The postal code of the city is 34000 to 34990 . The water area of the city is 0.736 sq mi (1.905 sq km) 36.58% . The urban region has Population (2014): 5,160,512 population . The coordinates of the city are 25°00′40″N 121°26′45″E﻿ / ﻿25.01111°N 121.44583°E . The highest elevation of Chicago, Illinois is 33 m (108 ft) . Chicago, Illinois is named for Cartagena, Spain . The metro region is 3,913 sq mi (10,130 km 2 ) in area . The city was incorporated in December 23, 1814 (village) . The density of  people in  the urban region of Chicago, Illinois is 8,600/km 2  (22,000/sq mi) . Chicago, Illinois is located in Cameroon . Chicago, Illinois is at an elevation of 2382 ft . The density of  people in Chicago, Illinois is 3,351/km 2  (8,680/sq mi) . The land area of the city is 1,117.11 km 2  (431.32 sq mi) . Chicago, Illinois is the government of Swedish Ice Hockey Association .  The city area code is +82-53 . The city is Area : 126 km2 (49 sq mi) in area
More than 348 sq mi area of the city Chicago, Illinois is water