St Charles is located in Iowa. St Charles, Iowa has a population of 713. St Charles is less family-centric than the surrounding county with 28.72% of the households containing married families with children. The county average for households married with children is 35.89%.
The median household income in St Charles, Iowa is $76,000. The median household income for the surrounding county is $79,306 compared to the national median of $69,021. The median age of people living in St Charles is 38.7 years.
The average high temperature in July is 85 degrees, with an average low temperature in January of 11.4 degrees. The average rainfall is approximately 36.3 inches per year, with 27.8 inches of snow per year.