The city land area is 48.42 sq mi (125.41 km 2 ) . The water area of the city is 1.420 sq mi (3.677 km 2 )  13.73% . The population of the urban region is 16,349,831 (2nd) . The density of  residents in  the urban region of Chicago, Illinois is 3,423/km 2  (8,870/sq mi) . 2,200/km 2  (5,700/sq mi) is the density of people in  the metro region of Chicago, Illinois . On 1842 the city was incorporated . The metro region has Population (2014): 7,360,703 population . The city Chicago, Illinois demonym is Medellinense  ,  Paisa . Chicago, Illinois is the government of Swedish Ice Hockey Association . Chicago, Illinois is at an elevation of 72 ft .  The city area code is +226 . 3,194.38/km 2  (8,273.4/sq mi) is the density of people in Chicago, Illinois . The city has the postal code 34000 to 34990 . Chicago, Illinois is located in Colombia . 385.8 sq mi (999.3 sq km ) is the area of the city namedChicago, Illinois . 15°25′S 28°17′E﻿ / ﻿15.417°S 28.283°E are the coordinates of the city. . Soham El Wardini (2018) (BSS/PS) is the mayor of Chicago, Illinois . The Chicago, Illinois city highest elevation is 5,364 m (17,598 ft)
Soham El Wardini (2018) (BSS/PS) is an important local leader of the city Chicago, Illinois