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| Saint Louis Metropolitan Statistical Area | |
|---|---|
| Name | Saint Louis metropolitan area |
| Other name | Greater Saint Louis |
| Settlement type | Metropolitan statistical area |
| Subdivision type | Country |
| Subdivision name | United States |
| Subdivision type1 | States |
| Subdivision name1 | Missouri, Illinois |
| Seat type | Principal city |
| Seat | Saint Louis |
| Area total km2 | 20,000 |
| Population total | 2,800,000 |
| Population as of | 2020 |
| Population density km2 | auto |
Saint Louis Metropolitan Statistical Area is a multi-county urban region centered on the independent city of Saint Louis spanning portions of Missouri and Illinois. The area anchors a constellation of municipalities including Clayton, Missouri, Belleville, Illinois, O'Fallon, Missouri, and Chesterfield, Missouri, and forms a significant hub for transportation, industry, and culture in the American Midwest. Its development ties to exploration, riverine commerce, and 19th- and 20th-century industrialization.
European presence began with expeditions by René-Robert Cavelier, Sieur de La Salle and settlement by fur traders linked to Pierre Laclède and Auguste Chouteau; the founding of Saint Louis in 1764 established a gateway for expansion along the Mississippi River and Missouri River. The area grew during the antebellum era through steamboat traffic, connections to the Louisiana Purchase, and waves of immigration from Germany, Ireland, and later Italy and Poland. Industrial expansion in the late 19th and early 20th centuries featured firms such as Anheuser-Busch, McDonnell Douglas, and Rolla National Ballistics Laboratory (later parts absorbed into federal programs), while architectural patronage by families like the Busch family and institutions like Washington University in St. Louis shaped civic identity. Twentieth-century events—World War I, World War II, and postwar suburbanization influenced by the Interstate Highway System—recast urban-suburban patterns, with white flight, racial tensions tied to the Great Migration, and later revitalization projects including the construction of the Gateway Arch and redevelopment of Laclede's Landing.
The region straddles the eastern edge of Missouri and southwestern Illinois, encompassing counties such as St. Louis County, Missouri, St. Louis (city), St. Charles County, Missouri, Jefferson County, Missouri, Franklin County, Missouri, Madison County, Illinois, St. Clair County, Illinois, and Bond County, Illinois. Topography includes floodplain environments along the Mississippi River and rolling terrain of the Ozark Plateau foothills; key waterways include the Meramec River, Missouri River, and numerous tributaries. Major neighborhoods and suburbs include University City, Missouri, Kirkwood, Missouri, Maplewood, Missouri, Granite City, Illinois, and Collinsville, Illinois, linked by corridors such as Interstate 55, Interstate 64, Interstate 70, and Interstate 255.
Census data reflect a population mosaic with sizable communities of African Americans concentrated in places like North St. Louis and East St. Louis, Illinois, long-standing European-heritage neighborhoods in Soulard and The Hill, St. Louis, and growing immigrant communities from Vietnam, Liberia, Mexico, and Bosnia and Herzegovina. The area hosts institutions serving diverse populations such as BJC HealthCare and Saint Louis University Hospital. Demographic trends show suburban growth in counties like St. Charles County, Missouri and population declines in portions of St. Louis (city), with implications for housing stock, zoning practices enacted by localities like Clayton, Missouri and tax base shifts affecting school districts including Kirkwood School District and Belleville School District 118.
The metropolitan economy historically relied on manufacturing exemplified by companies such as Riverview Foundry-era firms and aerospace employers like Boeing (formerly McDonnell Douglas), along with food and beverage giants including Anheuser-Busch. Contemporary economic drivers include healthcare systems like BJC HealthCare and SSM Health, research and education anchored by Washington University in St. Louis and Saint Louis University, financial services in nodes such as Clayton, Missouri, and logistics centered on the Port of Metropolitan St. Louis and air freight at Lambert–St. Louis International Airport. Redevelopment initiatives, venture capital activity tied to organizations like T-REX and Cortex Innovation Community, and tourism associated with landmarks such as the Gateway Arch National Park contribute to economic diversification.
The region is a crossroads for national corridors: Interstate 70, Interstate 44, Interstate 55, and Interstate 270 link the area to Chicago, Memphis, Kansas City, and Indianapolis. Air transport is dominated by Lambert–St. Louis International Airport, while river commerce uses the Port of Metropolitan St. Louis and barge traffic on the Mississippi River. Local transit includes the MetroLink (St. Louis), MetroBus (St. Louis), and commuter rail proposals that have involved agencies such as the East-West Gateway Council of Governments; freight movement relies on networks operated by Union Pacific Railroad, BNSF Railway, and Norfolk Southern Railway.
Higher education centers include Washington University in St. Louis, Saint Louis University, University of Missouri–St. Louis, and Missouri University of Science and Technology (extension programs). The area hosts specialized institutions like Maryville University and technical colleges such as St. Louis Community College with campuses in Meramec and Florissant Valley. Research parks and medical schools affiliated with Barnes-Jewish Hospital and Saint Louis University School of Medicine foster biomedical innovation, while primary and secondary education systems range from independent districts like Clayton School District to state-authorized charters and parochial schools operated by the Archdiocese of Saint Louis.
Cultural institutions include Saint Louis Art Museum, Missouri History Museum, Saint Louis Symphony Orchestra, and performing venues such as The Muny and Fox Theatre (St. Louis). Sports franchises and venues—historically St. Louis Cardinals (baseball) at Busch Stadium and past NFL presence with the St. Louis Rams—anchor civic pride. Culinary scenes spotlight St. Louis-style pizza, toasted ravioli, and breweries like Anheuser-Busch Brewery; festivals and events such as Saint Louis Mardi Gras and the Great Forest Park Balloon Race draw regional attendance. Parks and green spaces include Forest Park, Tower Grove Park, and attractions along the Mississippi Riverfront, with visitor destinations like City Museum and The Gateway Arch forming the metropolitan tourism core.