Night Skyline of Chicago
Flag of Chicago
Seal of Chicago
Flag Seal
Nickname: "The Windy City"
Motto: "Urbs In Horto" (Latin: "City in a Garden"), "I Will"
Location
Location of Chicago
Location in Chicagoland and northern Illinois
Coordinates: 41°54′N 87°39′W
Government
Country
State
Counties
United States
Illinois
Cook, DuPage
Incorporated March 4, 1837
Mayor Richard M. Daley (D)
City Info
Zip Codes 60601 to 60681
Area Codes 312 and 773
Geographical characteristics
Area 606.2 kmē  (234.0 sq mi)
Land 588.3 kmē  (227.1 sq mi)
Water 17.9 kmē (6.9 sq mi)  3.0%
Urban 5,498.1 kmē (2,122.8 sq mi)
Metro 28,163 kmē (10,874 sq mi)
Elevation 179 m  (587 ft)
Demographics
Population (2005) 2,842,518
Density 4,867/kmē (12,604/sq mi)
Urban 8,711,000
Metro 9,443,356
Time zone
Summer (DST)
CST (UTC-6)
CDT (UTC-5)
Website: egov.cityofchicago.org