Area codes 978 and 351 - wikipedia Area codes 978 and 351 Map showing the region covered by area codes 978 and 351 Map of current Massachusetts area codes ( since May 2001 ) Area code 978 was created as a split from area code 508 on September 1, 1997 and covers north central and most of northeastern Massachusetts ( LATA code 128 ). Use of 978 became mandatory on February 1, 1998. Prior to when this area was served by 508 ( July 1988 ), it was served only by the 617 area code, along with the rest of the eastern two - thirds of the state. 351 has been sharing the service area since May 2, 2001. Since then, 10 digit local dialing is mandatory. Some mobile phone numbers from the 1990s assigned to rate centers in 978 and 351 kept the 508 area code just on those mobile lines after it was split. Contents 1 Cities / towns 2 Regions 3 See also 4 References 5 External links Cities / towns Acton Ashburnham Ashby Andover Amesbury Beverly Billerica Boxborough Burlington Carlisle Chelmsford Concord Danvers Dracut Fitchburg Gardner Georgetown Gloucester Groton Haverhill Lawrence Leominster Littleton Lowell Maynard Methuen Newburyport North Reading Peabody Salem Tewksbury Tyngsboro Westford Westminster Wilmington Winchendon Regions North Central Massachusetts Northeastern Massachusetts See also List of area codes in Massachusetts References External links NANPA Area Code Map of Massachusetts List of exchanges from AreaCodeDownload.com, 978 Area Code List of exchanges from AreaCodeDownload.com, 351 Area Code Massachusetts area codes : 339 / 781, 351 / 978, 413, 508 / 774, 617 / 857 North : 603 West : 413 351 / 978 East : 781 / 339, Atlantic Ocean South : 508 / 774, 781 / 339 New Hampshire area codes : 603 Retrieved from `` https://en.wikipedia.org/w/index.php?title=Area_codes_978_and_351&oldid=866239551 '' Categories : Telecommunications - related introductions in 1997 Telecommunications - related introductions in 2001 Area codes in Massachusetts Area codes in the United States Talk Contents About Wikipedia Français Edit links This page was last edited on 29 October 2018, at 04 : 13 ( UTC ). Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: where is area code 978 located in usa
Answer: north central and most of northeastern Massachusetts