| All Massachusetts area codes |
|
| Location | |
|---|---|
Location of area code 978/351 |
|
| Statistics | |
| Created | 1997 |
| LATA Code | 128 |
| Overlays | Area code 351 |
| Major Cities | Haverhill Lawrence Lowell Peabody Leominster |
| Regions | North Central Massachusetts Northeastern Massachusetts |
| Time zone | Eastern (UTC-5) |
| Summer (DST) | Eastern (UTC-4) |
Area code 978 was created as a split from area code 508 on September 1, 1997 and covers northcentral & most of northeastern Massachusetts. Use of 978 became mandatory February 1, 1998. 351 has been sharing the service area since May 2, 2001.
| Massachusetts area codes: 339, 351, 413, 508, 617, 774, 781, 857, 978 | ||
|---|---|---|
| North: 603 | ||
| West: 413 | 351/978 | East: 781/339, Atlantic Ocean |
| South: 508/774, 781/339 | ||
| New Hampshire area codes: 603 | ||