Theflag of Illinois

Theseal of Illinois

The followingoutline is provided as an overview of and topical guide to the U.S. state of Illinois:

Illinois –fifth most populous of the50 states of theUnited States of America. Illinois lies betweenLake Michigan and theMississippi River and theOhio River in theMidwestern United States.Chicago,Illinois, is thethird most populous city and thethird most populous metropolitan area of theUnited States. The United States created theIllinois Territory on March 1, 1809. Illinois joined theUnion as the21st state on December 3, 1818.

• Names
  • Common name:Illinois
    • Pronunciation:/ˌɪlɪˈnɔɪ/ ^ⓘIL-i-NOY
  • Official name:State of Illinois
  • Abbreviations and name codes
    • Postal symbol: IL
    • ISO 3166-2 code:US-IL
    • Internetsecond-level domain:.il.us
  • Nicknames
    • Land of Lincoln^[1] (currently used onlicense plates)
    • Prairie State^[1]
    • Corn State^[1]
    • Inland Empire State
    • Sucker State (possibly named fora type of fish)^[1]
    • Garden of the West^[1]
    • Baja Wisconsin^[1]
• Adjectival:Illinois
• Demonym:Illinoisan

Geography of Illinois

• Illinois is: aU.S. state, afederal state of the United States of America
• Location
  • Northern Hemisphere
  • Western Hemisphere
    • Americas
      • North America
        • Anglo America
        • Northern America
          • United States of America
            • Contiguous United States
              • Central United States
                • Corn Belt
                • East North Central States
              • Midwestern United States
          • Great Lakes Region
• Population of Illinois: 12,830,632 (2010 U.S. Census^[2])
• Area of Illinois: 57,918 square miles (150,010 km²), 25th of the 50 states.
• Atlas of Illinois

• Historic places in Illinois
  • Ghost towns in Illinois
  • National Historic Landmarks in Illinois
  • National Register of Historic Places listings in Illinois
    • Bridges on the National Register of Historic Places in Illinois
• National Natural Landmarks in Illinois
• National parks in Illinois
• State parks in Illinois

• Climate of Illinois
• Geology of Illinois
• Environment ecoregions of Illinois
• Protected areas in Illinois
  • Nature centers in Illinois
  • State forests of Illinois
• Superfund sites in Illinois
• Wildlife of Illinois
  • Fauna of Illinois
    • Birds of Illinois

• Lakes of Illinois
• Rivers of Illinois

Regions of Illinois

• Central Illinois
• Eastern Illinois
• Northern Illinois
  • Northwestern Illinois
• Southern Illinois
  • Southeastern Illinois
• Forgottonia (Western Illinois)

• The 102counties of the state of Illinois
  • Municipalities in Illinois
    • Cities in Illinois
      • State capital of Illinois:
      • City nicknames in Illinois
    • Towns in Illinois
    • Unincorporated communities in Illinois
  • Census-designated places in Illinois

Demographics of Illinois

Politics of Illinois

• Form of government:U.S. state government
• Illinois's congressional delegations
• Illinois State Capitol
• Elections in Illinois
  • Electoral reform in Illinois
• Political party strength in Illinois

Government of Illinois

• Governor of Illinois
  • Lieutenant Governor of Illinois
  • Illinois Secretary of State
  • Illinois Treasurer
• State departments
  • Illinois Department of Transportation

• Illinois General Assembly (bicameral)
  • Upper house:Illinois Senate
  • Lower house:Illinois House of Representatives

Courts of Illinois

• Supreme Court of Illinois

Law of Illinois

• Cannabis in Illinois
• Capital punishment in Illinois
  • Individuals executed in Illinois
• Illinois Constitution
• Crime in Illinois
• Gun laws in Illinois
• Law enforcement in Illinois
  • Law enforcement agencies in Illinois
    • Illinois State Police
• Same-sex marriage in Illinois

• Illinois Air National Guard
• Illinois Army National Guard
• List of United States military bases in Illinois

History of Illinois

• Prehistory of Illinois
  • Indigenous peoples
    • Mississippian culture
      • Cahokia
• French colony ofLouisiane, 1699–1763; Upper Louisiana was calledIllinois Country.
  • Treaty of Paris of 1763
• British (though predominantlyFrancophone)Province of Quebec, (1763–1783)-1791
• American Revolutionary War, April 19, 1775 – September 3, 1783
  • United States Declaration of Independence, July 4, 1776
  • Illinois campaign, July 1778 – February 1779
  • Treaty of Paris, September 3, 1783
  • Unorganized territory of theUnited States, 1783–1787
• Territory Northwest of the River Ohio, (1787–1800)-1803
• Territory of Indiana, (1800–1809)-1816
• Territory of Illinois, 1809–1818
  • Peoria War, 1813
• State of Illinois becomes21st State admitted to theUnited States of America on December 3, 1818
  • Black Hawk War, 1832
  • Abraham Lincoln becomes 16thPresident of the United States on March 4, 1861
  • American Civil War, April 12, 1861 – May 13, 1865
    • Illinois in the American Civil War
    • Assassination ofPresidentAbraham Lincoln inWashington, D.C., on April 14, 1865
      • PresidentLincoln dies inWashington, D.C., on April 15, 1865
  • Ulysses S. Grant becomes 18thPresident of the United States on March 4, 1869
  • Ronald Reagan becomes 40thPresident of the United States on January 20, 1981

• By city
  • History of Chicago
  • History of Nauvoo, Illinois
  • History of Peoria, Illinois

• List of Illinois state legislatures
• Museums in Illinois

Culture of Illinois

• Museums in Illinois
• Religion in Illinois
  • Episcopal Diocese of Chicago
• Scouting in Illinois
• List of Illinois state symbols
  • Flag of Illinois
  • Seal of Illinois

• Music of Illinois
• Theater in Illinois

Sports in Illinois

• Professional sports teams in Illinois

Economy of Illinois

• Communications in Illinois
  • Newspapers in Illinois
  • Radio stations in Illinois
  • Television stations in Illinois
• Energy in Illinois
  • Power stations in Illinois
  • Solar power in Illinois
  • Wind power in Illinois
• Health care in Illinois
  • Hospitals in Illinois
• Transportation in Illinois
  • Airports in Illinois
  • Railroads in Illinois
  • Roads in Illinois
    • Illinois Routes (State highways)
    • Interstate Highways in Illinois

Education in Illinois

• Schools in Illinois
  • School districts in Illinois
    • High schools in Illinois
  • Colleges and universities in Illinois
    • University of Illinois system
    • Illinois State University

• Topic overview:
  • Illinois
  • Index of Illinois-related articles
• All pages with titles beginning withIllinois
• All pages with titles containingIllinois

Wikimedia Atlas of Illinois

• Illinois-related lists
• Outlines of U.S. states
• Outlines

• Pages using the Phonos extension
• Articles with short description
• Short description is different from Wikidata
• Pages including recorded pronunciations
• Pages using Sister project links with default search