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Oakville, Missouri
Bee Tree County Park, Oakville, Missouri
Bee Tree County Park, Oakville, Missouri
Location of Oakville, Missouri
Location of Oakville, Missouri
Country United States
State Missouri
County St. Louis
 • Total 17.73 sq mi (45.92 km2)
 • Land 15.93 sq mi (41.26 km2)
 • Water 1.80 sq mi (4.66 km2)
600 ft (183 m)
 • Total 36,143
 • Density 2,268.9/sq mi (876.0/km2)
Time zone UTC-6 (Central (CST))
 • Summer (DST) UTC-5 (CDT)
Area code(s) 314
FIPS code 29-53876
GNIS feature ID 0756472
Website None

Oakville is a census-designated place (CDP) in south St. Louis County, Missouri, United States. The population was 36,143 at the 2010 census. Oakville is 18 miles south of the city of St. Louis and borders the Mississippi and Meramec rivers; the area is part of "South County" (south St. Louis County).


Oakville is located at 38°27′31″N 90°19′10″W / 38.45861°N 90.31944°W / 38.45861; -90.31944 (38.458620, -90.319324). According to the United States Census Bureau, the CDP has a total area of 17.73 square miles (45.92 km2), of which, 15.93 square miles (41.26 km2) of it is land and 1.80 square miles (4.66 km2) is water.


Historical population
Year Pop. ±%
2000 35,309 —    
2010 36,143 +2.4%

2010 census

As of the census of 2010, there were 36,143 people, 13,788 households, and 10,511 families living in the CDP. The population density was 2,268.9 inhabitants per square mile (876.0/km2). There were 14,314 housing units at an average density of 898.6 per square mile (347.0/km2). The racial makeup of the CDP was 96.0% White, 0.8% African American, 0.1% Native American, 1.8% Asian, 0.3% from other races, and 1.0% from two or more races. Hispanic or Latino of any race were 1.4% of the population.

There were 13,788 households, of which 32.4% had children under the age of 18 living with them, 65.4% were married couples living together, 7.7% had a female householder with no husband present, 3.2% had a male householder with no wife present, and 23.8% were non-families. 19.9% of all households were made up of individuals, and 8% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.02.

The median age in the CDP was 43.7 years. 22.8% of residents were under the age of 18; 8% were between the ages of 18 and 24; 21.1% were from 25 to 44; 33.9% were from 45 to 64; and 14.3% were 65 years of age or older. The gender makeup of the CDP was 49.0% male and 51.0% female.



Oakville belongs entirely to the Mehlville School District (R-9) and the St. Louis County Special School District. Oakville High School and Mehlville High School are the two high schools in the Mehlville School District, but only Oakville High School is located in the Oakville area. Oakville Middle School is also located within the Mehlville School district. There are three Catholic grade schools in Oakville: St. Francis of Assisi, Queen of All Saints, and St. Margaret Mary Alacoque.

Community colleges

St. Louis Community College's South County Education and University Center is located off Meramec Bottom Road at Lemay Ferry Road.

Public libraries

The St. Louis County Library Cliff Cave Branch is in Oakville CDP.

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