Chicago is the third most populous city in the United States, located in northeastern Illinois on the shore of Lake Michigan. As of today, Chicago has approximately 2.7 million residents in the city and its metropolitan area is home to over 9.8 million people, making it the third largest metro area in the country. Chicago was incorporated as a city in 1837 and has since become a major global city and international hub for finance, commerce, industry, and transportation.