The area code 508 is located in Cambridge, Massachusetts.
Area code 508 does not cover Cambridge, Massachusetts. Cambridge sits in Greater Boston and primarily uses area codes 617 and 857. Area code 508 serves much of central and southeastern Massachusetts, so calls to and from Cambridge often connect with nearby 508 communities for work, school, and travel. This makes 508 a common sight on caller ID for Cambridge residents even though it’s not a Cambridge area code.
What area code 508 covers nearby:
Area code 508 was created in the late 1980s as a split from 617 and is now overlaid by 774, which means both codes serve the same region and require 10‑digit dialing. The region is in the Eastern Time Zone (ET), and many mobile and VoIP users keep their 508 numbers even if they move to places like Cambridge. You’ll often see 508 numbers tied to schools, hospitals, and businesses across central Massachusetts, the South Coast, and Cape Cod.
“10‑digit dialing is required in overlay area codes like 508/774.” — FCC (Federal Communications Commission)