St. Charles is a city located in Winona County Minnesota. With a 2020 population of 3,738, it is the 186th largest city in Minnesota and the 5593rd largest city in the United States . St. Charles is currently declining at a rate of -0.27% annually but its population has increased by 0.08% since the most recent census, which recorded a population of 3,735 in 2010. St. Charles reached it's highest population of 3,768 in 2018. Spanning over 4 miles, St. Charles has a population density of 976 people per square mile.
The average household income in St. Charles is $81,313 with a poverty rate of 5.19%. The median rental costs in recent years comes to $611 per month, and the median house value is $168,300. The median age in St. Charles is 34.4 years, 33.3 years for males, and 35.8 years for females.