top of page


area code

Biggest city:





Eastern (GMT -5)

Nearby area codes: 

Zip codes



Major Cities:

Lowell, Lawrence, Haverhill, Methuen, Billerica.


Average Income:





Unemployment Rate:

Area code 978 is a significant part of the telephone numbering plan in the United States, specifically in the state of Massachusetts. Geographical Coverage: Area code 978 serves the northeastern region of Massachusetts, including cities and towns like Lowell, Lawrence, and Gloucester. It also covers parts of central Massachusetts. This area is known for its mix of suburban communities, historic towns, and rural landscapes. Establishment and History: The 978 area code was created in 1997 as a split from the 508 area code. This split was necessary to accommodate the growing demand for telephone numbers in the region, driven by the increase in population and the proliferation of cell phones and internet connections. Overlay with Area Code 351: In 2001, an overlay area code, 351, was introduced to the same geographic region as 978. This means that both 978 and 351 area codes are used interchangeably in the region. The introduction of an overlay area code was done to provide additional numbering resources to meet the growing demand for telephone numbers in the area. In conclusion, area code 978 represents a vital telecommunication zone in Massachusetts, particularly in the northeastern and central parts of the state. Its establishment and the subsequent introduction of an overlay code reflect the evolving telecommunications needs and the growth of this diverse and historic region.
bottom of page