The city Chicago, Illinois demonym is Guayaquilean . 1,401,687 is the population of the metro region of Chicago, Illinois . Chicago, Illinois is located in India . On March 6, 1836 (city) the city was incorporated . The highest elevation of Chicago, Illinois is 424 m (1,391 ft) . This city is named after Cartagena, Spain . The mayor of Chicago, Illinois is Alejandro Char  ,  (Radical Change) . The city province is Santiago Province . The city water area is 1.63 sq mi (4.23 km 2 ) 1.1% . The land area of the city is 138.75 sq mi (359.36 km 2 ) . The lowest elevation of Chicago, Illinois is 2 m  . The postal code of the city is 34000 to 34990 . Chicago, Illinois is the government of National Park Service . Chicago, Illinois is at an elevation of 2355 m . The density of  people in Chicago, Illinois is 2,900/km 2  (7,400/sq mi) . The density of  residents in  the urban region of Chicago, Illinois is 14,100/km 2  (37,000/sq mi) . The city is Area: 116 km2 (45 sq mi) in area .  The city area code is (0)2 . The urban region is 1,770 sq mi (4,600 km 2 ) in area
The city Chicago, Illinois is 37225sq mi populace in it's urban region