Chicago is located in Illinois in the midwest of the United States, and Lake Michigan, one of the magnificent Great Lakes in North America, is in the east.

Chicago is the third most populous city in the United States, after new york and Los Angeles. Located in the center of the North American continent, it is the second largest commercial center and the largest futures market in the United States. The number of new enterprises in its metropolitan area has always ranked first in the United States and has been rated as the most balanced economy in the United States.

Chicago is customarily divided into three parts: north, west and south, with a length of 40.23km from north to south and a width of 24. 14km from east to west. According to the data of the US Bureau of Investigation, the total area of Chicago is 606. 1㎞? , of which 588.3㎞? Land, 17.8 "? For water. The water area accounts for about 2.94% of the total area.