The 729 area code is a statewide overlay covering the entire state of Maine. Introduced as the newest area code in the state, it was layered directly on top of the long-standing 207 area code to supply fresh phone numbers as Maine ran short of available numbers under a single code.
Quick Summary of the 729 Area Code
| Area Code | 729 |
| State | Maine (ME) |
| Region | Statewide Maine |
| Major Cities | Portland, Lewiston, Bangor, South Portland, Auburn, Biddeford, Augusta, Sanford |
| Time Zone | Eastern Time (ET) – EST / EDT |
| Dialing Format | 10-digit dialing required |
Geographic Coverage
The 729 area code shares an identical statewide footprint with 207, covering all of Maine – Portland, South Portland, and Biddeford on the southern coast, Lewiston and Auburn in the center, the capital of Augusta, Bangor in the east, and Sanford in the southwest. Because it is an overlay rather than a separate region, a 729 number and a 207 number can exist on the same street anywhere in the state.
Time Zone
The 729 area code observes Eastern Time (ET). Clocks follow Eastern Standard Time (UTC−5) in winter and shift to Eastern Daylight Time (UTC−4) from mid-March through early November. All of Maine is on Eastern Time. As the easternmost state in the country, Maine is among the first places in the United States to see the sunrise each day. From the West Coast, this region is three hours ahead of Pacific Time, so a 9:00 AM call in California reaches a 729 number at 12:00 PM local time.
Tip: Business hours across the 729 region generally run 9:00 AM to 5:00 PM Eastern Time, Monday through Friday.
How to Dial a 729 Number
Because area code 729 operates as part of an overlay, 10-digit dialing is mandatory for every local and long-distance call. You must dial the full 10-digit number (729 + the seven-digit line number) even when calling a neighbor across the street. For international callers, dial your country’s exit code, then +1 (the North American country code), then 729, followed by the seven-digit local number.
Scam Alerts for the 729 Area Code
Like every U.S. area code, 729 has been used by scammers who spoof local numbers to appear trustworthy. Residents in Portland, Lewiston, Bangor, South Portland, Auburn, Biddeford, Augusta, Sanford should stay alert to the following common tactics:
| Scam Type | What to Watch For |
|---|---|
| IRS / Tax Scams | Threatening calls demanding immediate tax payment via gift cards or wire transfer. |
| Utility Shut-off | Impostors claiming to be Central Maine Power threatening to cut power in winter. |
| Tech Support Fraud | Pop-ups or calls claiming your computer is infected and asking for remote access. |
| Prize / Lottery Scam | Calls saying you won a prize but must pay a “fee” or “tax” to claim it. |
If you receive a suspicious call from a 729 number, take these steps to protect yourself:
- Do not share personal information such as Social Security numbers, bank details, or passwords over the phone.
- Hang up and verify by calling the organization back using an official number from its website.
- Report the call to the FTC at reportfraud.ftc.gov and to the Maine Attorney General’s Consumer Protection Division.
- Block the number and consider registering with the National Do Not Call Registry.
Red Flag: Legitimate agencies such as the IRS, Social Security Administration, or your local utility company (Central Maine Power or Versant Power) will never demand immediate payment by gift card, wire transfer, or cryptocurrency. Any 729 caller making such a demand is a scammer.
History and Economy of the 729 Region
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The 729 area code was introduced as a statewide overlay for the entire 207 region, making it the newest area code in Maine. For more than seventy years Maine was one of the few states served by a single area code, but the growth of mobile phones and demand for new numbers finally exhausted the 207 supply, prompting regulators to add 729 across the whole state rather than splitting it into separate regions. The regional economy is anchored by Maine’s famous lobster and seafood industry, the food and tourism scene of Portland, shipbuilding at Bath Iron Works, forestry and paper in the North Woods, agriculture in Aroostook County, and coastal tourism around Acadia National Park. Because 729 is the newer of the two codes, it appears most often on recently activated mobile numbers and new business lines.
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Looking Up a 729 Number
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To identify a 729 caller, use a reverse phone lookup or search the complete 10-digit number online. Because 729 is a newer code often used for mobile numbers, some callers may have a smaller public footprint, so never share personal or financial details with an unverified caller.
Nearby & Related Area Codes
Maine is served by two area codes, which together form a statewide overlay. If you are researching 729, these related and neighboring New England codes are worth knowing:
You can also browse our full directory of Maine area codes for more regional guides.
↑ See the complete list of All US Area Codes by State – every area code across all 50 states in one directory.
Explore Neighboring States
Researching area codes just across the state line? Start with these codes in the states that border Maine:
Frequently Asked Questions
Where is the 729 area code located?
The 729 area code is a statewide overlay covering all of Maine, so a 729 number can be based anywhere in the state – from Portland and Lewiston to Bangor and Augusta.
Why was the 729 area code created?
729 was added as a statewide overlay because Maine ran short of numbers under the original 207 code. Both codes now serve the whole state.
Do I have to dial 10 digits for 729?
Yes. As an overlay code, 729 always requires 10-digit dialing for local calls, as does 207.
What time zone is the 729 area code in?
Like 207, the 729 area code is in the Eastern Time Zone (EST/EDT), covering the whole state of Maine.
Related 729 Guides
- Worried about spam or robocalls? Browse our Scam Alerts directory.