About Marietta, GAMarietta is located in Georgia. Marietta, Georgia has a population of 62,364. Marietta is less family-centric than the surrounding county with 28% households with children. The county percentage for households with children is 32%. The median household income in Marietta, Georgia is $50,924. The median household income for the surrounding county is $69,782 compared to the national median of $57,525. The median age of people living in Marietta is 35.4 years. Marietta WeatherThe average high temperature in July is 88.42 degrees, with an average low temperature in January of 28.79 degrees. The annual precipitation is 52.22. Marietta MapMarietta real estate officesReal estate near Marietta |