St. Charles County

Population: 416,659

St. Charles County (pop. 416,659) — your citizen empowerment hub. Know your local laws, connect with officials, and build solutions with your community.

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Cities & Towns

• Dardenne Prairie city (pop. 13,803)
• Lake St. Louis city (pop. 18,661)
• O'Fallon city (pop. 94,074)
• St. Charles city (pop. 71,800)
• St. Peters city (pop. 59,413)
• Wentzville city (pop. 47,497)
• Wildwood city (pop. 34,851)