Crestwood is a city in St. Louis County, Missouri, United States, part of the Metropolitan Statistical Area known as Greater St. Louis. The population was 11,912 at the 2010 census.
Crestwood is home to several public parks, including Crestwood Park, featuring baseball and soccer fields, a playground, and tennis courts, and Whitecliff Park, featuring the Crestwood Community Center and the Crestwood Aquatic Center, a public water park. Adjacent to Whitecliff Park in the small city of Grantwood Village is the animal reserve owned by Anheuser-Busch called Grant's Farm, which is free and open to the public during the summer. Grant's Farm, now home to free-roaming buffalo, zebras, and deer among other animals, is located on property formerly owned by president Ulysses S. Grant in the period between the Mexican War and the Civil War.
Crestwood is the burial place of Sgt. John Sappington. He was a Revolutionary War soldier who was a personal bodyguard to Gen. George Washington at Valley Forge. He was also one of the pioneers at Fort Boonesborough in Madison County, Kentucky. The Sappingtons were large land owners in the area, and Mark and Thomas Sappington's homes still stand in the vicinity. The Sappington Cemetery is maintained by the City of Crestwood, and several Sappington descendants still pass through to maintain the family graves.