| Place Name | Byfield |
| Place Type | Unincorporated |
| ZIP Code(s) | 01922 |
| County | Essex County |
| Area Code(s) | 351,978 |
| Timezone | Eastern Standard Time (EST) |
| Population () | |
| Metro/Micro Stats Area | Boston-Cambridge-Newton, MA-NH |
| US Congressional District(s) | Massachusetts 6th |
| State House Districts | 2nd Essex |
| State Senate Districts | Second Middlesex and Norfolk |