| Place Name | Jefferson |
| Place Type | Unincorporated |
| ZIP Code(s) | 01522 |
| County | Worcester County |
| Area Code(s) | 508,774 |
| Timezone | Eastern Standard Time (EST) |
| Population () | |
| Metro/Micro Stats Area | Worcester, MA-CT |
| US Congressional District(s) | Massachusetts 2nd |
| State House Districts | 1st Worcester |
| State Senate Districts | Third Essex |