Area code 678

Where area code 678 is

NANPA lists 678 as an in-service geographic area code for Georgia, first put into service on January 6, 1998. It is an overlay: 678 and 404, 470, 770, and 943 cover the same territory, so neighbors on the same street can have different area codes. It is in the Eastern time zone. The places with the most assigned exchanges include Atlanta, Gainesville, Newnan, Cumming, and Buford. By population, its largest named places are Atlanta, Gainesville, Newnan, Canton, and Carrollton.

Where 678 numbers are local

678 holds 12% of the 6,301 central office codes assigned in Georgia, the 2nd most of the state's 10 codes. 36 Census places could be matched to rate centers with 678 exchanges; the most populous are Atlanta (520,000), Gainesville (47,712), Newnan (45,548), and Canton (38,049). Each place page lists the exact prefixes and carriers for that town.

Dialing 678 numbers

According to NANPA's dialing-plan data, local calls within 678 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit dialing permissible at service providers discretion"

Phone companies in area code 678

27 carriers hold the 785 central office codes assigned in 678. Paetec Itel, LLC has the most, with 159 (20%). 620 of the codes (79%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Rate centers and towns in 678

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 678 has codes in 42 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

678 code assignments over time

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 785 are assigned in 678, 98% of 800. 5 were assigned in 2020 or later.

Using area code 678 for business calls

For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.

Porting a number you already use in area code 678 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.