Area codes in Lowell, Massachusetts
Lowell, Massachusetts uses 2 area codes — 978 and 351. The main Lowell area code is 978.
Area codes serving Lowell
Phone numbers in Lowell are written as ten digits — for example (978) 555-0190 — and fall in the Eastern Time zone.
How Lowell came to have 2 area codes
The original Lowell area code is 978, in service since 1997. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 351 (2001). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Lowell now uses all 2 codes and every local call is dialed with ten digits.
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Nearby cities
- Lexington area codes
- Winchester area codes
- Cambridge area codes
- Boston area codes
- Manchester area codes
- Quincy area codes
- Worcester area codes
- Brockton area codes
Frequently asked questions
What is the area code for Lowell?
The main area code for Lowell, Massachusetts is 978. Lowell is now served by 2 area codes in total: 978, 351.
How many area codes does Lowell have?
Lowell has 2 area codes: 978, 351.
Why does Lowell have more than one area code?
As Lowell used up the numbers available in its original area code (978, in service since 1997), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Lowell number?
Dial all 10 digits — the area code (978 or 351) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.