St Marys Real EstateSt Marys is located in Georgia. St Marys, Georgia has a population of 17,787. St Marys is more family-centric than the surrounding county with 37.59% of the households containing married families with children. The county average for households married with children is 34.71%. The median household income in St Marys, Georgia is $56,828. The median household income for the surrounding county is $53,687 compared to the national median of $57,652. The median age of people living in St Marys is 31.7 years. St Marys WeatherThe average high temperature in July is 89.8 degrees, with an average low temperature in January of 42 degrees. The average rainfall is approximately 50 inches per year, with 0 inches of snow per year. St Marys MapReal estate near St MarysNearby CitiesNearby Cities Homes for Sale |