Geography of St. Louis
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St. Louis is located at . The city is built primarily on bluffs and terraces that rise above the western banks of the
Mississippi River The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it f ...
, just south of the
Missouri Missouri is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it is bordered by eight states (tied for the most with Tennessee ...
-Mississippi confluence. Much of the area is a fertile and gently rolling prairie that features low hills and broad, shallow valleys. Both the Mississippi River and the Missouri River have cut large valleys with wide flood plains.
Limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...
and
dolomite Dolomite may refer to: *Dolomite (mineral), a carbonate mineral *Dolomite (rock), also known as dolostone, a sedimentary carbonate rock *Dolomite, Alabama, United States, an unincorporated community *Dolomite, California, United States, an unincor ...
of the Mississippian
epoch In chronology and periodization, an epoch or reference epoch is an instant in time chosen as the origin of a particular calendar era. The "epoch" serves as a reference point from which time is measured. The moment of epoch is usually decided by ...
underlies the area and much of the city is a
karst Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant ro ...
area, with numerous sinkholes and caves, although most of the caves have been sealed shut; many springs are visible along the riverfront. Significant deposits of
coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dea ...
,
brick A brick is a type of block used to build walls, pavements and other elements in masonry construction. Properly, the term ''brick'' denotes a block composed of dried clay, but is now also used informally to denote other chemically cured cons ...
clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4). Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...
, and
millerite Millerite is a nickel sulfide mineral, Ni S. It is brassy in colour and has an acicular habit, often forming radiating masses and furry aggregates. It can be distinguished from pentlandite by crystal habit, its duller colour, and general l ...
ore were once mined in the city, and the predominant surface rock, the ''St. Louis Limestone'', is used as dimension stone and rubble for construction. The ''St. Louis
Geologic fault In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic ...
'' is exposed along the bluffs and was the source of several historic minor earthquakes; it is part of the ''St. Louis
Anticline In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is the ...
'' which has some
petroleum Petroleum, also known as crude oil, or simply oil, is a naturally occurring yellowish-black liquid mixture of mainly hydrocarbons, and is found in geological formations. The name ''petroleum'' covers both naturally occurring unprocessed crud ...
and
natural gas Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbo ...
deposits outside of the city. St. Louis is also just north of the
New Madrid Seismic Zone The New Madrid Seismic Zone (), sometimes called the New Madrid Fault Line, is a major seismic zone and a prolific source of intraplate earthquakes (earthquakes within a tectonic plate) in the Southern and Midwestern United States, stretching t ...
which in 1811–12 produced a series of earthquakes that are the largest known in the contiguous United States. Seismologists estimate 90% probability of a magnitude 6.0 earthquake by 2040 and 7-10% probability of a magnitude 8.0, such tremors could create significant damage across a large region of the central U.S. including St. Louis. Near the southern boundary of the City of St. Louis (separating it from St. Louis County) is the
River des Peres The River des Peres (French: ''rivière des Pères'') () is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed May 13, 2011 metropolitan river in St. Louis, Missouri. It is the backbo ...
, virtually the only river or stream within the city limits that is not entirely underground. Most of River des Peres was either channelized or put underground in the 1920s and early 1930s. The lower section of the river was the site of some of the worst flooding of the
Great Flood of 1993 The Great Flood of 1993 (or Great Mississippi and Missouri Rivers Flood of 1993) was a flood that occurred in the Midwestern United States, along the Mississippi and Missouri rivers and their tributaries, from April to October 1993. The flood wa ...
. Near the central, western boundary of the city is
Forest Park A forest park is a park whose main theme is its forest of trees. Forest parks are found both in the mountains and in the urban environment. Examples Chile * Forest Park, Santiago China *Gongqing Forest Park, Shanghai * Mufushan National Fores ...
, site of the 1904
World's fair A world's fair, also known as a universal exhibition or an expo, is a large international exhibition designed to showcase the achievements of nations. These exhibitions vary in character and are held in different parts of the world at a specif ...
, the
Louisiana Purchase Exposition The Louisiana Purchase Exposition, informally known as the St. Louis World's Fair, was an World's fair, international exposition held in St. Louis, Missouri, United States, from April 30 to December 1, 1904. Local, state, and federal funds tota ...
of 1904, and the
1904 Summer Olympics The 1904 Summer Olympics (officially the Games of the III Olympiad and also known as St. Louis 1904) were an international multi-sport event held in St. Louis, Missouri, United States, from 29 August to 3 September 1904, as part of an extended s ...
, the first
Olympic Games The modern Olympic Games or Olympics (french: link=no, Jeux olympiques) are the leading international sporting events featuring summer and winter sports competitions in which thousands of athletes from around the world participate in a var ...
held in North America. At the time, St. Louis was the fourth most populous city in the United States. The Missouri River forms the northern border of St. Louis County, exclusive of a few areas where the river has changed its course. The
Meramec River The Meramec River (), sometimes spelled Maramec River, is one of the longest free-flowing waterways in the U.S. state of Missouri, draining Blanc, Caldwell, and Hawk. "Location" while wandering Blanc, Caldwell, and Hawk. "Executive Summary" fr ...
forms most of its southern border. To the east is the City and the
Mississippi River The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it f ...
. According to the
United States Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of the ...
, the city has a total area of 171.3 km² (66.2 mi²). 160.4 km² (61.9 mi²) of it is land and 11.0 km² (4.2 mi² or 6.39%) of it is water.


Metropolitan statistical area

The St. Louis
Metropolitan Statistical Area In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the area. Such regions are neither legally Incorporated town, incorporate ...
is the 19th largest by population in the United States, with 2,813,912 as of 2008. It includes St. Louis County (991,830), the independent City of St. Louis (319,294), the
Missouri counties There are 114 counties and one independent city in the U.S. State of Missouri. Following the Louisiana Purchase and the admittance of Louisiana into the United States in 1812, five counties were formed out of the Missouri Territory at the first ...
of Saint Charles (360,485),
Jefferson Jefferson may refer to: Names * Jefferson (surname) * Jefferson (given name) People * Thomas Jefferson (1743–1826), third president of the United States * Jefferson (footballer, born 1970), full name Jefferson Tomaz de Souza, Brazilian foo ...
(217,679),
Franklin Franklin may refer to: People * Franklin (given name) * Franklin (surname) * Franklin (class), a member of a historical English social class Places Australia * Franklin, Tasmania, a township * Division of Franklin, federal electoral d ...
(100,898),
Lincoln Lincoln most commonly refers to: * Abraham Lincoln (1809–1865), the sixteenth president of the United States * Lincoln, England, cathedral city and county town of Lincolnshire, England * Lincoln, Nebraska, the capital of Nebraska, U.S. * Lincoln ...
(52,775) and
Warren A warren is a network of wild rodent or lagomorph, typically rabbit burrows. Domestic warrens are artificial, enclosed establishment of animal husbandry dedicated to the raising of rabbits for meat and fur. The term evolved from the medieval Angl ...
(31,214), and the
Illinois counties There are 102 counties in Illinois. The largest of these by population is Cook County, home to Chicago and the second-most populous county in the United States, while the smallest is Hardin County. The largest by land area is McLean County whi ...
of
Madison Madison may refer to: People * Madison (name), a given name and a surname * James Madison (1751–1836), fourth president of the United States Place names * Madison, Wisconsin, the state capital of Wisconsin and the largest city known by this ...
(267,038),
Saint Clair Saint Clair (also spelled St. Clair, St Clair or even Sinclair, and sometimes also pronounced that way) may refer to: Saints * Clair of Nantes (3rd century), first bishop of Nantes, the Saint named Clair * Clare of Assisi (1194–1253), source na ...
(261,409), Macoupin (48,143),
Clinton Clinton is an English toponymic surname, indicating one's ancestors came from English places called Glympton or Glinton.Hanks, P. & Hodges, F. ''A Dictionary of Surnames''. Oxford University Press, 1988 Clinton has frequently been used as a given ...
(36,470), Monroe (32,335),
Jersey Jersey ( , ; nrf, Jèrri, label=Jèrriais ), officially the Bailiwick of Jersey (french: Bailliage de Jersey, links=no; Jèrriais: ), is an island country and self-governing Crown Dependencies, Crown Dependency near the coast of north-west F ...
(22,451),
Bond Bond or bonds may refer to: Common meanings * Bond (finance), a type of debt security * Bail bond, a commercial third-party guarantor of surety bonds in the United States * Chemical bond, the attraction of atoms, ions or molecules to form chemical ...
(18,253), and
Calhoun John C. Calhoun (1782–1850) was the 7th vice president of the United States. Calhoun can also refer to: Surname * Calhoun (surname) Inhabited places in the United States *Calhoun, Georgia *Calhoun, Illinois *Calhoun, Kansas *Calhoun, Kentucky ...
(5,101).


Cityscape

The city is divided into 79 neighborhoods. The divisions have no legal standing, although some neighborhood associations administer grants or hold veto power over historic-district development. Nevertheless, the social and political influence of neighborhood identity is profound. Some hold avenues of massive stone edifices built as palaces for heads of state visiting the 1904 World's Fair. Others offer tidy working-class bungalows, loft districts, or areas hard-hit by social problems and unemployment. Many of them have retained - quite consciously and deliberately - a camaraderie that is missing from many American towns today. Among the best-known, architecturally significant, or well-visited neighborhoods are
Downtown ''Downtown'' is a term primarily used in North America by English speakers to refer to a city's sometimes commercial, cultural and often the historical, political and geographic heart. It is often synonymous with its central business distric ...
, Midtown, Benton Park, Carondelet, the
Central West End The Central West End is a neighborhood in St. Louis, Missouri, stretching from Midtown's western edge to Union Boulevard and bordering on Forest Park with its outstanding array of free cultural institutions. It includes the Cathedral Basilica of ...
, Clayton/Tamm (Dogtown), Dutchtown South, Forest Park Southeast,
Grand Center The Grand Center Arts District is located in the Midtown St. Louis Historic District (on the National Register of Historic Places) north of the Saint Louis University campus. Referred to colloquially as Grand Center, the neighborhood's formal na ...
, The Hill, Lafayette Square, Shaw (home to the
Missouri Botanical Garden The Missouri Botanical Garden is a botanical garden located at 4344 Shaw Boulevard in St. Louis, Missouri. It is also known informally as Shaw's Garden for founder and philanthropist Henry Shaw. Its herbarium, with more than 6.6 million spe ...
and named after the Garden's founder, Henry Shaw), Southwest Garden,
Soulard __NOTOC__ Soulard ( ) is a historic neighborhood in St. Louis, Missouri. It is the home of Soulard Farmers Market, the oldest farmers' market west of the Mississippi River. Soulard is one of ten certified local historic districts in the city of ...
, Tower Grove East, Tower Grove South, Hortense Place and Wydown/Skinker.


Climate

The climate is
humid subtropical A humid subtropical climate is a zone of climate characterized by hot and humid summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between latitudes 25° and 40° ...
(
Köppen Köppen is a German surname. Notable people with the surname include: * Bernd Köppen (born 1951), German pianist and composer * Carl Köppen (1833-1907), German military advisor in Meiji era Japan * Edlef Köppen (1893–1939), German author and ...
: ''Cfa''), but all around
Greater St. Louis Greater St. Louis is a bi-state metropolitan area that completely surrounds and includes the independent city of St. Louis, the principal city. It includes parts of both Missouri and Illinois. The city core is on the Mississippi Riverfront on t ...
has a
humid continental climate A humid continental climate is a climatic region defined by Russo-German climatologist Wladimir Köppen in 1900, typified by four distinct seasons and large seasonal temperature differences, with warm to hot (and often humid) summers and freezing ...
(''Dfa'') through the
USA The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
isoterm, with a winter that sustains in the coldest month temperatures below 0 ° C more easily, clear evidence of an
urban heat island An urban heat island (UHI) is an urban or metropolitan area that is significantly warmer than its surrounding rural areas due to human activities. The temperature difference is usually larger at night than during the day, and is most apparen ...
, which in the future may cover an even larger area and agglutinate cities and villages to the south. It straddles the border between
USDA Plant Hardiness Zone A hardiness zone is a geographic area defined as having a certain average annual minimum temperature, a factor relevant to the survival of many plants. In some systems other statistics are included in the calculations. The original and most wide ...
s 6B and 7A, indicating the coldest temperature of the year is typically around . With neither large mountains nor large bodies of water to moderate its temperature, it is subject to both cold Arctic air and hot, humid tropical air from the
Gulf of Mexico The Gulf of Mexico ( es, Golfo de México) is an oceanic basin, ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of ...
. The city has four distinct seasons. Spring is the wettest season and produces severe weather ranging from tornadoes to
winter storm A winter storm is an event in which wind coincides with varieties of precipitation that only occur at freezing temperatures, such as snow, mixed snow and rain, or freezing rain. In temperate continental climates, these storms are not necessar ...
s. Summers are hot and humid; temperatures of or higher occur 43 days a year.The Climatology of St. Louis and the Bi-State Area. http://www.crh."NWS St. Louis, MO (LSX)".gov/lsx/?n=cli_of_stl The average window for such temperatures is May 19 thru September 14. Fall is mild with lower humidity and can produce intermittent bouts of heavy rainfall with the first freeze of the season on average falling on November 2 (the last on average falls on April 3); the first measurable () snow, often not counting flurries, on average occurs on December 4 (the last on average falls on March 17). Winters can be cold and snowy with temperatures frequently below freezing. Winter storm systems, such as
Alberta clipper An Alberta clipper, also known as an Alberta low, Alberta cyclone, Alberta lee cyclone, Canadian clipper, or simply clipper, is a fast-moving low-pressure system that originates in or near the Canadian province of Alberta just east of the Rocky ...
s and
Panhandle hook A panhandle hook (also called a pan handle hook or Texas hooker) is a relatively infrequent winter storm system whose cyclogenesis occurs in the South to southwestern United States from the late fall through winter and into the early spring months ...
s, can bring days of heavy freezing rain, ice pellets, and snowfall. The average annual temperature recorded at nearby
Lambert–St. Louis International Airport St. Louis Lambert International Airport is the primary commercial airport serving metropolitan St. Louis, Missouri, United States. Commonly referred to as Lambert Field or simply Lambert, it is the largest and busiest airport in the state o ...
, is , and average precipitation is about . The daily average temperature in July is , while in January it is , although this varies from year to year. Both and temperatures can be seen on an average 2 or 3 days per year. The official record low is on January 5, 1884, although there were unofficial readings of on January 29, 1873; and the record high is on July 14, 1954; the coldest high on record was on December 24, 1983, while, conversely, the warmest low on record was on July 25, 2012 and July 24, 1901. July 2012 was the hottest month in the 138-year recorded weather temperatures in St. Louis history starting in 1874, with an average daily temperature of . Average annual temperatures are "about 3 degrees warmer" overall than they were in the 1920s. Winter (December through February) is the driest season, with an average of precipitation. The average seasonal snowfall is , typically falling from December to March. The heaviest one-day snowfall total was on February 26, 1906. Spring (March through May) is typically the wettest season, with of precipitation; however, the heaviest 24-hour rainfall total was on July 26, 2022. Dry spells lasting one to two weeks are common during the growing seasons. St. Louis experiences
thunderstorm A thunderstorm, also known as an electrical storm or a lightning storm, is a storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere, known as thunder. Relatively weak thunderstorms are someti ...
s 48 days a year on average. Especially in the spring, these storms can often be severe, with high winds, large
hail Hail is a form of solid precipitation. It is distinct from ice pellets (American English "sleet"), though the two are often confused. It consists of balls or irregular lumps of ice, each of which is called a hailstone. Ice pellets generally fal ...
and tornadoes. Lying within the hotbed of
Tornado Alley Tornado Alley is a loosely defined area of the central United States where tornadoes are most frequent. The term was first used in 1952 as the title of a research project to study severe weather in areas of Texas, Louisiana, Oklahoma, Kansas, So ...
, St. Louis reigns as one of the most frequently tornadic metropolitan areas, and has an extensive history of particularly damaging tornadoes. Severe flooding, such as the
Great Flood of 1993 The Great Flood of 1993 (or Great Mississippi and Missouri Rivers Flood of 1993) was a flood that occurred in the Midwestern United States, along the Mississippi and Missouri rivers and their tributaries, from April to October 1993. The flood wa ...
, may occur in spring and summer; the (often rapid) melting of thick snow cover upstream either the Missouri or Mississippi Rivers can contribute to springtime flooding. Some late autumns feature the warm weather known as
Indian summer An Indian summer is a period of unseasonably warm, dry weather that sometimes occurs in autumn in temperate regions of the northern hemisphere. Several sources describe a true Indian summer as not occurring until after the first frost, or more s ...
; some years see roses in bloom as late as early December.


Flora and fauna

Before the founding of the city, the area was prairie and open forest maintained by burning by Native Americans. Trees are mainly
oak An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably ''L ...
,
maple ''Acer'' () is a genus of trees and shrubs commonly known as maples. The genus is placed in the family Sapindaceae.Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008 nd more or less continuously updated since http ...
, and
hickory Hickory is a common name for trees composing the genus ''Carya'', which includes around 18 species. Five or six species are native to China, Indochina, and India (Assam), as many as twelve are native to the United States, four are found in Mexi ...
, similar to the forests of the nearby
Ozarks The Ozarks, also known as the Ozark Mountains, Ozark Highlands or Ozark Plateau, is a physiographic region in the U.S. states of Missouri, Arkansas, Oklahoma and the extreme southeastern corner of Kansas. The Ozarks cover a significant port ...
; common understory trees include
eastern redbud ''Cercis canadensis'', the eastern redbud, is a large deciduous shrub or small tree, native to eastern North America from southern Michigan south to central Mexico, east to New Jersey. Species thrive as far west as California and as far north as ...
,
serviceberry ''Amelanchier'' ( ), also known as shadbush, shadwood or shadblow, serviceberry or sarvisberry (or just sarvis), juneberry, saskatoon, sugarplum, wild-plum or chuckley pear,A Digital Flora of Newfoundland and Labrador Vascular Plants/ref> is a g ...
, and
flowering dogwood ''Cornus florida'', the flowering dogwood, is a species of flowering tree in the family Cornaceae native to eastern North America and northern Mexico. An endemic population once spanned from southernmost coastal Maine south to northern Florida ...
.
Riparian A riparian zone or riparian area is the interface between land and a river or stream. Riparian is also the proper nomenclature for one of the terrestrial biomes of the Earth. Plant habitats and communities along the river margins and banks ar ...
areas are forested with mainly
American sycamore ''Platanus occidentalis'', also known as American sycamore, American planetree, western plane, occidental plane, buttonwood, and water beech, is a species of ''Platanus'' native to the eastern and central United States, the mountains of northeas ...
. Most of the residential area of the city is planted with large native shade trees. The largest native forest area is found in Forest Park. In autumn, the changing color of the trees is notable. Most species here are typical of the Eastern Woodland, although numerous decorative non-native species are found; the most notable invasive species is
Japanese honeysuckle ''Lonicera japonica'', known as Japanese honeysuckle and golden-and-silver honeysuckle, is a species of honeysuckle native to eastern Asia. It is often grown as an ornamental plant, but has become an invasive species in a number of countries. Jap ...
, which is actively removed from some parks. Large
mammal Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or ...
s found in the city include urbanized
coyote The coyote (''Canis latrans'') is a species of canis, canine native to North America. It is smaller than its close relative, the wolf, and slightly smaller than the closely related eastern wolf and red wolf. It fills much of the same ecologica ...
s and occasionally a stray
whitetail deer The white-tailed deer (''Odocoileus virginianus''), also known as the whitetail or Virginia deer, is a medium-sized deer native to North America, Central America, and South America as far south as Peru and Bolivia. It has also been introduced t ...
.
Eastern gray squirrel The eastern gray squirrel (''Sciurus carolinensis''), also known, particularly outside of North America, as simply the grey squirrel, is a tree squirrel in the genus ''Sciurus''. It is native to eastern North America, where it is the most prodi ...
,
cottontail rabbit Cottontail rabbits are the leporid species in the genus ''Sylvilagus'', found in the Americas. Most ''Sylvilagus'' species have stub tails with white undersides that show when they retreat, giving them their characteristic name. However, this ...
, and other rodents are abundant, as well as the nocturnal and rarely seen
opossum Opossums () are members of the marsupial order Didelphimorphia () endemic to the Americas. The largest order of marsupials in the Western Hemisphere, it comprises 93 species in 18 genera. Opossums originated in South America and entered North ...
.
Groundhog The groundhog (''Marmota monax''), also known as a woodchuck, is a rodent of the family Sciuridae, belonging to the group of large ground squirrels known as marmots. The groundhog is a lowland creature of North America; it is found through mu ...
s are a common sight along the
Mississippi River The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it f ...
, and
beaver Beavers are large, semiaquatic rodents in the genus ''Castor'' native to the temperate Northern Hemisphere. There are two extant species: the North American beaver (''Castor canadensis'') and the Eurasian beaver (''C. fiber''). Beavers ar ...
are also seen. Large bird species are abundant in parks and include
Canada goose The Canada goose (''Branta canadensis''), or Canadian goose, is a large wild goose with a black head and neck, white cheeks, white under its chin, and a brown body. It is native to the arctic and temperate regions of North America, and it is o ...
,
mallard duck The mallard () or wild duck (''Anas platyrhynchos'') is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa, and has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Argen ...
, as well as
shorebird 245px, A flock of Dunlins and Red knots">Red_knot.html" ;"title="Dunlins and Red knot">Dunlins and Red knots Waders or shorebirds are birds of the order Charadriiformes commonly found wikt:wade#Etymology 1, wading along shorelines and mudflat ...
s, including the
great egret The great egret (''Ardea alba''), also known as the common egret, large egret, or (in the Old World) great white egret or great white heron is a large, widely distributed egret. The four subspecies are found in Asia, Africa, the Americas, and ...
and
great blue heron The great blue heron (''Ardea herodias'') is a large wading bird in the heron family Ardeidae, common near the shores of open water and in wetlands over most of North America and Central America, as well as the Caribbean and the Galápagos ...
.
Gulls Gulls, or colloquially seagulls, are seabirds of the family Laridae in the suborder Lari. They are most closely related to the terns and skimmers and only distantly related to auks, and even more distantly to waders. Until the 21st century, m ...
are common along the Mississippi River; these species typically follow
barge Barge nowadays generally refers to a flat-bottomed inland waterway vessel which does not have its own means of mechanical propulsion. The first modern barges were pulled by tugs, but nowadays most are pushed by pusher boats, or other vessels ...
traffic. Large flocks of
feral pigeons Feral pigeons (''Columba livia domestica'' or ''Columba livia forma urbana''), also called city doves, city pigeons, or street pigeons,Nagy, Kelsi, and Johnson, Phillip David. ''Trash animals: how we live with natures filthy, feral, invasive, an ...
make their home at 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, to the north, and t ...
and MLK Bridge. Winter populations of
bald eagle The bald eagle (''Haliaeetus leucocephalus'') is a bird of prey found in North America. A sea eagle, it has two known subspecies and forms a species pair with the white-tailed eagle (''Haliaeetus albicilla''), which occupies the same niche as ...
s are found by the Mississippi River around the
Chain of Rocks Bridge The old Chain of Rocks Bridge spans the Mississippi River on the north edge of St. Louis, Missouri. The eastern end of the bridge is on Chouteau Island (part of Madison, Illinois), while the western end is on the Missouri shoreline. Its most not ...
. The city is on the
Mississippi Flyway The Mississippi Flyway is a bird migration route that generally follows the Mississippi, Missouri, and Lower Ohio Rivers in the United States across the western Great Lakes to the Mackenzie River and Hudson Bay in Canada. The main endpoints of t ...
, used by migrating birds, and has a large variety of small bird species, common to the eastern U.S. The
Eurasian tree sparrow The Eurasian tree sparrow (''Passer montanus'') is a passerine bird in the sparrow family with a rich chestnut crown and nape, and a black patch on each pure white cheek. The sexes are similarly plumaged, and young birds are a duller version ...
, an introduced species, is limited in North America to the counties surrounding St. Louis.
Tower Grove Park Tower Grove Park is a municipal park in the city of St. Louis, Missouri. Most of its land was donated to the city by Henry Shaw in 1868. It is on 289 acres (1.17 km²) adjacent to the Missouri Botanical Garden, another of Shaw's legacies. I ...
is a well-known birdwatching area in the city. Frogs are commonly found in the springtime, especially after extensive wet periods. Common species include the
American toad The American toad (''Anaxyrus americanus'') is a common species of toad found throughout Canada and the eastern United States. It is divided into three subspecies: the eastern American toad (''A. a. americanus''), the dwarf American toad (''A. a ...
and species of chorus frogs, commonly called " spring peepers" that are found in nearly every pond. Some years have outbreaks of
cicada The cicadas () are a superfamily, the Cicadoidea, of insects in the order Hemiptera (true bugs). They are in the suborder Auchenorrhyncha, along with smaller jumping bugs such as leafhoppers and froghoppers. The superfamily is divided into two ...
s or
ladybugs Coccinellidae () is a widespread family of small beetles ranging in size from . They are commonly known as ladybugs in North America and ladybirds in Great Britain. Some entomologists prefer the names ladybird beetles or lady beetles as they ...
.
Mosquitos Mosquitoes (or mosquitos) are members of a group of almost 3,600 species of small flies within the family Culicidae (from the Latin ''culex'' meaning "gnat"). The word "mosquito" (formed by ''mosca'' and diminutive ''-ito'') is Spanish for "litt ...
and
houseflies The housefly (''Musca domestica'') is a fly of the suborder Cyclorrhapha. It is believed to have evolved in the Cenozoic Era, possibly in the Middle East, and has spread all over the world as a commensal of humans. It is the most common f ...
are common
insect Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs ...
nuisances; because of this, windows are nearly universally fitted with
screens Screen or Screens may refer to: Arts * Screen printing (also called ''silkscreening''), a method of printing * Big screen, a nickname associated with the motion picture industry * Split screen (filmmaking), a film composition paradigm in which mul ...
, and "screened-in"
porch A porch (from Old French ''porche'', from Latin ''porticus'' "colonnade", from ''porta'' "passage") is a room or gallery located in front of an entrance of a building. A porch is placed in front of the facade of a building it commands, and form ...
es are common in homes of the area. Populations of
honey bees A honey bee (also spelled honeybee) is a eusocial flying insect within the genus ''Apis'' of the bee clade, all native to Afro-Eurasia. After bees spread naturally throughout Africa and Eurasia, humans became responsible for the current cosmo ...
have sharply declined in recent years, and numerous species of
pollinator A pollinator is an animal that moves pollen from the male anther of a flower to the female stigma of a flower. This helps to bring about fertilization of the ovules in the flower by the male gametes from the pollen grains. Insects are the maj ...
insects have filled their ecological niche.


Adjacent communities

The following communities border the city of St. Louis directly:
*
Cahokia, Illinois Cahokia was a village in St. Clair County, Illinois, United States. It was located east of the Mississippi River in the Greater St. Louis metropolitan area. As of the 2010 census, 15,241 people lived in the village, a decline from 16,391 in 200 ...
*
East Carondelet, Illinois East Carondelet is a village in St. Clair County, Illinois, United States. The population was 499 as of the 2010 census. Geography According to the 2010 census, East Carondelet has a total area of , of which (or 72.33%) is land and (or 27.67% ...
*
East St. Louis, Illinois East St. Louis is a city in St. Clair County, Illinois. 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 region of Southern Illinois. Once a b ...
*
Madison, Illinois Madison is a city in Madison and St. Clair counties in the U.S. state of Illinois. The population was 3,891 at the 2010 census. It is home to World Wide Technology Raceway at Gateway and the first Bulgarian Orthodox church in the United States. ...
*
Sauget, Illinois Sauget ( ) is a village in St. Clair County, Illinois, United States. It is part of Greater St. Louis. The population was 141 at the 2020 census, down from 159 in 2010. Geography Sauget is located at (38.587013, -90.166690). According to the ...
*
Bellefontaine Neighbors, Missouri Bellefontaine Neighbors ( ) is an inner-ring suburb city in St. Louis County, Missouri, St. Louis County, Missouri, United States. The population was 10,860 at the 2010 United States Census, 2010 census. Geography Bellefontaine Neighbors is a sec ...
*
Clayton, Missouri Clayton is a city in and the seat of St. Louis County, Missouri. It borders the independent city of St. Louis. The population was 17,355 at the 2020 census. Organized in 1877, the city was named after Ralph Clayton, who donated the land for the ...
*
Glasgow Village, Missouri Glasgow Village is a census-designated place (CDP) in St. Louis County, Missouri, United States. The population was 5,429 at the 2010 census. Geography According to the United States Census Bureau, the CDP has a total area of , all land. Demo ...
*
Hillsdale, Missouri Hillsdale is a village in St. Louis County, Missouri, St. Louis County, Missouri, United States. The population was 1,478 at the 2010 census. Geography Hillsdale is located at (38.683451, -90.286070). According to the United States Census Bureau ...
*
Jennings, Missouri Jennings is a city in St. Louis County, Missouri, United States. Per the 2020 census, the population was 12,895. Geography Jennings is located at (38.721100, -90.261428). According to the United States Census Bureau, the city has a total area ...
*
Lemay, Missouri Lemay is a census-designated place (CDP) in south St. Louis County, Missouri, United States. The population was 16,645 at the 2010 census. History Lemay was named after Francois Lemai, who operated a ferry boat across the Meramec River in the e ...
*
Mackenzie, Missouri Mackenzie is an unincorporated community in St. Louis County, Missouri, United States. The population was 134 at the 2010 census. In April 2018, the village of Mackenzie voted to dissolve, reverting to unincorporated St. Louis County, effective m ...
*
Maplewood, Missouri Maplewood is an inner-ring suburb of St. Louis, located in St. Louis County, Missouri, United States. History Maplewood was established around the turn of the 20th century. Maplewood was one of the early suburbs of St. Louis. Located just outside ...
*
Pine Lawn, Missouri Pine Lawn is a city in St. Louis County, Missouri, United States. The population was 3,275 at the 2010 census. Geography Pine Lawn is located at (38.695101, -90.275543). According to the United States Census Bureau, the city has a total area of ...
*
Richmond Heights, Missouri Richmond Heights is a city in St. Louis County, Missouri, St. Louis County, Missouri. It is an inner-ring suburb of St. Louis, Missouri, United States. The population was 8,603 at the 2010 census. According to Robert L. Ramsay (academic), Robert L. ...
* Riverview, Missouri *
Shrewsbury, Missouri Shrewsbury is an inner-ring suburb of St. Louis, located in St. Louis County, Missouri, United States. The population was 6,254 at the 2010 census. History Shrewsbury was officially platted in 1889. The land which became Shrewsbury originally bel ...
*
Spanish Lake, Missouri Spanish Lake is a census-designated place (CDP) in St. Louis County, Missouri, United States. The population was 18,413 at the 2020 census. Geography Spanish Lake is located at (38.785849, -90.212879). The Spanish Lake community is located in ...
*
University City, Missouri University City (colloquially, U. City) is an inner-ring suburb of the city of St. Louis in St. Louis County, Missouri, St. Louis County, in the U.S. state of Missouri. The population was measured at 35,065 by the 2020 United States Census, 2020 c ...
*
Wellston, Missouri Wellston is a city in St. Louis County, Missouri, United States, along the northwest border of the city of St. Louis. The population was 2,313 at the 2010 census. History Wellston was incorporated as a city in 1909; due to "government difficulti ...
In addition to the above named places, there are unincorporated parts of
Madison County, Illinois Madison County is a county in the U.S. state of Illinois. It is a part of the Metro East in southern Illinois. According to the 2020 census, it had a population of 264,776, making it the eighth-most populous county in Illinois and the most popu ...
;
St. Clair County, Illinois St. Clair County is the oldest county in Illinois; its western border is formed by the Mississippi River, bordering Missouri. It is a part of the Metro East in southern Illinois. At the 2020 United States census, it had a population of 257,400 ...
; and
St. Louis County, Missouri St. Louis County is located in the eastern-central portion of 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. At the 2020 census, th ...
which border St. Louis. The Illinois communities of
Brooklyn Brooklyn () is a borough of New York City, coextensive with Kings County, in the U.S. state of New York. Kings County is the most populous county in the State of New York, and the second-most densely populated county in the United States, be ...
and
Venice Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 small islands that are separated by canals and linked by over 400  ...
lie across the
Mississippi River The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it f ...
, but do not border St. Louis because the river itself is not part of their territory.


See also

* Climate of Missouri


References

{{DEFAULTSORT:Geography Of St. Louis, Missouri