
St Charles
- County:
- St. Charles County
- County Seat:
- No
- Area (mi²):
- 25.201
- State:
- Missouri
St. Charles is a city located in St. Charles County, Missouri. St. Charles has a 2025 population of 72,480. St. Charles is currently growing at a rate of 0.47% annually and its population has increased by 2.4% since the most recent census, which recorded a population of 70,780 in 2020.
The average household income in St. Charles is $113,867 with a poverty rate of 6.01%. The median age in St. Charles is 38.9 years: 38.1 years for males, and 39.6 years for females.