| General Information about Area Code 978 | |
|---|---|
| Country | United States |
| State / Province / Territory | Massachusetts |
| Major City | Lowell |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 978-478 | Haverhill | Essex | Landline |
| 978-626 | South Hamilton | Essex | Landline |
| 978-357 | North Reading | Middlesex | Landline |
| 978-273 | Lawrence | Essex | Wireless |
| 978-341 | Concord | Middlesex | Landline |
| 978-717 | Boston | Suffolk | Landline |
| 978-250 | Lowell | Middlesex | Landline |
| 978-557 | Lawrence | Essex | Landline |
| 978-206 | Acton | Middlesex | Landline |
| 978-591 | Concord | Middlesex | Wireless |
| 978-312 | Ipswich | Essex | Landline |
| 978-580 | Concord | Middlesex | Wireless |
| 978-903 | Rowley | Essex | Landline |
| 978-253 | Boston | Suffolk | Landline |
| 978-671 | North Billerica | Middlesex | Landline |
| 978-518 | Newbury | Essex | Landline |
| 978-823 | Sudbury | Middlesex | Landline |
| 978-741 | Salem | Essex | Landline |
| 978-401 | Leominster | Worcester | Landline |
| 978-715 | North Billerica | Middlesex | Landline |