St Marys is located in Georgia. St Marys, Georgia has a population of 18,777. St Marys is more family-centric than the surrounding county with 33% households with children. The county percentage for households with children is 32%.
The median household income in St Marys, Georgia is $59,464. The median household income for the surrounding county is $60,681 compared to the national median of $66,222. The median age of people living in St Marys is 34.9 years.
The average high temperature in July is 89.8 degrees, with an average low temperature in January of 44.5 degrees. The annual precipitation is 50.39.