What is what area code is 978?

Area code 978 serves the northeastern region of Massachusetts in the United States. This includes cities and towns north and west of Boston, such as Lowell, Lawrence, Andover, Haverhill, Salem, Gloucester, and Fitchburg. It generally covers areas that were previously served by area code 508, which was split to create 978 in 1997. You can learn more about the history of area codes in the US. It's important to check the specific area covered when making calls, especially in regions with multiple area codes. For example, to dial a number in Lowell, Massachusetts, you might need to use area code 978.