Chicago, Illinois is located in India . The Chicago, Illinois citys' lowest elevation is 2 m  .  The city area code is (0)2 . 2,900/km 2  (7,400/sq mi) is the density of residents in Chicago, Illinois . The city Chicago, Illinois province is Santiago Province . Chicago, Illinois is at an elevation of 7726 ft . This city is named after Cartagena, Spain . The city was incorporated in March 6, 1836 (city) . The highest elevation of Chicago, Illinois is 424 m (1,391 ft) . Chicago, Illinois is the government of National Park Service . The demonym of the city Chicago, Illinois is Guayaquilean . 1,770 sq mi (4,600 km 2 ) is the area of the urban region of Chicago, Illinois . The city water area is 1.63 sq mi (4.23 km 2 ) 1.1% . The metro region has 1,401,687 population . The mayor of Chicago, Illinois is Alejandro Char  ,  (Radical Change) . Area: 116 km2 (45 sq mi) is the area of the city namedChicago, Illinois . The postal code of the city is 34000 to 34990 . The city land area is 138.75 sq mi (359.36 km 2 ) . 14,100/km 2  (37,000/sq mi) is the density of people in  the urban region of Chicago, Illinois
Alejandro Char  ,  (Radical Change) govern the city Chicago, Illinois