770 Area Code
Covers Roswell and nearby communities in Georgia.
(770) 555-0142Area code 770 map
Interactive coverage map for area code 770, centered on Roswell, Georgia
34.0232, -84.3616
Open in OpenStreetMapArea code 770 coverage map — centered on Roswell. Shaded area shows the approximate reach around the primary city.
If you are trying to place Roswell, GA on the map, area code 770 is the one that covers it. It reaches roughly 864,000 people across places such as Roswell, Atlanta, Sandy Springs, Alpharetta and more. The region observes Eastern time, so a number like (770) 555-0142 is on that clock right now. On the ground it spans Fulton, Dekalb, Cobb and nearby counties. It is not currently paired with an overlay code. Local calls inside the 770 area can generally be placed with ten digits, and you do not need a leading 1 for domestic calls. Scroll on for a real-time clock, an area map, the cities and counties inside 770, its related area codes, and practical advice on 770 robocalls and caller-ID spoofing.
Cities covered by 770
Cities & neighborhoods
- Roswell
- Atlanta
- Sandy Springs
- Alpharetta
- Marietta
- Smyrna
- Dunwoody
- College Park
- Douglasville
- Duluth
- Forest Park
- Gainesville
- Griffin
- Kennesaw
- Lawrenceville
- Mableton
- Peachtree City
- Redan
- Tucker
Counties
- Fulton
- Dekalb
- Cobb
- Douglas
- Clayton
- Hall
- Spalding
- Gwinnett
- Fayette
Looking for the broader picture? See all Georgia area codes.
Nearby & overlay area codes
Overlay codes (same area)
These share 770’s geography — a number in either code can be on the same street.
770 has no overlay code right now.
Neighboring codes
Codes for adjacent regions and metros.
Is a call from 770 a scam?
Area code 770 serves Roswell and the surrounding area, so most calls are ordinary local and business traffic. As everywhere, spam and robocalls do use 770 numbers, frequently by spoofing a local-looking caller ID to boost pickup rates. The area code itself tells you nothing about who is really calling, so judge the call by what's said, not the number.
Red flags to watch for
- Pressure to act right now, or threats of arrest, fines, or service being cut off.
- Requests to pay with gift cards, wire transfer, crypto, or a payment app.
- Asking for passwords, one-time codes, your SSN, or full card/bank numbers.
- A robocall or recording, or a number that won’t let you call back.
When unsure, hang up and call the organization back on a number you look up yourself.
Calling a 770 number from abroad
Every 770 number is a US/Canada +1 number. From a mobile anywhere, the simplest approach is to dial it in international format:
+1 770 555-0142If your phone can’t dial the +, replace it with your country’s exit code, then 1, then the number:
- UK, Germany, France & most of Europe
00 1 770 555-0142 - Australia
0011 1 770 555-0142 - Japan
010 1 770 555-0142 - Mexico
00 1 770 555-0142
Within the US and Canada you don’t need any of this — just dial the ten digits 770 555-0142.
Reverse phone lookup
Check any US or Canada number to see whether it's a working line, which carrier it sits on, whether it's mobile, landline or VoIP, and roughly where it's registered.
Shows carrier, line type and location. Owner name isn't available here.
Results are for personal, informational use only and may not be used for employment, credit, housing or tenant-screening decisions.
Area code 770: frequently asked questions
Where is the 770 area code located?
The 770 area code is located in Georgia, centered on Roswell. It covers Fulton, Dekalb, Cobb, Douglas, Clayton, Hall, Spalding, Gwinnett, Fayette and nearby communities including Roswell, Atlanta, Sandy Springs, Alpharetta, Marietta, Smyrna.
What time zone is 770 in?
Area code 770 is in the Eastern time zone (UTC-5 (EST) / UTC-4 (EDT)). You can see the exact current local time for Roswell on the live clock above.
What cities use area code 770?
Cities and areas that use 770 include Roswell, Atlanta, Sandy Springs, Alpharetta, Marietta, Smyrna. Its primary city is Roswell, GA.
Do I need to dial 1 before 770?
You generally do not need to dial a leading 1 for domestic calls to 770. Ten-digit dialing (the 770 code plus the seven-digit number) is the safest habit.
Is 770 a toll-free or scam number?
No — 770 is a normal geographic area code for Roswell, not a toll-free code (toll-free codes are 800, 833, 844, 855, 866, 877 and 888). A 770 number is not inherently a scam, but the code can be spoofed. See the spam-call section above for how to tell.
What are the overlay area codes for 770?
Area code 770 does not currently have an overlay code; it is not layered on top of another code in the same area.