Saint Charles Real EstateSaint Charles is located in Iowa. Saint Charles, Iowa has a population of 2,874. Saint Charles is less family-centric than the surrounding county with 36.1% of the households containing married families with children. The county average for households married with children is 36.27%. The median household income in Saint Charles, Iowa is $72,979. The median household income for the surrounding county is $60,077 compared to the national median of $57,652. The median age of people living in Saint Charles is 41.5 years. Saint Charles WeatherThe average high temperature in July is 84.7 degrees, with an average low temperature in January of 11.9 degrees. The average rainfall is approximately 36.2 inches per year, with 27.9 inches of snow per year. Saint Charles MapReal estate near Saint CharlesNearby CitiesNearby Cities Homes for Sale |