The city of Marietta encompasses the following counties: Cobb. Marietta's government is comprised of the Mayor, who is currently R. Steve Tumlin, Jr., City Manager, who is currently William F. Bruton, Jr..
Marietta encompasses land area: 21.9 sq mi (56.7 km2), water area: 0.1 sq mi (0.3 km2). The elevation is 1,129 ft (344 m) above sea level. This equates to a population density of 2,600/sq mi (990/km2). The local time zone is EST (UTC-5).
Zip codes in Marietta include 30006-08, 30060-69, 30090. Local area codes are 770, 678. The Federal Information Processing Standard (FIPS) code for the city is 13-49756, which is used in computer filings when non-government agencies and contractors fulfill government contracts. Additional information and the official website of the city is found at www.mariettaga.gov.