Massachusetts area codes
- Area codes in
- 9
- State
- Massachusetts
- Massachusetts is served by 9 area codes, from 413 in 1947 to 857 in 2001. 4 of them are overlays, added as older codes filled up.
- Updated 8 October 2026
Now in Massachusetts
Eastern Time · UTC−5, UTC−4 in summer
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Eastern Time
Typical business hours, 9 to 5 Monday to Friday.
Typical business hours, 9 to 5 Monday to Friday, shown as the blue arc. A guide to when a real Massachusetts office is likely to answer. It says nothing about who called you.
01
All area codes in Massachusetts
Massachusetts is served by 9 area codes. 413 is the oldest, in service since 1947; 857 is the newest, activated in 2001.
02
Massachusetts area codes by city
These are the Massachusetts cities served by more than one area code, or whose code also covers a wider area.
03
Overlay codes and dialling rules in Massachusetts
4 of Massachusetts’s 9 area codes are overlays — a second code laid over an existing footprint instead of splitting it. Wherever an overlay operates, local calls require the full ten-digit number.
04
Spam call reports in Massachusetts
These Massachusetts area codes drew the most reports to the FTC in the 30 days to 8 October 2026. The figures describe numbers displaying each code, which caller ID spoofing can fake.
Most reported Massachusetts area codes · last 30 days
| # | Code | Primary city | Reports (30 days) |
|---|---|---|---|
| 1 | 774 | Worcester | 953 |
| 2 | 413 | Springfield | 798 |
| 3 | 857 | Boston | 565 |
| 4 | 781 | Waltham | 416 |
| 5 | 978 | Lowell | 396 |
| 6 | 617 | Boston | 333 |
| 7 | 508 | Worcester | 330 |
| 8 | 351 | Lowell | 197 |
A number listed here may itself be a spoofing victim rather than the caller. These are unverified consumer reports.
Source: FTC Do Not Call Reported Calls Data, unverified consumer reports, retrieved 8 October 2026. Request a correction. Month-over-month figures appear once two complete 30-day windows exist.
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05
Questions
How many area codes does Massachusetts have?
Massachusetts has 9 area codes: 339, 351, 413, 508, 617, 774, 781, 857, 978.
What is the main area code for Boston?
The main area code for Boston is 617.
Which Massachusetts area code is oldest?
Area code 413 is the oldest in Massachusetts, in service since 1947.
Do I need to dial ten digits in Massachusetts?
Yes, wherever an overlay operates. 4 of Massachusetts’s area codes are overlays, and local calls within an overlay area require the full ten-digit number.
Which Massachusetts area code gets the most spam calls?
Area code 774 (Worcester) drew the most reports of any Massachusetts code in the 30 days to 8 October 2026, with 953 numbers reported.
Neighbouring states
Largest cities