Fort Zumwalt Park

O'Fallon ( oh-FAL-ən) is a city in St. Charles County, Missouri, United States. It is part of the St. Louis metropolitan statistical area, located along Interstates 64 and 70 between Lake St. Louis and St. Peters. As of the 2020 census, O'Fallon had a population of 91,316, making it the most populous suburb of St. Louis, as well as the most populous municipality in St. Charles County and the 7th most populous in Missouri. O'Fallon's namesake in St. Clair County, Illinois, is also part of the St. Louis region. The two cities are one of the few pairs of same-named municipalities to be part of the same metro area.

St. Dominic High School is a private Roman Catholic high school in O'Fallon, Missouri. It is located in the Roman Catholic Archdiocese of Saint Louis.

St. Mary's Institute of O'Fallon, also known as the Motherhouse for the Congregation of the Sisters of the Adoration of the Most Precious Blood, is a historic convent, school, and national historic district located at O'Fallon, St. Charles County, Missouri. The district encompasses 11 contributing buildings and 1 contributing site (a cemetery). The main building is the three-story, Gothic Revival style motherhouse. Its original section was built in 1874, with a series of interconnected wings dating from 1874 through 1997 making for a complex, irregular plan building. The building includes the convent, two chapels, academy, novitiate, dining room, kitchen, gym, and infirmary. A part of the building houses the O'Fallon City Hall.: 5–6 It was added to the National Register of Historic Places in 2007.

Fort Zumwalt West High School, the third high school established in the Fort Zumwalt School District, is located in O'Fallon, Missouri. First opened for the 1998–1999 school year, the school now has an approximate enrollment of 2,000 students with an average daily attendance rate of nearly 94%.

CarShield Field, formerly T.R. Hughes Ballpark, is a stadium in O'Fallon, Missouri. It is primarily used for baseball, and was the home field of the River City Rascals Frontier League baseball team, until the team folded and ceased operations at the end of the 2019 season. Beginning in 2020, it became the home field for the O'Fallon Hoots of the Prospect League. CarShield Field became the host of the entire six–team 2020 CarShield Collegiate League upon the cancellation of the 2020 Prospect League season due to COVID-19. CarShield Field is home to a local high school baseball team, The Christian O'Fallon Eagles. It opened in 1999 with seating for 3,500 people, plus areas for 1,650 additional fans on lawn and outfield bleacher areas.

Fort Zumwalt South High School (FZS) is in the Fort Zumwalt School District in Saint Peters, Missouri, United States. In 1987, FZS was the second high school to be founded in the Fort Zumwalt District (after Fort Zumwalt North). Many extracurricular activities are offered, including basketball, soccer, swimming, volleyball, football, marching band, choir, National Honors Society, and other sport, academic, and arts activities. FZS participates in the A+ program.

Dardenne Township is an inactive township in St. Charles County, in the U.S. state of Missouri.Dardenne Township most likely was erected in 1818, taking its name from Dardenne Creek.

Christian High School is a private Christian high school in O'Fallon, Missouri, with many students in grades pre-K through 12. The school mascot is the Eagle and the school colors are teal, black, and white.

Fort Zumwalt North High School, the first high school established in its Fort Zumwalt School District, is located in O'Fallon, Missouri. Established in 1960 as Fort Zumwalt High School, the school moved to its current location in 1976. "North" was added to the school's name when the district's second high school opened in 1987.

Dardenne Prairie is a city in St. Charles County, Missouri, United States. The population was 12,743 at the 2020 census.