As of the 2000 census, the city had a total population of 58,748, making it one of metro Atlanta's largest suburbs. Census estimates of 2007 indicate a population of 67,021[2]. Marietta is the third-largest of three principal cities (by population) of and is included in the Atlanta-Sandy Springs-Marietta, Georgia metropolitan statistical area, which is included in the Atlanta-Sandy Springs-Gainesville, Georgia-Alabama (part) combined statistical area.
In 2008, the mayor of Marietta was Bill Dunaway.
As of the census of 2000, there were 58,748 people, 23,895 households, and 13,022 families residing in the city. The population density was 2,684.1 people per square mile (1,036.2/km²). There were 25,227 housing units at an average density of 1,152.6/sq mi (445.0/km²). The racial makeup of the city was 56.49% White, 33.50% African American, 0.32% Native American, 2.97% Asian, 0.09% Pacific Islander, 7.99% from other races, and 2.65% from two or more races. Hispanic or Latino of any race were 16.93% of the population.
There were 23,895 households out of which 27.8% had children under the age of 18 living with them, 35.4% were married couples living together, 13.8% had a female householder with no husband present, and 45.5% were non-families. 32.8% of all households were made up of individuals and 6.9% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 3.05.
In the city the population was spread out with 22.4% under the age of 18, 14.1% from 18 to 24, 39.4% from 25 to 44, 15.7% from 45 to 64, and 8.3% who were 65 years of age or older. The median age was 30 years. For every 100 females there were 101.3 males. For every 101 females age 18 and over, there were 100.3 males.