Chicago, Illinois is the government of Parks Canada . The highest elevation of Chicago, Illinois is 2,715 m (8,907 ft) . The city has the postal code 8320000 . Chicago, Illinois is located in Zulia . Kakha Kaladze is the mayor of Chicago, Illinois . The city was incorporated in 1 October 1984 . (+593) 4 is the area code of Chicago, Illinois . The coordinates of the city are 36°18′N 59°36′E﻿ / ﻿36.300°N 59.600°E . The density of  inhabitents in  the urban region of Chicago, Illinois is 3,300/km 2  (8,600/sq mi) . The city water area is 129.3 km 2  (49.9 sq mi) . Chicago, Illinois has Population (2012): 3,937,451 population . The metro region is 4,558.4 sq km (1,760.0 sq mi) in area . The land area of the city is 8.921 sq mi (23.106 km 2 ) . The city province is Gauteng . Chicago, Illinois is at an elevation of 320 m . The urban region has 3,435,394 population . The demonym of the city Chicago, Illinois is Alexandrian, Alexandrine (Arabic: إسكندراني‎) . The Chicago, Illinois citys' lowest elevation is 246 ft . This city is named after Christ Church, Oxford
There are less than 5268 residents in Chicago, Illinois