Chicago, Illinois is at an elevation of 72 ft . Chicago, Illinois is located in Colombia . The urban region has 16,349,831 (2nd) population . On 1842 the city was incorporated . The area of the city is 385.8 sq mi (999.3 sq km ) . The highest elevation of Chicago, Illinois is 5,364 m (17,598 ft) . Chicago, Illinois is the government of Swedish Ice Hockey Association . The density of  residents in  the urban region of Chicago, Illinois is 3,423/km 2  (8,870/sq mi) . The city has the postal code 34000 to 34990 . The demonym of the city Chicago, Illinois is Medellinense  ,  Paisa . The density of  residents in  the metro region of Chicago, Illinois is 2,200/km 2  (5,700/sq mi) . +226 is the area code of Chicago, Illinois . Soham El Wardini (2018) (BSS/PS) is the mayor of Chicago, Illinois . The land area of the city is 48.42 sq mi (125.41 km 2 ) . 15°25′S 28°17′E﻿ / ﻿15.417°S 28.283°E are the coordinates of the city. . 3,194.38/km 2  (8,273.4/sq mi) is the density of people in Chicago, Illinois . Population (2014): 7,360,703 is the population of the metro region of Chicago, Illinois . The water area of the city is 1.420 sq mi (3.677 km 2 )  13.73%
There are more than 3120 residents per km 2 in Chicago, Illinois