The city Chicago, Illinois province is Gauteng . The city Chicago, Illinois demonym is Alexandrian, Alexandrine (Arabic: إسكندراني‎) . The land area of the city is 8.921 sq mi (23.106 km 2 ) . Chicago, Illinois is named for Christ Church, Oxford . Chicago, Illinois has Population (2012): 3,937,451 population . The city water area is 129.3 km 2  (49.9 sq mi) . The Chicago, Illinois city highest elevation is 2,715 m (8,907 ft) . 36°18′N 59°36′E﻿ / ﻿36.300°N 59.600°E are the coordinates of the city. . The urban region has 3,435,394 population .  The city area code is (+593) 4 . The area of the metro region is 4,558.4 sq km (1,760.0 sq mi) . Chicago, Illinois is the government of Parks Canada . The mayor of Chicago, Illinois is Kakha Kaladze . The postal code of the city is 8320000 . The Chicago, Illinois citys' lowest elevation is 246 ft . Chicago, Illinois is at an elevation of 320 m . The density of  inhabitents in  the urban region of Chicago, Illinois is 3,300/km 2  (8,600/sq mi) . The city was incorporated in 1 October 1984 . Chicago, Illinois is located in Zulia
Land covers8.921 sq mi area of the city