Area codes in Kennesaw, Georgia
Kennesaw, Georgia uses 4 area codes — 770, 678, 470 and 943. The main Kennesaw area code is 770.
Area codes serving Kennesaw
Phone numbers in Kennesaw are written as ten digits — for example (770) 555-0190 — and fall in the Eastern Time zone.
How Kennesaw came to have 4 area codes
The original Kennesaw area code is 770, in service since 1995. As the area ran low on available numbers, overlay codes were added over the same region for new phone lines: 678 (1998), 470 (2010) and 943 (2022). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Kennesaw now uses all 4 codes and every local call is dialed with ten digits.
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Nearby cities
- Marietta area codes
- Roswell area codes
- Alpharetta area codes
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- Dalton area codes
- La Grange area codes
- Chattanooga area codes
More cities in Georgia
- Savannah area codes
- Augusta area codes
- Macon area codes
- Valdosta area codes
- Warner Robins area codes
- Statesboro area codes
Frequently asked questions
What is the area code for Kennesaw?
The main area code for Kennesaw, Georgia is 770. Kennesaw is now served by 4 area codes in total: 770, 678, 470, 943.
How many area codes does Kennesaw have?
Kennesaw has 4 area codes: 770, 678, 470, 943.
Why does Kennesaw have more than one area code?
As Kennesaw used up the numbers available in its original area code (770, in service since 1995), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Kennesaw number?
Dial all 10 digits — the area code (770 or 678 or 470 or 943) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.