St. Louis metropolitan area
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Greater St. Louis Metropolitan Area St. Louis-St. Charles, Farmington, MO |
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|---|---|
| CSA | |
A NASA image of the Greater St. Louis area.
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| Motto: Gateway To The West | |
 Location in Missouri |
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| Country |
 United States
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| State(s) |
 Missouri Illinois
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| Largest city |
 St. Louis
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| Counties | |
| Area | |
| • Total | 21,910 km2 (8,458 sq mi) |
| • Land | 21,400 km2 (8,261 sq mi) |
| • Water | 510 km2 (197 sq mi) 2.3% |
| Elevation | 142–390 m (466–1,280 ft) |
| Population (2015) | |
| • Metro density | 131.4/km2 (340.3/sq mi) |
| • MSA | 2,811,588(20th) |
| • CSA | 2,916,447 (19th) |
| MSA/CSA = 2015, Urban = 2013 | |
| Time zone | CST (UTC−6) |
| • Summer (DST) | CST (UTC−5) |
| Area code(s) | 314, 636, 618, 573 |
Greater St. Louis is the metropolitan area that completely surrounds and includes the independent city of St. Louis (the principal city). It includes parts of both the U.S. states of Missouri and Illinois. The city core is on the border to Illinois and collectively the two regions form the combined metropolitan area. St. Louis is the largest metro area in Missouri, and is the second largest in Illinois. St. Louis County overlays the city of St. Louis and their two populations are generally tabulated independently of each other.
Depending on the counties included in the area, it can refer to the St. Louis, MO-IL metropolitan statistical area (MSA) or the St. Louis-St. Charles-Farmington, MO-IL combined statistical area (CSA). As well as the city St. Louis, the area serves the Southern Illinois counties of Bond, Calhoun, Clinton, Jersey, Macoupin, Madison, Monroe, and St. Clair (known collectively as the Metro East); the Missouri counties of Franklin, Jefferson, Lincoln, St. Charles, St. Louis County (separate from and not inclusive of the city of St. Louis), Warren, Washington, and a portion of Crawford County. The CSA includes all of the MSA listed above and the Farmington, MO micropolitan statistical area, which includes Washington and St. Francois Counties. The CSA was the 19th largest in the United States in 2015, with a population of 2,916,447, while the MSA was the 20th largest in the country that year with a population of 2,811,588.
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