| Place Name | Winchendon |
| Place Type | Census Designated Place |
| ZIP Code(s) | 01475 |
| County | Worcester County |
| Area Code(s) | 351,978 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 3,778 |
| Population Growth Rate (2010-19) | -1.26% |
| Majority Ethnicity | White 87.78% |
| Metro/Micro Stats Area | Worcester, MA-CT |
| US Congressional District(s) | Massachusetts 3rd |
| State House Districts | 2nd Worcester |
| State Senate Districts | Worcester, Hampden, Hampshire and Middlesex |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 87.78% |
| African American | 0.59% |
| Hispanic | 0% |
| Asian | 7.11% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.52% |