Chicago Bulls (NBA), Chicago Bears (NFL), Chicago Cubs and White Sox (MLB), and the Chicago Blackhawks and Wolves (NHL). Chicago has a stronghold of the Democratic Party and has been home to many influential politicians, including the current President of the United States, Barack Obama.
The city's notoriety expressed in popular culture is found in novels, plays, movies, songs, various types of journals (e.g., sports, entertainment, business, trade, and academic), and the news media. Chicago has numerous nicknames, which reflect the impressions and opinions about historical and contemporary Chicago. The best known include: "Chi-town," "Windy City," "Second City," and the "City of Big Shoulders." Chicago has also been called "the most American of big cities.”