| District of Massachusetts area codes: 978 | |
|---|---|
| Country | United States |
| State/Province | Massachusetts |
| Major City | Boston |
| Time Zone | Eastern |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 978-369 | Middlesex | Concord, MA | Verizon New England Inc. |
| 978-370 | Middlesex | N Reading, MA | Verizon New England Inc. |
| 978-371 | Middlesex | Concord, MA | Verizon New England Inc. |
| 978-372 | Essex | Haverhill, MA | Verizon New England Inc. |
| 978-373 | Essex | Haverhill, MA | Verizon New England Inc. |
| 978-374 | Essex | Haverhill, MA | Verizon New England Inc. |
| 978-375 | Middlesex | Lowell, MA | Sprint Spectrum L.p. |
| 978-376 | Essex | Lawrence, MA | New Cingular Wireless PCS - DC |
| 978-377 | Essex | Haverhill, MA | Mcimetro Access Transmission Services LLC |
| 978-378 | Essex | Amesbury, MA | Global Crossing Local Services-ma |
| 978-379 | Essex | Lawrence, MA | Allegiance Telecom |
| 978-380 | Essex | Ipswich, MA | Paetec Communications |
| 978-381 | Essex | Gloucester, MA | Level 3 Communications |
| 978-382 | Essex | Lawrence, MA | Cellco Partnership DBA Verizon Wireless |
| 978-383 | Middlesex | Townsend, MA | Xo Massachusetts |
| 978-384 | Essex | Merrimac, MA | Teleport Communications America |
| 978-385 | Worcester | Harvard, MA | Norfolk County Internet |
| 978-386 | Middlesex | Ashby, MA | Verizon New England Inc. |
| 978-387 | Essex | Lawrence, MA | New Cingular Wireless PCS - DC |
| 978-388 | Essex | Amesbury, MA | Verizon New England Inc. |
There are 743 prefixes, In the code area, the major cities are Beverly, MA;Chelmsford, MA;Danvers, MA;Fitchburg, . The major city is Boston.