The metro region has 3,442,361 population . The coordinates of the city are 13°24′45″N 103°52′0″E﻿ / ﻿13.41250°N 103.86667°E﻿ / 13.41250; 103.86667 . The demonym of the city Chicago, Illinois is Alexandrian, Alexandrine (Arabic: إسكندراني‎) . Chicago, Illinois is at an elevation of 1870 ft . The Chicago, Illinois citys' lowest elevation is 620 ft . This city is named after Confluence of Grand River and Gunnison River . The city land area is 227.34 sq mi (588 sq km ) . The city water area is 45.3 sq mi (117.4 sq km) . 1,500/km 2  (3,900/sq mi) is the density of people in  the metro region of Chicago, Illinois . Chicago, Illinois is the government of Kamloops City Council . Area : 1,706.8 km2 (659.0 sq mi) is the area of the city namedChicago, Illinois . Kakha Kaladze is the mayor of Chicago, Illinois . 2,700/km 2  (7,100/sq mi) is the density of residents in Chicago, Illinois . The Chicago, Illinois city highest elevation is 91 m (299 ft) . The density of  inhabitents in  the urban region of Chicago, Illinois is 2,300/km 2  (6,100/sq mi) .  The city area code is 71 . On September 20, 1917 the city was incorporated . Chicago, Illinois is located in Japan
Zhang Guoqing govern the city Chicago, Illinois