St Marys is located in Iowa. St Marys, Iowa has a population of 116. St Marys is less family-centric than the surrounding county with 11.54% of the households containing married families with children. The county average for households married with children is 36.92%.
The median household income in St Marys, Iowa is $58,125. The median household income for the surrounding county is $85,189 compared to the national median of $69,021. The median age of people living in St Marys is 51.8 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.
