St. Clair County is the ninth most populous county in

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 ...

. Located directly east of

St. Louis St. Louis ( , sometimes referred to as St. Louis City, Saint Louis or STL) is an independent city in the U.S. state of Missouri. It lies near the confluence of the Mississippi and the Missouri rivers. In 2020, the city proper had a populatio ...

, the county is part of the

Metro East The Metro East is an urban area in Southern Illinois, United States that contains the eastern and northern urban, suburban, and exurban areas on the Mississippi River in Greater St. Louis. It encompasses eight Illinois counties and constitutes ...

region of the

Greater St. Louis Greater St. Louis is the 23rd-largest metropolitan statistical area (MSA) in the United States, the largest in Missouri, and the second-largest in Illinois. Its core city—St. Louis, Missouri—sits in the geographic center of the metro area, ...

metropolitan area in

southern Illinois Southern Illinois is a region of the U.S. state of Illinois comprising the southern third of the state, principally south of Interstate 70. Part of downstate Illinois, it is bordered by the two List of U.S. rivers by discharge, most voluminous ri ...

. As of the 2020 United States census, St. Clair County had a population of 257,400, making it the third most populous county in Illinois outside the

Chicago metropolitan area The Chicago metropolitan area, also referred to as Chicagoland, is the largest metropolitan statistical area in the U.S. state of Illinois, and the Midwest, containing the City of Chicago along with its surrounding suburbs and satellite cities. ...

. Belleville is the

county seat A county seat is an administrative center, seat of government, or capital city of a county or parish (administrative division), civil parish. The term is in use in five countries: Canada, China, Hungary, Romania, and the United States. An equiva ...

and largest city. Along the Mississippi River, Cahokia Village was founded in 1697 by French settlers and served as a Jesuit mission to convert tribes of the

Illinois Confederation The Illinois Confederation, also referred to as the Illiniwek or Illini, were made up of a loosely organized group of 12 or 13 tribes who lived in the Mississippi River Valley. Eventually, member tribes occupied an area reaching from Lake Mich ...

to Christianity. The area became the center of the French

Illinois Country The Illinois Country ( ; ; ), also referred to as Upper Louisiana ( ; ), was a vast region of New France claimed in the 1600s that later fell under Spanish and British control before becoming what is now part of the Midwestern United States. Whi ...

. Prior to the establishment of Illinois as a state, the government of the

Northwest Territory The Northwest Territory, also known as the Old Northwest and formally known as the Territory Northwest of the River Ohio, was formed from part of the unorganized western territory of the United States after the American Revolution. Established ...

created St. Clair County in 1790. In 1809, the county became the administrative center of the

Illinois Territory The Territory of Illinois was an organized incorporated territory of the United States that existed from March 1, 1809, until December 3, 1818, when the southern portion of the territory was admitted to the Union as the State of Illinois. Its ...

and one of the two original counties of Illinois, alongside Randolph County. In 1970, the

United States Census Bureau The United States Census Bureau, officially the Bureau of the Census, is a principal agency of the Federal statistical system, U.S. federal statistical system, responsible for producing data about the American people and American economy, econ ...

placed the mean center of U.S. population, which generally has moved west every decennial census in St. Clair County.

History

This area was occupied for thousands of years by cultures of indigenous peoples. The first modern explorers and colonists of the area were French and French Canadians, founding a mission settlement in 1697 now known as Cahokia Village. After Great Britain defeated France in the Seven Years' War in 1763 and absorbed its territory in North America east of the Mississippi River, British-American colonists began to move into the area. Many French Catholics moved to settlements west of the river rather than live under British Protestant rule. After the United States achieved independence in the late 18th century, St. Clair County was the first county established in present-day Illinois; it antedates Illinois' existence as a separate jurisdiction. The county was established in 1790 by a proclamation of

Arthur St. Clair Major-General Arthur St. Clair ( – August 31, 1818) was a Scottish-born American military officer and politician. Born in Thurso, Caithness, he served in the British Army during the French and Indian War before settling in the Province of Pe ...

, first governor of the

, who named it after himself. The original boundary of St. Clair county covered a large area between the Mackinaw and

Ohio Ohio ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the ...

rivers. In 1801, Governor

William Henry Harrison William Henry Harrison (February 9, 1773April 4, 1841) was the ninth president of the United States, serving from March 4 to April 4, 1841, the shortest presidency in U.S. history. He was also the first U.S. president to die in office, causin ...

re-established St. Clair County as part of the

Indiana Territory The Indiana Territory, officially the Territory of Indiana, was created by an organic act that President of the United States, President John Adams signed into law on May 7, 1800, to form an Historic regions of the United States, organized incor ...

, extending its northern border to

Lake Superior Lake Superior is the largest freshwater lake in the world by surface areaThe Caspian Sea is the largest lake, but is saline, not freshwater. Lake Michigan–Huron has a larger combined surface area than Superior, but is normally considered tw ...

and the international border with

Rupert's Land Rupert's Land (), or Prince Rupert's Land (), was a territory in British North America which comprised the Hudson Bay drainage basin. The right to "sole trade and commerce" over Rupert's Land was granted to Hudson's Bay Company (HBC), based a ...

.White, Jesse. ''Origin and Evolution of Illinois Counties.'' State of Illinois, March 2010

/ref> When the

was created in 1809, Territorial Secretary

Nathaniel Pope Nathaniel Pope (January 5, 1784 – January 23, 1850) was an American government leader in the early history of the State of Illinois. He served as the Secretary of the Illinois Territory, then as a Non-voting members of the United States House of ...

, in his capacity as acting governor, issued a proclamation establishing St. Clair and Randolph County as the two original counties of Illinois. File:St. Clair County Illinois 1809.png, St. Clair County as it was re-established in 1809. This diagonal border line had been drawn by the Indiana Territorial government in 1803. File:St. Clair County Illinois 1812.png, St. Clair County between 1812 and 1813 File:St. Clair County Illinois 1813.png, St. Clair County between 1813 and 1816 File:St. Clair County Illinois 1816.png, St. Clair County between 1816 and 1818 File:St. Clair County Illinois 1818.png, St. Clair County between 1818 and 1825 File:St. Clair County Illinois 1825.png, St. Clair County between 1825 and 1827 File:St. Clair County Illinois 1827.png, St. Clair County from 1827 to present Originally developed for agriculture, this area became industrialized and urbanized in the area of

East St. Louis, Illinois East St. Louis, also known as ESTL, is a city in St. Clair County, Illinois, United States. It is directly across the Mississippi River from downtown St. Louis, Missouri, and the Gateway Arch National Park. East St. Louis is in the Metro East ...

, a city that developed on the east side of the Mississippi River from

St. Louis, Missouri St. Louis ( , sometimes referred to as St. Louis City, Saint Louis or STL) is an Independent city (United States), independent city in the U.S. state of Missouri. It lies near the confluence of the Mississippi River, Mississippi and the Miss ...

. It was always strongly influenced by actions of businessmen from St. Louis, who were initially French Creole fur traders with western trading networks. In the 19th century, industrialists from St. Louis put coal plants and other

heavy industry Heavy industry is an industry that involves one or more characteristics such as large and heavy products; large and heavy equipment and facilities (such as heavy equipment, large machine tools, huge buildings and large-scale infrastructure); o ...

on the east side of the river, developing East St. Louis. Coal from southern mines was transported on the river to East St. Louis, then fed by barge to St. Louis furnaces as needed. After bridges spanned the river, industry expanded. In the late 19th and early 20th centuries, the cities attracted immigrants from southern and eastern Europe and from the South. In 1910 there were 6,000 African Americans in the city. With the Great Migration underway from the rural South, to leave behind

Jim Crow The Jim Crow laws were state and local laws introduced in the Southern United States in the late 19th and early 20th centuries that enforced racial segregation, " Jim Crow" being a pejorative term for an African American. The last of the ...

and

disenfranchisement Disfranchisement, also disenfranchisement (which has become more common since 1982) or voter disqualification, is the restriction of suffrage (the right to vote) of a person or group of people, or a practice that has the effect of preventing someo ...

, by 1917, the African-American population in East St. Louis had doubled. Whites were generally hired first and given higher–paying jobs, but there were still opportunities for American blacks. If hired as strikebreakers, they were resented by white workers, and both groups competed for jobs and limited housing in East St. Louis. The city had not been able to keep up with the rapid growth of population. The United States was developing war industries to support its eventual entry into the Great War, now known as

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

. In February 1917 tensions in the city arose as white workers struck at the Aluminum Ore Company. Employers fiercely resisted union organizing, sometimes with violence. In this case they hired hundreds of blacks as strikebreakers. White workers complained to the city council about this practice in late May. Rumors circulated about an armed African American man robbing a white man, and whites began to attack blacks on the street. The governor ordered in the National Guard and peace seemed restored by early June. "On July 1, a white man in a Ford shot into black homes. Armed African-Americans gathered in the area and shot into another oncoming Ford, killing two men who turned out to be police officers investigating the shooting." Word spread and whites gathered at the Labor Temple; the next day they fanned out across the city, armed with guns, clubs, anything they could use against the blacks they encountered. From July 1 through July 3, 1917, the

East St. Louis riots The East St. Louis massacre was a series of violent attacks between African Americans and white Americans in East St. Louis, Illinois, between late May and early July of 1917. These attacks also displaced 6,000 African Americans and led to th ...

engulfed the city, with whites attacking blacks throughout the city, pulling them from streetcars, shooting and hanging them, burning their houses. During this period, some African Americans tried to swim or use boats to get to safety; thousands crossed the

Eads Bridge The Eads Bridge is a combined road and railway bridge over the Mississippi River connecting the cities of St. Louis, Missouri, and East St. Louis, Illinois. It is located on the St. Louis riverfront between Laclede's Landing, St. Louis, Lacled ...

to St. Louis, seeking refuge, until the police closed it off. The official death toll was 39 blacks and nine whites, but some historians believe more blacks were killed.Alison Keyes, "The East St. Louis Race Riot Left Dozens Dead, Devastating a Community on the Rise"
''Smithsonian Magazine'', June 30, 2017; accessed May 26, 2018 Because the riots were racial terrorism, the Equal Justice Initiative has included these deaths among the lynchings of African Americans in the state of Illinois in its 2017 3rd edition of its report, ''Lynching in America''. The riots had disrupted East St. Louis, which had seemed to be on the rise as a flourishing industrial city. In addition to the human toll, they cost approximately $400,000 in property damage (over $8 million, in 2017 US Dollars). They have been described as among the worst labor and race-related riots in United States history, and they devastated the African-American community. Rebuilding was difficult as workers were being drafted to fight in World War I. When the veterans returned, they struggled to find jobs and re-enter the economy, which had to shift down to peacetime. In the late 20th century, national restructuring of heavy industry cost many jobs, hollowing out the city, which had a marked decline in population. Residents who did not leave have suffered high rates of poverty and crime. In the early 21st century, East St. Louis is a site of

urban decay Urban decay (also known as urban rot, urban death or urban blight) is the sociological process by which a previously functioning city, or part of a city, falls into disrepair and decrepitude. There is no single process that leads to urban decay. ...

. Swathes of deteriorated housing were demolished and parts of the city have become

urban prairie Urban prairie (or urban grassland) is vacant urban land that has reverted to urban open space, green space. The definition can vary across countries and disciplines, but at its broadest encompasses meadows, lawns, and gardens, as well as public an ...

. In 2017 the city marked the centennial of the riots that had so affected its residents. Other cities in St. Clair County border agricultural or vacant lands. Unlike the suburbs on the Missouri side of the metro area, those in

Metro-East The Metro East is an urban area in Southern Illinois, United States that contains the eastern and northern urban, suburban, and exurban areas on the Mississippi River in Greater St. Louis. It encompasses eight Illinois counties and constitutes th ...

are typically separated by agriculture, or otherwise undeveloped land left after the decline of industry. The central portion of St. Clair county is located on a bluff along the Mississippi River. This area is being developed with suburban housing, particularly in Belleville, and its

satellite cities A satellite city or satellite town is a smaller municipality or settlement that is part of (or on the edge of) a larger metropolitan area and serves as a regional population and employment center. It differs from mere suburbs, subdivisions a ...

. The eastern and southern portion of the county is sparsely populated. The older small communities and small tracts of newer suburban villages are located between large areas of land devoted to

corn Maize (; ''Zea mays''), also known as corn in North American English, is a tall stout Poaceae, grass that produces cereal grain. It was domesticated by indigenous peoples of Mexico, indigenous peoples in southern Mexico about 9,000 years ago ...

and

soybean The soybean, soy bean, or soya bean (''Glycine max'') is a species of legume native to East Asia, widely grown for its edible bean. Soy is a staple crop, the world's most grown legume, and an important animal feed. Soy is a key source o ...

fields, the major commodity crops of the area. According to the St. Clair County Historical Society, the county flag was designed in 1979 by Kent Zimmerman, a senior at O'Fallon Township High School. Zimmerman's flag won first place in a contest against submissions by more than 40 grade school and high school students from throughout the county. The winning entry features the outline of St. Clair County with an orange moon, a stalk of corn, and a pickaxe against a background of three stripes alternating green, yellow, and green.

Geography

According to the US Census Bureau, the county has a total area of , of which is land and (2.4%) is water.

Climate and weather

In recent years, average temperatures in the county seat of Belleville have ranged from a low of in January to a high of in July, although a record low of was recorded in January 1977 and a record high of at

was recorded in July 1954. Average monthly precipitation ranged from in January to in May.

Transportation

Major highways

Interstate 55 Interstate 55 (I-55) is a major Interstate Highway in the central United States. As with most primary Interstates that end in a five, it is a major cross-country, north–south route, connecting the Gulf of Mexico to the Great Lakes. The ...

Interstate 64 Interstate 64 (I-64) is an east–west Interstate Highway in the Eastern United States. Its western terminus is at Interstate 70, I-70, U.S. Route 40 (US 40), and U.S. Route 61, US 61 in Wentzville, Missouri. Its eastern ter ...

Interstate 70 Interstate 70 (I-70) is a major east–west Interstate Highway in the United States that runs from Interstate 15, I-15 near Cove Fort, Utah, to Interstate 695 (Maryland), I-695 and Maryland Route 570 (MD 570) in Woodlawn, Baltimo ...

Interstate 255 Interstate 255 (I-255) is a bypass route of I-55 in Greater St. Louis. Along with I-270, it forms a loop around the central portion of the bi-state metro area; a majority of I-255 is located on the Illinois half. It shares its southern ...

* U.S. Highway 40 *

U.S. Highway 50 U.S. Route 50 or U.S. Highway 50 (US 50) is a major east–west route of the U.S. Highway system, stretching from Interstate 80 (I-80) in West Sacramento, California, to Maryland Route 528 (MD 528) in Ocean City, Maryland, on the Atlantic ...

Illinois Route 3 Illinois Route 3 (IL 3) is a major north–south arterial state highway in southwestern Illinois. It has its southern terminus at Cairo Junction (about north of Cairo, Illinois, Cairo) at the intersection of U.S. Route 51 in Illinois, U.S ...

Illinois Route 4 Illinois Route 4 is a major north–south highway that runs south from the Interstate 55 business loop around the state capital of Springfield, south to Illinois Route 13 just north of Murphysboro. This is a distance of . Route description I ...

Illinois Route 13 Illinois Route 13 (IL 13) is a major east–west state route in southern Illinois. Illinois 13 has its western terminus at Cahokia Heights at Illinois Route 157 and its eastern terminus at the Kentucky state line and the Ohio River, at Ken ...

Illinois Route 15 Illinois Route 15 (IL 15) is a east–west highway in southern Illinois with its western terminus at Illinois Route 3, U.S. Route 40, I-55, and I-64, and its eastern terminus at Wabash River at the Illinois/Indiana Border where it meets ...

Illinois Route 111 Illinois Route 111 (IL 111) is an north–south state highway in the southwestern part of the U.S. state of Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders o ...

* Illinois Route 156 *

Illinois Route 157 Illinois Route 157 (IL 157) is a north–south state highway in the southwestern part of the U.S. state of Illinois. The southern terminus of the highway is at an intersection with IL 3 in Cahokia. The northern terminus of the h ...

Illinois Route 158 Illinois Route 158 is an east–west state road in southwestern Illinois. Its western terminus is at Illinois Route 3 in Columbia and its eastern terminus is at U.S. Route 50, in O'Fallon. This is a distance of . Route description Illinois ...

Illinois Route 159 Illinois Route 159 is a north–south state route in southwestern Illinois. Its southern terminus is at Illinois Route 3 and Illinois Route 154 in Red Bud and its northern terminus at Illinois Route 16 in Royal Lakes. This is a distance of . ...

Illinois Route 161 Illinois Route 161 (abbreviated IL 161) is an east–west highway with its western terminus at St. Clair Avenue in Fairview Heights and its official eastern terminus at Illinois Route 37 near Kell. This is an official distance of . The r ...

* Illinois Route 163 *

Illinois Route 177 Illinois Route 177 is an east–west state route in southern Illinois. It runs from Illinois Route 13 in Belleville to U.S. Route 51 in Irvington. This is a distance of . Route description Illinois 177 overlaps Illinois Route 160 for a ...

* Illinois Route 203

Public transit

St. Clair County is home to 11 St. Louis MetroLink stations on the

Red Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–750 nanometres. It is a primary color in the RGB color model and a seconda ...

and

Blue Blue is one of the three primary colours in the RYB color model, RYB colour model (traditional colour theory), as well as in the RGB color model, RGB (additive) colour model. It lies between Violet (color), violet and cyan on the optical spe ...

Lines. * East Riverfront * 5th & Missouri *

Emerson Park Emerson Park is a suburban neighbourhood in the London Borough of Havering, east London. The neighbourhood developed as two large housing estates built on the estate of Nelmes manor in the parish of Hornchurch. Emerson Park estate to the south ...

* Jackie Joyner-Kersee Center * Washington Park * Fairview Heights * Memorial Hospital *

Swansea Swansea ( ; ) is a coastal City status in the United Kingdom, city and the List of urban areas in the United Kingdom, second-largest city of Wales. It forms a Principal areas of Wales, principal area, officially known as the City and County of ...

* Belleville *

College A college (Latin: ''collegium'') may be a tertiary educational institution (sometimes awarding degrees), part of a collegiate university, an institution offering vocational education, a further education institution, or a secondary sc ...

* Shiloh-Scott St. Clair County is also served by

Metrobus Metrobus may refer to: Transport services Bus Rapid Transit *MetroBus (Bristol), a bus rapid transit system in Bristol, England, United Kingdom *Metrobus (Buenos Aires), a bus rapid transit system in Buenos Aires, Argentina *Metrobus (Istanbul), a ...

and

Madison County Transit Madison County Transit (MCT) is a public transit operator that serves Madison County, Illinois, a suburban county northeast of St. Louis. Its services include bus, microtransit, paratransit, and a " rails to trails" network. In , the system had ...

Adjacent counties and city

* Madison County (north) *

Clinton County Clinton County may refer to: *Counties named for George Clinton, first and third Governor of New York, and later the fourth Vice President of the United States: **Clinton County, New York ** Clinton County, Ohio *Counties named for DeWitt Clinton, ...

(northeast) * Washington County (east) * Randolph County (south) * Monroe County (southwest) *

(west) *

St. Louis County, Missouri St. Louis County is located in eastern Missouri. It is bounded by the City of St. Louis and the Mississippi River to the east, the Missouri River to the north, and the Meramec River to the south. As of the 2020 census, the population was 1, ...

(west)

Demographics

In the 2020 United States census the racial makeup of the county was 59.6% White, 29.7% black or African American, 1.4% Asian, 0.3% American Indian, 0.1% Pacific islander, 2.1% from other races, and 6.8% from two or more races. 4.9% were of Hispanic or Latino origin. As of the 2010 United States census, there were 270,056 people, 105,045 households, and 70,689 families residing in the county. The population density was . There were 116,249 housing units at an average density of . The racial makeup of the county was 64.6% white, 30.5% black or African American, 1.2% Asian, 0.2% American Indian, 0.1% Pacific islander, 1.2% from other races, and 2.2% from two or more races. Those of Hispanic or Latino origin made up 3.3% of the population. In terms of ancestry, 27.5% were

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

, 11.1% were Irish, 7.4% were English, and 4.6% were

American American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, p ...

. Of the 105,045 households, 34.7% had children under the age of 18 living with them, 44.6% were married couples living together, 17.7% had a female householder with no husband present, 32.7% were non-families, and 27.5% of all households were made up of individuals. The average household size was 2.53 and the average family size was 3.09. The median age was 36.9 years. The median income for a household in the county was $48,562 and the median income for a family was $61,042. Males had a median income of $47,958 versus $34,774 for females. The per capita income for the county was $24,770. About 12.3% of families and 15.5% of the population were below the

poverty line The poverty threshold, poverty limit, poverty line, or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...

, including 24.7% of those under age 18 and 9.7% of those age 65 or over.

Government and infrastructure

The Southwestern Illinois Correctional Center, operated by the Illinois Department of Corrections, is near East St. Louis. Also located in St. Clair County is

Scott Air Force Base Scott Air Force Base is a United States Air Force base in St. Clair County, Illinois, near Belleville and O'Fallon, east-southeast of downtown St. Louis. Originally Scott Field, it was one of 32 Air Service training camps established af ...

, which is home to U.S. Transportation Command, the Air Force's Air Mobility Command, and the Military Surface Deployment and Distribution Command.

Politics

St. Clair County is a reliably Democratic county, having voted for the Democratic presidential candidate in every presidential election since 1928, with the exception of the

1972 United States presidential election Presidential elections were held in the United States on November 7, 1972. Incumbent Republican President Richard Nixon and Vice President Spiro Agnew defeated Democratic Senator George McGovern and former Ambassador Sargent Shriver in ...

Communities

Cities

* Belleville * Cahokia Heights * Collinsville * Columbia * East St. Louis * Fairview Heights *

Lebanon Lebanon, officially the Republic of Lebanon, is a country in the Levant region of West Asia. Situated at the crossroads of the Mediterranean Basin and the Arabian Peninsula, it is bordered by Syria to the north and east, Israel to the south ...

Madison Madison may refer to: People * Madison (name), a given name and a surname * James Madison (1751–1836), fourth president of the United States * Madison (footballer), Brazilian footballer Places in the United States Populated places * Madi ...

* Mascoutah * O'Fallon

Villages

Brooklyn Brooklyn is a Boroughs of New York City, borough of New York City located at the westernmost end of Long Island in the New York (state), State of New York. Formerly an independent city, the borough is coextensive with Kings County, one of twelv ...

* Caseyville * Dupo * East Carondelet * Fairmont City * Fayetteville * Freeburg * Hecker *

Lenzburg Lenzburg is a town in the central region of the Switzerland, Swiss canton of Aargau and is the capital of the Lenzburg District. The town, founded in the Middle Ages, lies in the Seetal, Seetal valley, about 3 kilometres south of the Aare river. L ...

* Marissa * Millstadt * New Athens * New Baden * Sauget * Shiloh * Smithton * St. Libory * Summerfield *

* Washington Park

Census-designated places

Darmstadt Darmstadt () is a city in the States of Germany, state of Hesse in Germany, located in the southern part of the Frankfurt Rhine Main Area, Rhine-Main-Area (Frankfurt Metropolitan Region). Darmstadt has around 160,000 inhabitants, making it the ...

* Floraville *

Paderborn Paderborn (; Westphalian language, Westphalian: ''Patterbuorn'', also ''Paterboärn'') is a city in eastern North Rhine-Westphalia, Germany, capital of the Paderborn (district), Paderborn district. The name of the city derives from the river Pade ...

* Rentchler *

Scott AFB Scott Air Force Base is a United States Air Force base in St. Clair County, Illinois, near Belleville and O'Fallon, east-southeast of downtown St. Louis. Originally Scott Field, it was one of 32 Air Service training camps established aft ...

Unincorporated communities

Douglas Douglas may refer to: People * Douglas (given name) * Douglas (surname) Animals * Douglas (parrot), macaw that starred as the parrot ''Rosalinda'' in Pippi Longstocking * Douglas the camel, a camel in the Confederate Army in the American Civil ...

* Imbs * North Dupo * Signal Hill * State Park Place * Westview

Townships

Canteen Canteen most often refers to: * Canteen (bottle), a water container * Cafeteria, a type of food service location within an institution in which there is little or no waiting staff table service * A complete set of cutlery comprising knives, forks, ...

* Caseyville *

Centreville Centreville is a census-designated place (CDP) in Fairfax County, Virginia, United States. It is a suburb of Washington, D.C., the nation's capital. It had a population of 73,518, making it the most-populous community in Fairfax County as of t ...

* East St. Louis * Engelmann * Fayetteville * Freeburg *

* Marissa * Mascoutah * Millstadt * New Athens * O'Fallon * Prairie du Long * St. Clair * Shiloh Valley * Smithton *

Stites Stites may refer to: People *Doctor Stites (fl. 1868), politician in Mississippi * Gary Stites (born 1940), singer * Matt Stites (born 1990), baseballer * Richard Stites (1931–2010), historian * Tyler Stites (born 1998), cyclist * Wendy Stites (b ...

* Stookey *

Sugarloaf A sugarloaf was the usual form in which refined sugar was produced and sold until the late 19th century, when granulated and cube sugars were introduced. A tall cone with a rounded top was the end product of a process in which dark molasses, ...

Former Township

* Belleville Former Communities * Alorton *

Cahokia Cahokia Mounds ( 11 MS 2) is the site of a Native American city (which existed 1050–1350 CE) directly across the Mississippi River from present-day St. Louis. The state archaeology park lies in south-western Illinois between East St. L ...

* National City

Islands

* Bloody Island

Education

References

External links

A Brief History of St. Clair County, Illinois
from

rootsweb.com Ancestry.com LLC is an American genealogy company based in Lehi, Utah. The largest for-profit genealogy company in the world, it operates a network of genealogical, historical records, and related genetic genealogy websites. It is owned by The ...

St. Clair County Historical Society & Research Library
{{DEFAULTSORT:Saint Clair County, Illinois 1790 establishments in the Northwest Territory Illinois counties Illinois counties on the Mississippi River Southern Illinois Metro East Populated places established in 1790