770 Area CodeRoswell, GA
Area code 770 covers Roswell and nearby communities in Georgia, in the Eastern Time (ET) zone, home to about 2.1 million people across 149 cities. It overlays 404, 470, 678 and 943, so the region uses several codes and every local call needs all ten digits.
Overview
- Major City
- Roswell
- State
- Georgia (GA)
- Timezone
- Eastern Time (ET)
- Current Time
- Overlay
- Yes – shares area with 404, 470, 678, 943
Overview of the 770 Area Code
What is the 770 area code?
The 770 area code serves Roswell, Georgia, alongside other established area codes. When you see a 770 number, it indicates a local number within this geographic area.
Why was area code 770 created?
The 770 area code was introduced as an overlay to add numbers in Roswell once the existing area codes 404, 470, 678, and 943 began to run out of available prefixes. It added a new supply of numbers without requiring current residents to change their existing digits.
Geographic Coverage of the 770 Area Code
The 770 area code serves Roswell and surrounding areas in Georgia. It operates within the Eastern Time (ET) time zone. It complements the coverage of area codes 404, 470, 678, and 943. This area code covers several key cities, including:
- Sandy Springs
- Roswell
- Johns Creek
- Mableton
- Alpharetta
- Marietta
Got a call from a 770 number? It came from Roswell, GA. Since 770 overlays with 404, 470, 678, and 943, every local call in the region needs all ten digits to land on the right line. Inside 770, Roswell holds about 5% of the population; the rest is split across 148 smaller cities.
Roswell Area Codes Overview
Roswell is served by multiple area codes, reflecting its telecommunications needs. The 770 area code operates alongside 404, 470, 678, 943. Here are the area codes serving this region:
The introduction of the 770 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 770 cover?
| City | State | Population | % of Area Code | % of City |
|---|---|---|---|---|
| Sandy Springs | GA | 105,505 | 0% | 55% |
| Roswell | GA | 92,227 | 1% | 100% |
| Johns Creek | GA | 81,167 | 0% | 100% |
| Mableton | GA | 78,314 | 0% | 100% |
| Alpharetta | GA | 67,275 | 0% | 100% |
| Marietta | GA | 63,122 | 0% | 100% |
| Smyrna | GA | 57,177 | 0% | 96% |
| Dunwoody | GA | 51,795 | 0% | 100% |
| Gainesville | GA | 47,712 | 0% | 100% |
| Newnan | GA | 45,548 | 0% | 100% |
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 770 been reported for unwanted calls?
Yes – 706 unwanted-call complaints were reported to the FTC for numbers showing a 770 area code (May 29 – Jul 2, 2026).
- 65% robocalls
- ↑ 2% vs prior period
Most-reported subjects
- Other47%334
- Calls pretending to be government, businesses, or family and friends17%117
- Medical & prescriptions13%92
* Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-07-05.
Which prefixes and exchanges belong to area code 770?
78% assigned to a telco
- 83% Landline
- 17% Wireless
- 0% Unknown
| Prefix | Usage | Carrier |
|---|---|---|
| (770)200- | Landline | Level 3 Telecom Of Georgia |
| (770)201- | Wireless | Usa Mobility Wireless |
| (770)202- | Landline | Onvoy |
| (770)203- | Landline | Bandwidth.Com Clec |
| (770)204- | Landline | Southern Bell Tel & Tel |
| (770)205- | Landline | Southern Bell Tel & Tel |
| (770)206- | Landline | Southern Bell Tel & Tel |
| (770)207- | Landline | Windstream Georgia Communications |
| (770)208- | Wireless | Usa Mobility Wireless |
| (770)209- | Landline | Southern Bell Tel & Tel |
Frequently Asked Questions about the 770 Area Code
Who called me from a 770 number?
A 770 number is assigned to Roswell, Georgia, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 770 code to look nearby, so a 770 number doesn't prove the caller is local. Recently, 706 unwanted-call complaints were reported to the FTC for numbers showing the 770 code (65% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 770 a scam area code?
No area code is a scam on its own. 770 is a normal, officially assigned code for Roswell, Georgia. Spam callers spoof local codes to raise the odds you answer, so 770 on your caller ID says nothing about who is really calling. Recently, 706 unwanted-call complaints were reported to the FTC for numbers showing the 770 code (65% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 770 area code?
Repeated calls from different 770 numbers are usually spoofing: a robocaller rotates through 770 numbers so each call looks local and slips past simple blocks. Recently, 706 unwanted-call complaints were reported to the FTC for numbers showing the 770 code (65% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 770 number?
If you aren't expecting a 770 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 770 area code?
Block a single 770 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 770 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 770?
Area code 770 covers Roswell and the surrounding area in Georgia, spanning 149 cities with about 2,059,345 residents. It shares its area with overlay codes 404, 470, 678, 943.
Is 770 a real area code?
Yes. 770 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Roswell, Georgia. A real code can still show up on spoofed spam calls, so treat unknown 770 calls with normal caution.
What timezone is the 770 area code in?
The 770 area code is in the Eastern Time (ET). Because a number can be kept when someone moves or switches to VoIP, a specific 770 caller may not be in that zone.
How do I call a 770 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 770 and the seven-digit number. From a mobile phone you can usually just enter +1 770 followed by the number and let the phone add the exit code for you.