History
Colonial settlement and early government
During the 18th century, several European colonial settlements were established in the area that would become St. Louis County. French colonists moved from east of the Mississippi River after France ceded territory to Great Britain after losing the Seven Years' War. It also ceded much of its territory west of the River to Spain. St. Louis was founded by Pierre Laclède and Auguste Chouteau on February 14, 1764; they became major fur traders in the city.Cohn, 26. Founded in about 1767 was Carondelet, to the south. It was annexed by the city in 1871. Florissant, then known as St. Ferdinand, was established in 1785 about twelve miles northwest of St. Louis on a tributary of theAntebellum growth and early education
After the transfer of Louisiana to the United States, the authority to grant incorporation to municipalities was delegated to the Territory and later was a state power.Cohn, 58. The first to gain municipal status in St. Louis County was St. Louis, which incorporated on November 9, 1809, under the territorial legislature. It gained city status on December 9, 1822. Only a handful of other municipal incorporations took place prior to the separation of the county and city: St. Ferdinand was granted incorporation in 1829 (and reincorporated as Florissant in 1843), while Bridgeton, a settlement along the Missouri River near Florissant, gained incorporation in 1843. The towns ofGovernment changes and early courthouses
From 1813 to 1830, the county initiated several changes to its government. By an act of the territorial legislature, the Court of Quarter Sessions was succeeded by a panel of three judges of common pleas in 1813. Two years later, this panel was succeeded by a newly created county court in 1815, composed of justices of the peace elected from the county to three-month terms. The St. Louis County Circuit Court (established in 1815 as the judicial branch of the county) was given authority in 1816 over the executive and legislative affairs of the county, superseding the court of justices of the peace. In 1821, a hybrid County and Probate Court was established and given executive and legislative control, and in 1830, its probate functions ceased. This County Court operated as the government of St. Louis County until public scandals encouraged the state legislature to abolish it and replace it in 1859 with a Board of Commissioners. Sessions of the County Court and other county governing bodies were held in a variety of locations during this early period.Cohn, 36. The Court of Quarter Sessions held its first meeting in 1804 at a tavern in St. Louis, then regularly at a building at Third and Plum until 1817. The county seat moved that year to a newly built one-story log cabin on Third Street between Elm and Spruce, followed by a move to the brick Baptist Church at Third and Market in 1820. The County Court established a commission in 1822 to study a permanent courthouse (previous facilities were rented). In 1823, Auguste Chouteau and John Baptiste Charles Lucas donated two tracts of land that formed a vacant square bounded by Broadway, Fourth, Chestnut, and Market. Between the summer of 1826 and 1833, a low-roofed two-story brick structure was built fronting Fourth Street; this was the first permanent courthouse for St. Louis County. Within a few years, however, the building's size was inadequate for the county government's needs; the original building was left in place during construction on the new building, which began in 1839. This new courthouse, now known as the Old Courthouse, included a finished rotunda, dome, and west wing by 1843; the 1833 courthouse was demolished in 1851, and by 1856, the east wing of the new courthouse was complete.Separation of St. Louis and St. Louis County
During the antebellum period, some city leaders began to work to separate the city of St. Louis, the county's largest municipality, from the county. In 1843, a group of St. Louis city residents petitioned the state legislature to separate the two entities. The General Assembly passed a resolution calling for a referendum on the subject among county voters outside the city. This vote held on August 7, 1844, showed a majority of county voters opposed to separation. Despite the vote, controversy continued and tension mounted between the county government and the city government during the 1840s and 1850s.William N. Cassella, Jr. "City-County Separation: The Great Divorce of 1876." ''Missouri Historical Society Bulletin.'' (January 1959). Much of the dispute involved the double taxation of city residents and their proportionally lesser representation in county government.Cohn, 28. The reform of 1859, in which the County Court was abolished by the state government and replaced by a Board of Commissioners, was in large part a reaction to city outcry over mismanagement of tax money. More than a name change, the reform expanded the size of the county government council to seven members, with four seats reserved for city representation (but the city at that time had roughly ten times the population of the county, so was still underrepresented in county government). The reform temporarily ameliorated the tensions. In 1863, the General Assembly restored the name of the county government to its former name of County Court. Despite some reforms, controversy returned and grew during the 1860s. This was largely due to what city residents considered double taxation: by the county and the city for services effectively provided by the city alone. Several plans began to circulate during the late 1860s that would relieve this burden, including home rule status for St. Louis, further reorganization of the County Court to ensure greater representation, city-county government consolidation, and separation of the two entities. The General Assembly considered several plans during this period. In March 1871, it passed a further reorganization of the County Court; the new Court would have an presiding judge electedPostseparation political issues
The first meeting of the new County Court took place on January 22, 1877, at the home of James C. Sutton, in what is now Maplewood. The three judges appointed a new county clerk, sheriff, and treasurer.Cohn, 33. They also announced at that meeting that the new Court was functional (obviating the legal standing of the previous County Court, which continued to meet albeit without legal function until July 1877) and the transfer of all county buildings and property in the city of St. Louis to the city government. Thus the county's courthouse in St. Louis became city property. The Court also requested that the city of St. Louis continue to provide police protection to some areas of the county until the county could provide these services. On January 29, 1877, the Court considered a report that recommended Kirkwood as the new county seat, but did not decide the issue at that time.Cohn, 34. The Court continued to meet at the Sutton House in Maplewood until February 1877, when it convened at the Des Peres Grange Hall. It agreed then to rent space at the Mount Olive Hotel, in what is now University City, until deciding on a new location for the courthouse.Cohn, 35. The Court continued to meet at the Mount Olive Hotel from March 1877 to 1879. Throughout 1877, the Court debated the question of the county seat; rejecting several sites, including Kirkwood and Florissant. In September 1877 the Court accepted the donation of 100 acres of land on Hanley Road by a farmer named Ralph Clayton. In addition to the benefit of donated land, the site was chosen because it was on the route of the Hodiamont streetcar line, which connected from St. Louis to Florissant. An additional four acres were given by M. F. Hanley, and in May 1878, the cornerstone was laid for a new county courthouse.Cohn, 37. In October 1878 the courthouse donation and streets were platted in what would become the town of Clayton. The new courthouse and jail opened in December 1878, at a cost of $38,000. Two additions were made to the courthouse in 1912 and in 1926.Growth of education and municipalities
In the years from the Civil War to World War I, relatively few new towns incorporated in St. Louis County; the first to incorporate after the war, Fenton, was incorporated in 1874 in southwest St. Louis County.Cohn, 110-112. Webster Groves incorporated in 1896, prompted by residents' demands for a police department after the murder of Bertram Atwater, a commercial artist from Chicago.Hemphill, 10. Webster had earlier been settled in 1853 as a stop on the Missouri Pacific line.Hemphill, 8. Other incorporations before World War I included University City in 1906 near Washington University in St. Louis; Maplewood in 1908, also along the Missouri Pacific railroad line; Wellston in 1908 in the inner north county;Postwar
A new courthouse was built in Clayton in 1945 (it serves as the 21st-century County Police headquarters). The original 1878 courthouse was torn down in 1971 to be replaced by county government plaza and modern six-story courthouse. Several changes took place in St. Louis County education after World War II. The Florissant School District and the Ferguson School District merged in October 1951 to form the Ferguson-Florissant School District.Davison, 68. As part of a court-ordered desegregation plan, in 1975 the Ferguson-Florissant district annexed the Kinloch and the Berkeley school districts to combine the schools. In 1955, St. Louis County established the St. Louis County Police Department, with jurisdiction throughout the county. In 1977, St. Louis County was terrorized by three car bombings, which killed two people. The bomber was never caught. In 1988 the Board of Freeholders proposed consolidating the county's 89 municipalities into 37 cities, eliminating all unincorporated areas. The vote in June 1989 was challenged by numerous groups on grounds questioning the board's constitutional authority. On June 25, days after the scheduled vote would have occurred, the U.S. Supreme Court unanimously overturned the Missouri Supreme Court, arguing the board's land ownership requirement violated the U.S. Constitution'sGeography
According to theNatural boundaries
TheTopography
The foothills of the Ozark Mountains begin in southwestern St. Louis County, with most of the rest of the county being a fairly level plateau. This western part of the county is the least developed, due to rugged topography. Bluffs along the Mississippi in the south of the county rise about 200–300 feet above the river. A major floodplain area is the Chesterfield Valley, in the western part of the county, along the Missouri River. It was formerly called "Gumbo Flats" after its rich, dark soil; it was submerged by at least ten feet of water during the Great Flood of 1993. The Corps of Engineers constructed a higher levee, and the county has permitted construction in the floodplain. The Columbia Bottom is a floodplain in the northeast of the county at theGeology
The bedrock is mainlyFlora and fauna
Before European settlement, the area was prairie and open parklike forest, maintained by Native Americans via burning. Trees are mainly oak,Climate
St. Louis County has a mix of a humid subtropical climate and a humid continental climate, with neither large mountains nor large bodies of water to moderate its temperature. The area is affected by both cold Canadian Arctic air, and also hot, humid air from the Gulf of Mexico. The county has four distinct seasons. Spring is the wettest season and produces erratic severe weather ranging from tornadoes to winter storms. Summers are hot, and the humidity can cause the heat index to rise to temperatures above . Fall is mild, with lower humidity and can produce intermittent bouts of heavy rainfall with the first snow flurry, snow flurries usually forming in late November. Winters are cool to cold with periodic snow and temperatures often below freezing. Winter storm systems, such as Alberta clippers, can bring days of heavy freezing rain, ice pellets, and snowfall. The average annual temperature for the years 1971–2000, recorded at Lambert–St. Louis International Airport, is , and average precipitation is . The average high temperature in July is , and the average low temperature in January is , although these values are often exceeded. Temperatures of or below occur three days per year on average. The highest temperature ever recorded in St. Louis was , on July 14, 1954, while the lowest temperature on record is , on January 29, 1873. Winter is the driest season, averaging about 6 inches of total precipitation. Springtime (March through May), is typically the wettest season, with under 10.5 inches. Dry spells of one or two weeks' duration are common during the growing seasons. Thunderstorms can be expected on 40 to 50 days per year. A few of them will be severe with locally destructive winds and large hail, and occasionally accompanied by tornadoes. A period of unseasonably warm weather late in Autumn known as Indian summer is common—roses will still be in bloom as late as November or early December in some years.Other geography
The largest natural lake in the county is Creve Coeur Lake. It was originally an oxbow of the nearby Missouri River and is now the centerpiece of a popular county park. Manchester Road (Missouri Route 100, Route 100) follows an ancient path westward out of St. Louis, following the boundary between the Missouri River, Missouri and Meramec River, Meramec watersheds. It is one of only two routes to leave the county without crossing any rivers (the other being State Highway T). The Sinks is aDemographics
As of the third quarter of 2024, the median home value in St. Louis County was $288,970. As of the 2023 American Community Survey, there are 414,739 estimated households in St. Louis County with an average of 2.36 persons per household. The county has a median household income of $81,340. Approximately 9.7% of the county's population lives at or below the Poverty in the United States, poverty line. St. Louis County has an estimated 65.1% employment rate, with 46.9% of the population holding a bachelor's degree or higher and 66.9% holding a high school diploma. The top five reported ancestries (people were allowed to report up to two ancestries, thus the figures will generally add to more than 100%) were English (88.5%), Spanish (3.0%), Indo-European (4.1%), Asian and Pacific Islander (3.0%), and Other (1.4%). The median age in the county was 40.6 years. St. Louis County, Missouri – racial and ethnic composition2020 census
As of the 2020 census, there were 1,004,125 people, 411,076 households, and 261,646 families in the county. The population density was . There were 444,653 housing units at an average density of . The racial makeup of the county was 62.97% White (U.S. Census), White, 24.56% African American (U.S. Census), African American, 0.24% Native American (U.S. Census), Native American, 4.86% Asian (U.S. Census), Asian, 0.03% Race (U.S. Census), Pacific Islander, 1.61% from some other races and 5.73% from two or more races. Hispanic and Latino Americans, Hispanic or Latino people of any race were 3.70% of the population. There were 411,076 households, out of which 53.46% had children under the age of 18 living with them, 44.55% were married couples living together, 14.55% had a female householder with no husband present, and 36.35% were non-families. 30.78% of all households were made up of individuals, and 5.57% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 3.05. In the county, the age distribution of the population shows 21.88% under the age of 18, _% from 18 to 24, _% from 25 to 44, _% from 45 to 64, and _% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 90.00 males. For every 100 females age 18 and over, there were 85.70 males. The median income for a household in the county was $58,532, and the median income for a family was $72,680. Males had a median income of $45,714 versus $30,278 for females. The per capita income for the county was $27,595. About 5.00% of families and 6.90% of the population were below the Poverty threshold, poverty line, including 9.30% of those under age 18 and 5.30% of those age 65 or over.Economy
Top employers
According to the county's 2023 Annual Comprehensive Financial Report, the largest employers in the county are:Unemployment rate
The United States Department of Labor's Bureau of Labor Statistics unemployment rate (not seasonally adjusted).Arts and culture
Parks and recreation
St. Louis County owns and maintains more than 40 parks as part of its county park system, including playgrounds and nature preserves. It also operates several recreation centers, the National Museum of Transportation, and the Affton Community Center. In addition to parks owned by St. Louis County, the county is home to three List of Missouri state parks, Missouri state parks: Babler State Park, Babler, Castlewood State Park, Castlewood, and Route 66 State Park, and part of the Big Muddy National Fish and Wildlife Refuge and the Ulysses S. Grant National Historic Site. Several municipalities in the county also own and maintain their own park systems.Government
St. Louis County government is divided between Executive (government), executive power vested in the List of county executives of St. Louis County, Missouri, County Executive and Legislature, legislative power vested in the St. Louis County Council, County Council. The current county executive is Sam Page, who was appointed on April 29, 2019. The county executive's term is four years without term limits, and the position is elected by the population of the entire county. The council consists of seven members elected from separate districts within the county, with four-year terms beginning on January 1 following elections. In 1950, St. Louis County became the first Missouri county to adopt a home-rule charter under the Constitution of Missouri, Missouri Constitution, and the current charter was adopted by voters on November 6, 1979.Public safety
The St. Louis County Police Department operates under the authority of the St. Louis County Board of Police Commissioners and is the largest law enforcement agency in St. Louis County. Although it is directly responsible for law enforcement in unincorporated areas of the county, several municipalities contract with the county police for public safety services. Municipalities that maintain service agreements with the county police are Black Jack, Fenton, Ferguson Police Department (Missouri), Ferguson, Grantwood Village, Green Park, Hanley Hills, Jennings, Marlborough, Norwood Court, Pasadena Hills, Twin Oaks, Valley Park, Wilbur Park, and Wildwood. A total of 58 of the 90 municipalities in the county maintain their own police departments. Eighty-one of the local towns run their own courts. St. Louis County fire services are provided by 20 municipal fire departments and 23 fire protection districts. The fire protection districts exist as independent, taxing governments that are unrelated to the St. Louis County government, while the municipal fire departments are funded through municipal taxes and are administered by their respective cities.Politics
As of March 2016, there were 648,073 registered voters in St. Louis County, down from 708,283 registered voters in April 2013. At the federal level, the county is represented by Democratic Party (United States), Democrat Wesley Bell of the Missouri's 1st congressional district, 1st district, and Republican Party (United States), Republican Ann Wagner of the Missouri's 2nd congressional district, 2nd district. Since 1992, the county has favored Democratic candidates in the presidential elections. Democrats are generally strongest in the northern portion of the county, which has a high African Americans, Black population, while Republicans have historically dominated the western and southern parts of the county. In recent years however, Republicans have seen the western and southern portion of the county, made up of suburbs, become much more competitive. St. Louis County is a diverse, college-educated, suburban, and affluent county, with a large Black population, as well as a new influx of Asian Americans. These factors in recent years have pushed the county to become safer for Democrats. Historically, the Republican Party (United States), Republican voters in this area were more moderate voters, fiscally conservative yet socially liberal. St Louis County overall is a Democratic stronghold, having voted for the Democratic presidential nominee in each election since 1992 United States presidential election, 1992, and with increasing margins since 2000 United States presidential election, 2000. In 2004, 2012, 2016, and 2020, it was only one of four counties in the state to vote Democratic. In 2020 United States presidential election, 2020, Joe Biden won the county with over 60% of the vote, the best ever showing for a Democrat in the county. As of the 2022 elections, of the five senators (who have residences in St. Louis County) elected to the Missouri Senate, four are Democrats and one is a Republican. Of the 27 representatives elected to the Missouri House of Representatives, 19 are Democrats and 8 are Republicans. All of North County elects Democrats to the Missouri General Assembly, most of Mid County also elect Democrats, while most of West County and South County elects Republicans.Education
Education in St. Louis County is provided by 23 public school districts, 20 private high schools, both a unified public library system and several municipal libraries, and several colleges and universities. Several of the school districts in the county also maintain a voluntary student transfer agreement with the St. Louis Public Schools that allows county residents to attend magnet schools in the city of St. Louis.Public schools
School districts include: Special School District of St. Louis County (SSD) operates schools for differently abled students. The Berkeley and Kinloch districts merged into Ferguson-Florissant in 1975. Wellston School District closed in 2010 and was consolidated into the Normandy district.Private schools
Higher education
Library
St. Louis County libraries include the unified St. Louis County Library and several municipal library systems.Infrastructure
Transportation
Major freeways and highways
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In 1927, a $1 million bond was issued allocating funds for the construction of the first St. Louis County Hospital. Construction of the 200-bed, the non-segregated hospital began in 1929 in the city of Clayton. The hospital opened in July 1931 and ran until June 1986.History of St. Louis County HospitalCommunities
One-third of the county population lives in unincorporated areas, for which the county government provides services such as zoning, code enforcement, refuse disposal, and police protection. In addition to the county-level government, there are 87 municipalities of St. Louis County, Missouri, municipal governments in St. Louis County that also provide services. These vary widely in population and area. The smallest towns in population are Champ, Missouri, Champ with a 2020 population of 10, Country Life Acres, Missouri, Country Life Acres (population 74), and Mackenzie, Missouri, Mackenzie (population 134); 14 county municipalities have a 2010 population under 500, and fewer than a third exceed 10,000. In area, the smallest town is Mackenzie () while 14 other towns are or less. At the other end of the scale, Florissant has a population over 50,000, and Wildwood, Missouri, Wildwood at the far west of the county is . St. Louis County municipalities include:Cities
* Ballwin *Bella Villa, Missouri, Bella Villa *Bellefontaine Neighbors, Missouri, Bellefontaine Neighbors *Berkeley, Missouri, Berkeley *Beverly Hills, Missouri, Beverly Hills *Black Jack, Missouri, Black Jack *Breckenridge Hills, Missouri, Breckenridge Hills *Brentwood, Missouri, Brentwood * Bridgeton *Calverton Park, Missouri, Calverton Park *Charlack, Missouri, Charlack * Chesterfield *Clarkson Valley, Missouri, Clarkson Valley * Clayton (county seat) *Cool Valley, Missouri, Cool Valley *Country Club Hills, Missouri, Country Club Hills *Crestwood, Missouri, Crestwood * Creve Coeur *Crystal Lake Park, Missouri, Crystal Lake Park *Dellwood, Missouri, Dellwood *Des Peres, Missouri, Des Peres *Edmundson, Missouri, Edmundson *Ellisville, Missouri, Ellisville * Eureka (Partly in Jefferson County) * Fenton *Ferguson, Missouri, Ferguson *Flordell Hills, Missouri, Flordell Hills * Florissant *Frontenac, Missouri, Frontenac *Glendale, Missouri, Glendale *Green Park, Missouri, Green Park *Greendale, Missouri, Greendale *Hazelwood, Missouri, Hazelwood *Huntleigh, Missouri, Huntleigh *Jennings, Missouri, Jennings *Kinloch, Missouri, Kinloch * Kirkwood *Ladue, Missouri, Ladue *Lakeshire, Missouri, Lakeshire *Manchester, Missouri, Manchester * Maplewood *Maryland Heights, Missouri, Maryland Heights *Moline Acres, Missouri, Moline Acres *Normandy, Missouri, Normandy *Northwoods, Missouri, Northwoods *Oakland, Missouri, Oakland *Olivette, Missouri, Olivette *Overland, Missouri, Overland *Villages
*Bellerive, Missouri, Bellerive Acres *Bel-Nor, Missouri, Bel-Nor *Bel-Ridge, Missouri, Bel-Ridge *Champ, Missouri, Champ *Country Life Acres, Missouri, Country Life Acres *Grantwood Village, Missouri, Grantwood Village *Hanley Hills, Missouri, Hanley Hills *Hillsdale, Missouri, Hillsdale *Marlborough, Missouri, Marlborough *Norwood Court, Missouri, Norwood Court *Pasadena Park, Missouri, Pasadena Park *Sycamore Hills, Missouri, Sycamore Hills *Uplands Park, Missouri, Uplands Park *Westwood, Missouri, Westwood *Wilbur Park, Missouri, Wilbur ParkCensus-designated places
* Affton *Castle Point, Missouri, Castle Point *Concord, Missouri, Concord *Glasgow Village, Missouri, Glasgow Village *Lemay, Missouri, Lemay *Mehlville, Missouri, Mehlville *Oakville, Missouri, Oakville *Old Jamestown, Missouri, Old Jamestown *St. George, Missouri , St. George *Sappington, Missouri, Sappington *Spanish Lake, Missouri, Spanish LakeTownships
* Airport Township, St. Louis County, Missouri, Airport * Bonhomme Township, St. Louis County, Missouri, Bonhomme * Chesterfield Township, St. Louis County, Missouri, Chesterfield * Clayton Township, St. Louis County, Missouri, Clayton * Concord Township, St. Louis County, Missouri, Concord * Creve Coeur Township, St. Louis County, Missouri, Creve Coeur * Ferguson Township, St. Louis County, Missouri, Ferguson * Florissant Township, St. Louis County, Missouri, Florissant * Gravois Township, St. Louis County, Missouri, Gravois * Hadley Township, St. Louis County, Missouri, Hadley * Jefferson Township, St. Louis County, Missouri, Jefferson * Lafayette Township, St. Louis County, Missouri, Lafayette * Lemay Township, St. Louis County, Missouri, Lemay * Lewis and Clark Township, St. Louis County, Missouri, Lewis and Clark * Maryland Heights Township, St. Louis County, Missouri, Maryland Heights * Meramec Township, St. Louis County, Missouri, Meramec * Midland Township, St. Louis County, Missouri, Midland * Missouri River Township, St. Louis County, Missouri, Missouri River * Normandy Township, St. Louis County, Missouri, Normandy * Northwest Township, St. Louis County, Missouri, Northwest * Norwood Township, St. Louis County, Missouri, Norwood * Oakville Township, St. Louis County, Missouri, Oakville * Queeny Township, St. Louis County, Missouri, Queeny * Spanish Lake Township, St. Louis County, Missouri, Spanish Lake * St. Ferdinand Township, St. Louis County, Missouri, St. Ferdinand *Tesson Ferry Township, St. Louis County, Missouri, Tesson Ferry *University Township, St. Louis County, Missouri, University * Wildhorse Township, St. Louis County, Missouri, WildhorseUnincorporated communities
* Ascalon, Missouri, Ascalon * Carsonville, Missouri, Carsonville * Earth City, Missouri, Earth City * Fort Belle Fontaine * Glencoe, Missouri, Glencoe * Grover, Missouri, Grover * MacKenzie, Missouri, Mackenzie * Peerless Park, Missouri, Peerless Park * Pond, Missouri, Pond * Sherman, Missouri, Sherman * Times Beach, Missouri, Times BeachSee also
* List of counties in Missouri * National Register of Historic Places listings in St. Louis County, MissouriReferences
External links