Chicago
City
City of Chicago
Clockwise from top: Downtown Chicago, the Chicago Theatre, the 'L', Navy Pier, Millennium Park, the Field Museum, and Willis Tower
Flag Seal
Etymology: Miami-Illinois: shikaakwa ("wild onion" or "wild garlic") Potawatomi: Gaa-zhigaagwanzhikaag
Nickname(s): Windy City, Chi-Town, City of Broad Shoulders, Second City (for more, see full list)
Motto(s): Latin: Urbs in Horto (City in a Garden), I Will
Location of Chicago in Cook County and DuPage County, Illinois
Chicago Location in the United States
Coordinates: 41°50′13″N 87°41′05″W[1]
Country	United States
State	Illinois
Counties	Cook, DuPage
Settled	circa 1780
Incorporated (town)	August 12, 1833
Incorporated (city)	March 4, 1837
Founded by	Jean Baptiste Point du Sable
Named for	Miami-Illinois: shikaakwa (wild onion or wild garlic)
Government
• Type	Mayor–council
• Body	Chicago City Council
• Mayor	Rahm Emanuel (D)
• City Clerk	Anna Valencia (D)
• City Treasurer	Kurt Summers Jr. (D)
Area[2]
• City	234.14 sq mi (606.42 km2)
• Land	227.34 sq mi (588.81 km2)
• Water	6.80 sq mi (17.62 km2)  3.0%
• Urban	2,122.8 sq mi (5,498 km2)
• Metro	10,874 sq mi (28,160 km2)
Elevation[1] (mean)	594 ft (181 m)
Highest elevation – near Blue Island	672 ft (205 m)
Lowest elevation – at Lake Michigan	578 ft (176 m)
Population (2010)[4]
• City	2,695,598
• Estimate (2016)[5]	2,704,958
• Rank	3rd, U.S.
• Density	11,898.29/sq mi (4,593.95/km2)
• Metro	9,512,999 (3rd)[3]
• CSA	9,882,634 (US: 3rd)[3]
Demonym(s)	Chicagoan
Time zone	Central (UTC-6)
• Summer (DST)	Central (UTC-5)
ZIP Code Prefixes	606xx, 607xx, 608xx
Area codes	312/872 and 773/872
FIPS code	17-14000
GNIS feature ID	0428803
Website	www.cityofchicago.org