Marietta is located in central Cobb County, Georgia, United States,
and is the county's seat and largest city.Marietta is located in
central Cobb County, Georgia, United States, and is the county's seat
and largest city.As of the 2010 census, the city had a total
population of 56,579. The 2019 estimate is 60,867, making it one of
Atlanta's largest suburbs. Marietta is the fourth largest of the
principal cities (by population) of the Atlanta metropolitan area.The
origin of the name is uncertain. It is believed that the city was
named for Mary Cobb, the wife of U.S. Senator and Superior Court judge
Thomas Willis Cobb. Judge Cobb is the namesake of the county. Marietta, Georgia Top Movies & Young Movies