Fort Gillem, Georgia Area Code
Fort Gillem, GA is officially utilizing an area code overlay in which area codes 404, 470, 678 and 943 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Fort Gillem, GA area code information read more about area codes 470, 678, 943 and 404 details and Georgia area codes.
Fort Gillem, GA is located in Clayton County and observes the Eastern Time Zone. View our Times by Area Code tool.