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Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...
is a
state State most commonly refers to: * State (polity), a centralized political organization that regulates law and society within a territory **Sovereign state, a sovereign polity in international law, commonly referred to as a country **Nation state, a ...
located in the
Midwestern United States The Midwestern United States (also referred to as the Midwest, the Heartland or the American Midwest) is one of the four census regions defined by the United States Census Bureau. It occupies the northern central part of the United States. It ...
. According to the 2020 United States census, Illinois is the 6th most populous state with inhabitants but the 24th largest by land area spanning of land. Illinois is divided into 102
counties A county () is a geographic region of a country used for administrative or other purposesL. Brookes (ed.) '' Chambers Dictionary''. Edinburgh: Chambers Harrap Publishers Ltd, 2005. in some nations. The term is derived from the Old French denoti ...
and, as of 2020, contained 1,300
municipalities A municipality is usually a single administrative division having municipal corporation, corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality' ...
consisting of cities, towns, and villages. The most populous city is
Chicago Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of Unite ...
with 2,746,388 residents while the least populous is Valley City with 14 residents. The largest municipality by land area is Chicago, which spans , while the smallest is
Irwin Irwin may refer to: Places ;United States * Irwin, California * Irwin, Idaho * Irwin, Illinois * Irwin, Iowa * Irwin, Nebraska * Irwin, Ohio * Irwin, Pennsylvania * Irwin, South Carolina * Irwin County, Georgia * Irwin Township, Venango Co ...
at .


List

File:ChicagoFromCellularField.jpg, alt=Skyline of Chicago,
Chicago Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of Unite ...
is Illinois' most populous municipality. File:Paramount Theatre - panoramio.jpg, alt=Paramount Theatre, Aurora, Paramount Theatre in
Aurora An aurora ( aurorae or auroras), also commonly known as the northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in Earth's sky, predominantly observed in high-latitude regions (around the Arc ...
, Illinois' second most populous municipality. File:Joliet Union Station August 2014 01.jpg, alt=Joliet Union Station, Union Station in Joliet, Illinois' third most populous municipality. File:Downtown Naperville - panoramio.jpg, alt=Downtown Naperville, Downtown block in
Naperville Naperville ( ) is a city in DuPage and Will counties in the U.S. state of Illinois. It is a southwestern suburb of Chicago located west of the city on the DuPage River. As of the 2020 census, its population was 149,540, making it the state's ...
, Illinois' fourth most populous municipality. File:Rockford, IL Downtown 02.JPG, alt=Skyline of Rockford, Skyline of Rockford, Illinois' fifth most populous municipality, as seen from the Rock River. File:Downtown Elgin aerial view, 2018.jpg, alt=, Aerial view of downtown
Elgin Elgin may refer to: Places Canada * Elgin County, Ontario * Elgin Settlement, a 19th-century community for freed slaves located in present-day North Buxton and South Buxton, Ontario * Elgin, a village in Rideau Lakes, Ontario * Elgin, Manit ...
, Illinois' sixth most populous municipality. File:Downtown Springfield.JPG, alt=Illinois State Capitol, Springfield, Illinois State Capitol in Springfield, Illinois'
capital city A capital city, or just capital, is the municipality holding primary status in a country, state (polity), state, province, department (administrative division), department, or other administrative division, subnational division, usually as its ...
and seventh most populous municipality. File:Peoria Illinois Skyline.jpg, alt=Peoria Downtown Skyline, Skyline of Peoria, Illinois' eighth most populous municipality.


See also

*
List of census-designated places in Illinois This is a list of census-designated places in the U.S. state of Illinois, by county. Census-designated places (CDPs) are unincorporated communities lacking elected municipal officers and boundaries with legal status. The term "census designated ...
*
List of unincorporated communities in Illinois A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, but ...
*
Administrative divisions of Illinois The administrative divisions of Illinois are counties, townships, precincts, cities, towns, villages, and special-purpose districts. The basic subdivisions of Illinois are the 102 counties. Illinois has more units of local government than any oth ...
*
List of Illinois townships Of the 102 counties of the state of Illinois, 84 are organized into civil townships, usually referred to as simply "townships" in state law. All told, Illinois has 1,428 such townships, and they are the slight majority of the state's general un ...
*
List of counties in Illinois There are 102 counties in Illinois. The most populous of these is Cook County, the second-most populous county in the United States and the home of Chicago, while the least populous is Hardin County. The largest by land area is McLean Count ...
*
List of precincts in Illinois Of the 102 county (United States), counties in the U.S. state, state of Illinois, 17 are divided into minor civil divisions known as precincts. The 261 such precincts in Illinois are listed below. The remaining 85 counties are divided into 1,43 ...
* List of ghost towns in Illinois *
List of city nicknames in Illinois This list of city nicknames in Illinois compiles the pseudonym, aliases, sobriquets and slogans that Illinois city, cities are known by (or have been known by historically), officially and unofficially, to municipal governments, local people, o ...
* Illinois census statistical areas


Notes


References


External links

* * {{DEFAULTSORT:Municipalities In Illinois, List Of Illinois geography-related lists
Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...