St Marys is located in Pennsylvania. St Marys, Pennsylvania has a population of 12,603. St Marys is less family-centric than the surrounding county with 23.5% of the households containing married families with children. The county average for households married with children is 26.13%.
The median household income in St Marys, Pennsylvania is $49,856. The median household income for the surrounding county is $49,876 compared to the national median of $57,652. The median age of people living in St Marys is 47.8 years.
The average high temperature in July is 78.4 degrees, with an average low temperature in January of 12.5 degrees. The average rainfall is approximately 44.6 inches per year, with 66.1 inches of snow per year.
