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• Chicago is located in the state Illinois in the USA.


• Chicago has a population of 9,157,540 (metropolitan area)


• Chicago is known as the windy capital of the world.


• Chicago is located on the banks of Lake Michigan.


• Chicago's O'Hare International Airport is one of the busiest airports in the world.


• On St. Patrick's Day the Chicago River is always dyed green.


• Lincoln Park Zoo is one of the last free zoos in the world.


• Chicago is home of the Sears Tower - one of the tallest buildings in the world.