Massachusetts area codes
Massachusetts has 9 area codes, all on UTC−5 standard time. Each card shows the main cities; open one for its overlays, history and a free lookup.
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Massachusetts area code questions
How many area codes does Massachusetts have?
Massachusetts has 9 area codes in service: 339, 351, 413, 508, 617, 774, 781, 857 and 978.
What was the original Massachusetts area code?
413 and 617 were among the original area codes created in 1947.
What is the newest area code in Massachusetts?
339, in service since May 2, 2001 as an overlay on 781.
What time zone is Massachusetts area codes in?
Eastern.
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Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.