Outline of Illinois

Overview of and topical guide to Illinois

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

Illinois – fifth most populous of the 50 states of the United States of America. Illinois lies between Lake Michigan and the Mississippi River and the Ohio River in the Midwestern United States. Chicago, Illinois, is the third most populous city and the third most populous metropolitan area of the United States. The United States created the Illinois Territory on March 1, 1809. Illinois joined the Union as the 21st state on December 3, 1818.

General reference

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
  - Internet second-level domain: .il.us
- Nicknames
  - Land of Lincoln^[1] (currently used on license plates)
  - Prairie State^[1]
  - Corn State^[1]
  - Inland Empire State
  - Sucker State (possibly named for a type of fish)^[1]
  - Garden of the West^[1]
  - Baja Wisconsin^[1]
Adjectival: Illinois
Demonym: Illinoisan

Geography of Illinois

Illinois is: a U.S. state, a federal 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

Places in Illinois

Environment of Illinois

Natural geographic features of Illinois

Government and politics of Illinois

Politics of Illinois

Branches of the government of Illinois

Government of Illinois

Executive branch of the government of Illinois

Governor of Illinois
State departments
- Illinois Department of Transportation

Legislative branch of the government of Illinois

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

Judicial branch of the government of Illinois

Courts of Illinois

Supreme Court of Illinois

Law and order in 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

Military in Illinois

History of Illinois

History of Illinois, by period

Prehistory of Illinois
- Indigenous peoples
  - Mississippian culture
    - Cahokia
French colony of Louisiane, 1699–1763; Upper Louisiana was called Illinois Country.
- Treaty of Paris of 1763
British (though predominantly Francophone) 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 the United 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 becomes 21st State admitted to the United States of America on December 3, 1818
- Black Hawk War, 1832
- Abraham Lincoln becomes 16th President of the United States on March 4, 1861
- American Civil War, April 12, 1861 – May 13, 1865
  - Illinois in the American Civil War
  - Assassination of President Abraham Lincoln in Washington, D.C., on April 14, 1865
    - President Lincoln dies in Washington, D.C., on April 15, 1865
- Ulysses S. Grant becomes 18th President of the United States on March 4, 1869
- Ronald Reagan becomes 40th President of the United States on January 20, 1981

History of Illinois, by region

By city

History of Illinois, by subject

Museums in Illinois

Culture of Illinois

The Arts in Illinois

Sports in Illinois

Professional sports teams in Illinois

Economy and infrastructure of Illinois

Economy of Illinois

Communications in Illinois
Energy 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

References

^ ^a ^b ^c ^d ^e ^f Introduction to Illinois, 50 States, retrieved April 24, 2009.
^ "U.S. Census Bureau State & County QuickFacts Illinois". Archived from the original on 2009-04-01. Retrieved 2011-11-18.