The postal code of the city is 207, 208, 220 - 224, 226 - 228, 231 - 239, 241 - 244, 247 - 249, 251 - 253 . The Chicago, Illinois city highest elevation is 14,110 ft (4,300 m) . Chicago, Illinois is named for Cartagena, Spain .  The city area code is 0211 . The coordinates of the city are 36°45′14″N 3°3′32″E﻿ / ﻿36.75389°N 3.05889°E . Chicago, Illinois is located in Colombia . The land area of the city is 11,609.91 km 2  (4,482.61 sq mi) . Chicago, Illinois has Population: 639,598 (2014-urban, others 2013) population . 1,600/km 2  (4,200/sq mi) (2011) is the density of residents in Chicago, Illinois . The Chicago, Illinois citys' lowest elevation is 5,740 ft  . Chicago, Illinois is the government of Parks Canada . The population of the urban region is Population (2014): 5,160,512 . Chicago, Illinois is at an elevation of 4190 ft . On 1842 the city was incorporated . The province of the city Chicago, Illinois is Luanda . The metro region has 1,973,470 (2016 Census) population . The demonym of the city Chicago, Illinois is Mashhadi, Mashadi, Mashdi (informal)
The peak of the city is at 378 m 