The size of Chicago city is 234.14 sq mi (606 km2). s the most populous city in Illinois, as well as the third most populous city in the United States. With an estimated population of 2,705,994 (2018).

This city is 0.8 times the size of Singapore.

It is the most populous city in the Midwest. It is the principal city of the Chicago metropolitan area, often referred to as Chicagoland, and the county seat of Cook County, the second most populous county in the United States.

The metropolitan area, at nearly 10 million people, is the third-largest in the United States.

Economy of Chicago

The windy city has the third-largest gross metropolitan product in the United States—about $670.5 billion according to September 2017 estimates.

The city has also been rated as having the most balanced economy in the United States, due to its high level of diversification. In 2007, this city was named the fourth-most important business center in the world in the MasterCard Worldwide Centers of Commerce Index.

Additionally, the Chicago metropolitan area recorded the greatest number of new or expanded corporate facilities in the United States for calendar year 2014. The Chicago metropolitan area has the third-largest science and engineering work force of any metropolitan area in the nation.