The 351 area code serves parts of eastern and central Massachusetts and helps meet the region’s growing demand for telephone numbers. Telecommunications authorities introduced it as an overlay to the existing 978 area code, allowing residents and businesses to obtain new numbers without changing existing ones. If you receive a call from a number that begins with 351, the caller is likely in Massachusetts, especially in communities north and west of Boston.
What Is the 351 Area Code?
Area code 351 is located in northeastern Massachusetts and covers major cities including Lowell, Lawrence, Haverhill, and Peabody. It functions as an overlay for area code 978, meaning both codes serve the same geographic region. For anyone receiving a call from a number or looking to get a local Massachusetts phone number, understanding this area code is key to knowing exactly where it originates and who uses it.
Where Is the Area Code Located?
The area code 351 location serves a large portion of Massachusetts in the northeastern United States, providing telephone service to numerous residential and business customers throughout the region. In addition, it functions as an overlay to the 978 area code, allowing both area codes to serve the same geographic area. Furthermore, the area code covers suburban communities, historic towns, technology hubs, and thriving commercial districts. As a result, residents and businesses across these locations may use either a 351 or 978 phone number, depending on when their number was assigned.
Major cities covered
Some of the largest cities and towns covered by the 351 area code location include:
These communities form part of the greater Boston metropolitan region and contribute significantly to the state’s economy.
History of the Area Code
The 351 area code usa officially entered service in 2001 to meet the growing demand for telephone numbers in Massachusetts. Previously, the region relied exclusively on the 978 area code, which had been established in 1997 after splitting from the 508 area code. Over time, population growth and the increasing use of cell phones, fax machines, and internet-connected devices significantly reduced the supply of available phone numbers. Consequently, telecommunications regulators introduced the area code as an overlay to ensure a steady supply of new numbers without forcing existing customers to change their current phone numbers. Today, this overlay system continues to operate successfully, allowing both the 351 and 978 area codes to serve the same geographic region.

Demographics of the Area Code Region
The estimated total population across all ZIP codes in the area code 351 spam is 161,220. The median age is approximately 34.91 years, and the median household income is $77,650, with 57.28% of families having two income earners and 35.17% of households earning at least $100,000 annually.
Time Zone
The 351 area code falls within the Eastern Time Zone, designated as UTC-5 during Standard Time and UTC-4 during Daylight Saving Time. The Eastern Time Zone is known for its distinct four seasons, with cold winters and warm summers, and is home to bustling cities, picturesque landscapes, and a rich cultural heritage. Anyone scheduling calls or meetings with contacts in the area code should plan according to Eastern Time.
How to Dial a Area Code Number
You can call a phone number from anywhere in the United States by dialing 1-351-XXX-XXXX. If you are calling from another country, first dial your country’s exit code and then enter +1-351-XXX-XXXX. The area code works as an overlay to the 978 area code, so everyone in the region must use 10-digit dialing for all calls. This means you need to dial the area code and the phone number, even when making a local call.
Is the Area Code Associated With Scams?
Like many areas codes across the United States, the area code can be spoofed by robocallers and scammers trying to appear as local Massachusetts callers. While it is not a toll-free number, long-distance call charges may vary by location or service provider. Always ensure to acquire such numbers from legitimate service providers to avoid potential scams.
The Area Code and Business Use
The area code carries strong commercial value, particularly for businesses wanting a local Massachusetts identity. A phone number with area code is an essential communication tool for businesses and residents in Massachusetts, whether you’re making a reservation, scheduling a service appointment, or simply staying in touch with friends and family.
Frequently Asked Questions (FAQs)
Conclusion
The 351 area code is an important phone area code in eastern and central Massachusetts. It serves cities such as Lowell, Lawrence, Fitchburg, and Haverhill and connects people, businesses, and organizations across the region. The area has a diverse population, a strong economy, and a growing technology industry. Whether you receive a call from a number, plan to move to the area, or want a local business phone number, learning about the area code can help you better understand and connect with this important part of Massachusetts.
