St. Louis stands on bluffs and terraces 100 to 200 feet above the Mississippi, just south of where the Missouri joins it. It is an independent city, separate from St. Louis County.
St. Louis counted 301,578 residents in the 2020 census, and the city stands at 466 feet above sea level. Bluffs and terraces rise 100 to 200 feet above the Mississippi, and the eastern city limit follows the river as the Missouri-Illinois border. The River des Peres runs along the southern boundary, though most of it was channeled or buried in the 1920s and early 1930s.
Founded in 1764, the city has 79 recognized neighborhoods. Lafayette Square's houses blend Greek Revival, Federal and Italianate styles, and Laclede's Landing keeps brick and cast-iron warehouses. July averages about 80 degrees and January about 32, with roughly 42 inches of precipitation a year and 16.6 inches of snow. Aging buildings and damp river air suit roaches, rodents and spiders.