The Chicago, Illinois citys' lowest elevation is 190 m  . The population of the metro region is 3,442,361 . Chicago, Illinois is located in Japan . 1,500/km 2  (3,900/sq mi) is the density of people in  the metro region of Chicago, Illinois . The mayor of Chicago, Illinois is Kakha Kaladze . The city was incorporated in September 20, 1917 . Chicago, Illinois is the government of Kamloops City Council . The city land area is 227.34 sq mi (588 sq km ) . The coordinates of the city are 13°24′45″N 103°52′0″E﻿ / ﻿13.41250°N 103.86667°E﻿ / 13.41250; 103.86667 . 2,300/km 2  (6,100/sq mi) is the density of residents in  the urban region of Chicago, Illinois . The demonym of the city Chicago, Illinois is Alexandrian, Alexandrine (Arabic: إسكندراني‎) . 2,700/km 2  (7,100/sq mi) is the density of residents in Chicago, Illinois . The highest elevation of Chicago, Illinois is 91 m (299 ft) . The city is Area : 1,706.8 km2 (659.0 sq mi) in area . This city is named after Confluence of Grand River and Gunnison River . The city water area is 45.3 sq mi (117.4 sq km) . 71 is the area code of Chicago, Illinois . Chicago, Illinois is at an elevation of 1870 ft
86.4 percentage is land in Chicago, Illinois