Cities in area code 678

41 localities · NANPA data, current as of July 28, 2026.

These are the cities and communities covered by 678 in Georgia. "Covered" means the locality is a rate center holding 678 prefixes; the largest are Atlanta Northeast, Atlanta Northwest, Atlanta.

Ranked by active prefixes, the code's territory runs through Atlanta Northeast, Atlanta Northwest, Atlanta, Atlanta South, Gainesville, Newnan, Cumming and Buford, and 32 smaller communities down to single-prefix localities.

38 of the localities fall within FCC top-100 metropolitan statistical areas; the rest are smaller communities.

41 of these localities are also reachable through other area codes — overlay territory where the same place answers to several codes.

All of the code's territory keeps Eastern time.

Remember that people keep numbers when they relocate, so a 678 number is a where-it-was-issued fact, not a where-they-are fact.

FAQ

What is the biggest city in area code 678?

Atlanta Northeast holds the most active prefixes (285), making it the code's largest numbering locality.

How many places does 678 cover?

41 rate centers in Georgia hold active 678 prefixes, from Atlanta Northeast down to communities with a single prefix.

Does a 678 number guarantee the caller lives in one of these places?

No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.