Crystal Lake Park is a Missouri Class 4 city in St. Louis County, Missouri, United States. The population was 508 at the 2020 census. According to the United States Census Bureau, the city has a total area of 0.11 square miles, all land.
Country: United States
State: Missouri
County: St. Louis
Elevation: 584 ft (178 m)
Area code: 314
Named for: Crystal Lake Country Club (no longer exists)