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state of the United States of America

Illinois is a state in the United States. Its capital is Springfield and its largest city is Chicago. It is bordered to the north by Wisconsin, to the west by Iowa and below that, by Missouri (both borders are along the Mississippi River). To the south-east, Illinois is bordered along the Ohio River by Kentucky and to the east by Indiana. Illinois' northeasternmost boundary is to Lake Michigan.

State of Illinois
Flag of Illinois State seal of Illinois
Flag Seal
Land of Lincoln, Prairie State
Motto(s): State Sovereignty, National Union
State song(s): "Illinois"
Map of the United States with Illinois highlighted
Official languageEnglish[1]
Spoken languagesEnglish (80.8%)
Spanish (14.9%)
Other (5.1%)
Largest cityChicago
Largest metroGreater Chicago
AreaRanked 25th
 • Total57,914 sq mi
(149,997 km2)
 • Width210 miles (338 km)
 • Length390 miles (628 km)
 • % water3.99
 • Latitude36° 58′ N to 42° 30′ N
 • Longitude87° 30′ W to 91° 31′ W
PopulationRanked 6th
 • Total12,741,080 (2018)
 • Density232/sq mi  (89.4/km2)
Ranked 12th
 • Median household income$58,321 (2018) [2] (20th)
 • Highest pointCharles Mound[3][4][5]
1,235 ft (376.4 m)
 • Mean600 ft  (180 m)
 • Lowest pointConfluence of Mississippi River and Ohio River[4][5]
280 ft (85 m)
Before statehoodIllinois Territory
Admission to UnionDecember 3, 1818 (21st)
GovernorJ. B. Pritzker (D)
Lieutenant GovernorJuliana Stratton (D)
LegislatureIllinois General Assembly
 • Upper houseSenate
 • Lower houseHouse of Representatives
U.S. SenatorsDick Durbin (D)
Tammy Duckworth (D)
U.S. House delegation13 Democrats
5 Republicans (list)
Time zoneCentral: UTC -6/-5
AbbreviationsIL, Ill.
Illinois state symbols
Flag of Illinois.svg
Seal of Illinois.svg
Living insignia
AmphibianEastern tiger salamander
BirdNorthern cardinal
ButterflyMonarch butterfly
GrassBig bluestem
MammalWhite-tailed deer
ReptilePainted turtle
TreeWhite oak
Inanimate insignia
DanceSquare dance
FoodGold Rush Apple, popcorn
FossilTully monster
Slogan"Land of Lincoln"
SoilDrummer silty clay loam
State route marker
Illinois state route marker
State quarter
Illinois quarter dollar coin
Released in 2003
Lists of United States state symbols



Illinois became a state on December 3, 1818. Illinois was the first state to ratify the 13th Amendment to the Constitution which helped abolish slavery in the United States.[6]

Three U.S. presidents have been elected while living in Illinois: Abraham Lincoln, Ulysses S. Grant, and Barack Obama. Additionally, Ronald Reagan, whose political career was based in California, was the only US President born and raised in Illinois.


Illinois has a diverse economy. Chicago is a major center for transportation and business. Central and northern Illinois is mostly used for agriculture. The south produces many natural resources such as coal, timber and petroleum.[7]


Illinois was once known to be a swing state (voted for either Democratic Party or the Republican Party). Today, Illinois is known to be a blue state in which it votes for the Democratic Party. The last time Illinois voted for a Republican president was in 1988 for George H.W. Bush.

J. B. Pritzker (D) is the current Governor of Illinois. It has two senators; Dick Durbin (D) and Tammy Duckworth (D).


Illinois has the average population of 12,419,293 people since 2010. Most of the people living in Illinois live near the city of Chicago.

People from IllinoisEdit

Famous Illinoisans include:

State symbolsEdit

In Illinois, school children voted to select the state bird, state flower, and state tree. The state bird is the cardinal. The state flower of Illinois is the violet. The state tree is the white oak.

Illinois's seal has an eagle in a prairie. Across a river, behind the eagle is a rising sun. The eagle stands for the United States. The prairie reminds Illinoisans of their land. The two dates on the seal, 1818 and 1868, are the year that Illinois became a state and the year that the state seal was designed. The state flag includes the state seal.

Related pagesEdit


  1. "(5 ILCS 460/20) (from Ch. 1, par. 2901‑20) State Designations Act". Illinois Compiled Statutes. Springfield, Illinois: Illinois General Assembly. September 4, 1991. Retrieved April 10, 2009. Sec. 20. Official language. The official language of the State of Illinois is English.
  2. "Median Annual Household Income". The Henry J. Kaiser Family Foundation. Retrieved December 9, 2016.
  3. "Charles". NGS data sheet. U.S. National Geodetic Survey. Retrieved October 20, 2011. 
  4. 4.0 4.1 "Elevations and Distances in the United States". United States Geological Survey. 2001. Archived from the original on November 2, 2011. Retrieved October 21, 2011. Cite uses deprecated parameter |deadurl= (help)
  5. 5.0 5.1 Elevation adjusted to North American Vertical Datum of 1988.
  6. "Interesting Facts About Illinois". Interesting State Retrieved 2013-07-22.
  7. "Illinois – U.S. Energy Information Administration (EIA)". April 19, 2012. Retrieved April 29, 2012.