Sent TeamMar 8, 2026 / area code / Article
Everything You Need to Know About Area Code 978 in Massachusetts
Explore Massachusetts area codes 978 & 351: an overlay serving northeastern MA. Understand mandatory 10-digit dialing. Created in '97/'01, covering Lowell, Lawrence, Haverhill. Includes history, NANPA/DTC regulatory details, & supported telecom services like VoIP (830 CMR 64H.1.6). Learn geographic coverage.
Frequently Asked Questions
What cities are covered by area code 978 in Massachusetts?
Why is 10-digit dialing required for area code 978?
When was area code 978 created in Massachusetts?
What area code is overlaid with 978 in Massachusetts?
How do I dial a long-distance number to area code 978?
What services are supported by area codes 978 and 351?
What is the history of area code 351 in Massachusetts?
What is the regulatory body for area code 978?
Where can I find more information about area code 978 regulations?
How to dial local numbers within area code 978?
Are there any exceptions to the area code split in Massachusetts?