Marietta, Georgia
770 Area Code
Establish trusted local presence in Atlanta suburbs with a 770 area code number. Perfect for businesses targeting customers in Marietta, Roswell, Alpharetta and surrounding Cobb, Gwinnett and Fulton county communities.
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About 770 Area Code
Area code 770 serves Atlanta suburbs and northern Georgia communities outside Interstate 285, known locally as the Perimeter. Introduced on August 1, 1995 after a split from the original 404 numbering plan, 770 covers major suburban centers including Marietta, Roswell, Alpharetta and Smyrna, extending across 29 counties including Cobb, Gwinnett, Fulton and Cherokee. The code supports local voice and SMS-capable numbers used by businesses, healthcare providers, technology companies and service organizations across both high-growth suburban areas and established communities.
The 770 region combines corporate headquarters in Alpharetta, aerospace and advanced manufacturing in Marietta (Lockheed Martin operations), financial services clusters, and thriving tech startup ecosystems. Local businesses use 770 numbers for appointment scheduling, customer service lines, sales inquiries, delivery coordination and support operations. Geographic numbers drive higher answer rates than toll-free alternatives because they signal genuine local operations and community ties, which matters in competitive suburban markets.
FoneSwift displays live 770 inventory and capabilities on this page. Filter available numbers by Voice, SMS and MMS support before purchasing. Area code availability changes daily as numbers are assigned and released. If a 770 number is temporarily unavailable, overlay codes 678, 470 or 943 serve identical geographic coverage and provide the same local presence benefits for Atlanta suburban audiences.
If your business serves Atlanta suburbs, display phone numbers in both standard and international formats (e.g., (770) 555-1234 and +1 770 555 1234) across your website and marketing materials. Register A2P messaging campaigns if you send business SMS to ensure carrier compliance and maintain deliverability. For number porting, consult our porting guide. Many established businesses port existing numbers to preserve years of customer recognition and avoid losing contacts who have saved the number.
| Country | United States |
| State | Georgia |
| Area code | 770 |
| Primary cities | Marietta, Roswell, Alpharetta, Smyrna |
| Counties served | Barrow, Bartow, Butts, Carroll, Cherokee, Clayton, Cobb, Coweta, DeKalb, Douglas, Fayette, Forsyth, Fulton, Gwinnett, Hall, Haralson, Heard, Henry, Lamar, Meriwether, Newton, Oconee, Paulding, Pike, Polk, Rockdale, Spalding, Walton, Jasper, Pickens |
| Timezone | America/New York (EST) |
| Created | August 1, 1995 |
| International Format | +1 770 XXX XXXX |
| Local Format | (770) XXX-XXXX |
10-digit dialing is required for all calls within the 770/678/470/943 overlay region, even for local calls. Register A2P messaging campaigns for business SMS to maintain compliance with carrier requirements and ensure high deliverability rates.
Area code 770 uses Eastern Standard Time (EST, UTC-5) and observes Daylight Saving Time, shifting to Eastern Daylight Time (EDT, UTC-4) from March to November. Most businesses operate Monday through Friday, 9 AM to 5 PM EST/EDT.
Local numbers generate higher answer rates and trust compared to toll-free numbers in suburban markets. If 770 inventory is limited, overlay codes 678, 470 or 943 provide identical geographic coverage. For downtown Atlanta presence, consider 404 for areas inside the Perimeter.
Quick Facts about 770 Area Code
Interesting tidbits about this area code 770
Split from 404
Area code 770 was created in 1995 when Atlanta suburbs were separated from the original 404 code, with the boundary roughly following Interstate 285, locally known as the Perimeter.
First 10-digit dialing
Atlanta became the first U.S. city to require 10-digit dialing throughout its metro area when 770 was introduced, coinciding with preparations for the 1996 Summer Olympics.
Corporate headquarters hub
Alpharetta in the 770 region hosts over 600 technology companies and is nicknamed 'Technology City of the South', driving substantial business telephony demand.
Three overlay codes
The 770 region is overlaid by area codes 678 (added 1998), 470 (added 2010) and 943 (added 2022), all serving identical geographic areas to meet growing demand.
Aerospace heritage
Marietta hosts major Lockheed Martin aerospace manufacturing facilities, making the 770 area a key center for defense and aviation industry communications.
Largest local calling area
The metro Atlanta region (404, 770, 678, 470, 943) forms one of the largest toll-free local calling areas in the United States, with no long-distance charges for calls within the metro.
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How Does Local 770 Phone Numbers Work?
A local business number is a structured telephone identifier that tells networks where to route calls and messages. When you use a 770 number in Marietta and Georgia, the digits signal the international gateway, the geographic region, the local exchange and the specific subscriber, so calls reach the right destination quickly and reliably.
The typical parts of a United States local number are:
- Country code (+1): identifies United States for international routing.
- Area code (770): directs the call to the Marietta / Georgia region.
- Central office / exchange (eg. 555): narrows the call to a local switching area or rate center.
- Subscriber number (eg. 1234): the unique line assigned to a person, extension, or device.
Example formats:
| International Format (E.164) | +1 770 555 1234 |
| Local Format (National) | (770) 555-1234 |
Quick Dialing Guide
The correct formats to reach 770 numbers locally and globally.
From Landlines
Standard United States FormatUse for domestic long-distance calls within United States.
From Mobile
E.164 InternationalThe universal format. Works on any mobile device, anywhere.
International
From abroadDialing from outside United States (exit code 00 varies by country).
With FoneSwift, your 770 number can be instantly configured through our intuitive dashboard. Connect it to call forwarding rules, AI voice agents, IVR menus, or route calls directly to any device. Enable voice, SMS, and MMS capabilities right from your account, no technical setup required. Your number becomes active immediately after purchase, and you can update routing, business hours, and integrations anytime.
For businesses, local numbers offer clear benefits: higher answer rates, stronger local recognition, and better performance for local campaigns and customer trust. Typical business features include call forwarding, call recording, auto-attendants, voicemail-to-email, and multi-device ringing.
Important operational notes:
- SMS & A2P: If you plan to send application-to-person messages from a 770 number, register your traffic where required and follow carrier rules (10DLC/A2P) to avoid deliverability or throughput issues.
- Number Porting: Bring your existing 770number to FoneSwift seamlessly. Our team handles the entire porting process, simply submit your number details and we'll coordinate with your current provider. Porting typically completes within 5-10 business days, and you'll receive updates at each step. There's no service interruption during the transfer.
- Display & formatting: Always publish numbers in both local and E.164 formats so international and mobile users can easily dial.
Ready to get started? Browse available 770 numbers in the phone numbers section above, you'll see real-time availability and can filter by features like voice, SMS, and MMS. Once you find your perfect number, purchase it in seconds and start making calls immediately. Our team is here to help you choose the right setup for your business needs, whether you're setting up AI receptionists, call forwarding, or SMS campaigns. Start your 14-day free trial today, no credit card required.
How to Get a 770 Phone Number
Buying a local 770 phone number using FoneSwift is easy and takes just a few minutes. Follow these simple steps to get your local 770 phone number and start connecting with customers in United States today.
Create a new account on FoneSwift or sign in to your existing account to get started.
Once logged in, you'll be taken to your FoneSwift dashboard where you can manage all your phone numbers and settings.
Click on Settings in the sidebar, then go to "My Numbers" and click the "Add a Number" button.
Choose United States as your country from the dropdown menu.
Select Local as the type of number, then choose the 770 area code from the available options.
Click the "Search" button to see all available phone numbers with the selected area code.
Browse through the available numbers, select one that fits your needs, click "Buy Number", and confirm your purchase.
Your number is now active! Start making and receiving calls from the FoneSwift Dialer immediately.
You can configure your number to handle calls, forward calls, or even create an AI voice agent to handle the calls for you.
Businesses Using 770 Phone Numbers
Atlanta suburbs host technology companies, healthcare providers, professional services and home service businesses. Local phone numbers support customer engagement and strengthen regional business credibility.
Technology & software companies
Software developers, SaaS companies, IT services and tech startups in Alpharetta and Roswell use local numbers for customer support lines, sales inquiries, technical support and partnership communications.
Healthcare & medical practices
Hospitals, medical practices, dental offices and telehealth providers rely on local numbers for patient appointment scheduling, prescription reminders, test results and care coordination across multiple locations.
Professional services firms
Accounting firms, law offices, consulting practices and financial advisors use local numbers for client intake, appointment booking, project coordination and establishing credibility with suburban business clients.
Home services & contractors
HVAC companies, plumbers, electricians, landscaping services and general contractors use local numbers for service requests, emergency calls, estimate scheduling and follow-up communications with homeowners.
Retail & e-commerce businesses
Local retailers, online sellers, specialty shops and franchise operations use local numbers for order inquiries, customer service, pickup coordination and building trust with suburban customer bases.
Real estate & property management
Real estate agents, property management companies and commercial brokers serving Atlanta suburbs use local numbers for listing inquiries, property showings, tenant communications and establishing neighborhood expertise.
Why Choose 770 Local Phone Number for Your Business?
Discover the advantages of having a local phone number that builds trust, increases engagement, and drives results.
Powerful Features for Your 770 Local Phone Number
Get the most out of your localphone number with FoneSwift's enterprise-grade features designed to help your business communicate more effectively.
Nearby Area Codes
Explore other area codes in the same region to expand your local presence.
Frequently Asked Questions
What areas does the 770 area code cover?
When was the 770 area code created?
Can I send text messages from a 770 number?
Do I need to dial 10 digits for local calls in the 770 area?
What is the difference between 770, 678, 470 and 943 area codes?
How do I get a 770 local phone number?
Can I keep my existing 770 number if I switch to FoneSwift?
Where can I find official information about the 770 area code?
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