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Illinois
( Flag of Illinois) ( Seal of Illinois)
State nickname: The Prairie State
Other U.S. States
Capital

Springfield

Largest City

Chicago

Governor

Rod Blagojevich

Official languages

English

Area

  - Total
  - Land
  - Water
  - % water

Ranked 25th

149,998 km˛
143,968 km˛
6,030 km˛
4.0 %

Population

  - 2000 Census

Ranked 5th

12,419,293

Population density

  - 2000 Census

Ranked 11th

86.27 /km˛

Admittance into Union

  - Order
  - Date


21st
December 3, 1818

Time zone Central: UTC-6/ -5
Latitude36°58'N to 42°30'N
Longitude87°30'W to 91°30'W
Width

Length
Elevation
  - Highest
  - Mean
  - Lowest

340 km

630 km
 
376 meters
182 meters
85 meters

ISO 3166-2US-IL

.
Illinois is a state in the United States named after the Illiniwek Indian tribe, which used to live there. The capital of Illinois is Springfield and the U.S. postal abbreviation for the state is IL.

Illinois is pronounced ill-len-NOY, or jokingly, ill-len-NWAH.

The USS Illinois was named in honor of this state.



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