Area code 678 is one of metro Atlanta’s area codes. Read on to learn where the 678 area code is located, what time zone it’s in, and what area it covers.
Location and Coverage
Area code 678 is located in and around Atlanta, Georgia. It also covers several cities surrounding Atlanta, including Sandy Springs, Roswell, and Johns Creek.
The 678 area code includes a number of counties in Georgia, such as Fulton, Gwinnett, and DeKalb.
If you’re doing business in the Atlanta area, having a phone number with the 678 area code may help you establish a local presence.
Time Zone Information
Area code 678 is in the Eastern Time Zone, so it observes both Eastern Standard Time (EST) and Eastern Daylight Time (EDT).
During Eastern Standard Time, the area code is five hours behind Coordinated Universal Time/Greenwich Mean Time (UTC/GMT-5). During Eastern Daylight Time, it’s four hours behind (UTC/GMT-4).
If you’re calling someone in area code 678 from outside the Eastern Time Zone, be sure to factor in the time difference.
Daylight Saving Time
If you’re in the 678 area code, here are the Daylight Saving Time dates to remember for 2025:
- Daylight Saving Time starts on March 9, 2025, at 2:00 AM. (Spring Forward!)
- Daylight Saving Time ends on November 2, 2025, at 2:00 AM. (Fall Back!)
In Conclusion
If you live in or do business in metro Atlanta, it’s important to know that area code 678 is part of the local calling landscape. Understanding where it is and what time zone it’s in can help you communicate more effectively.