Dardenne Prairie is at the heart of the St Charles County's Golden Triangle.
Welcome to Dardenne Prairie
Dardenne Prairie is at the heart of the St Charles County's Golden Triangle. Located southwest of O'Fallon just east of Hwy 40. Although only about 5 acres, its served by three outstanding school districts. In late 2017, out of 86 of Missouri's biggest cities, the personal finance website WalletHub named the city of Dardenne Prairie as the second best place to raise a family in Missouri.