Cadet is an unincorporated community in Union Township in eastern Washington County, Missouri, United States. It is located on Route 47 about 6 miles (10 km) northeast of Potosi. The origin of its name is unknown. Cadet was founded in 1857 when the St. Louis, Iron Mountain and Southern Railway was built.
Elevation 801 feet. Land Area: 70.45 square miles Water Area: 0.32 square miles Latitude: 38.020743 Longitude: -90.745575 37°59′15″N 90°41′18″W / 37.98750°N 90.68833°W
Coordinates: 37°59′15″N 90°41′18″W / 37.98750°N 90.68833°W