Chicago

Chicago Chicago, officially the City of Chicago, on Lake Michigan in Illinois, is one of the largest cities in the United States. At a 2017 estimate population of 2,716,450, it is the third most populous city in the United States, and the most populous city in both the state of Illinois and the United States Midwest. 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 United States and fourth largest in North America. It is the birthplace of the skyscraper and considered the most influential
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