Chicago is the most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 census, it is the third-most populous city in the United States after New York City and Los Angeles. As the seat of Cook County, the second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area, often colloquially called "Chicagoland" and home to 9.6 million residents.
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AdExperience Chicago from a unique vantage point on our top-rated ChicagoArchitecture Tour. Discover Chicago's Architectural Wonders. Book 5-Star Rated ChicagoArchitecture Tour
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AdTake an architecture tour and learn the architectural history of Chicago. Full refund available up to 24 Hours before your tour date. Quick & easy purchase process.
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