| Place Name | Gardner |
| Place Type | City |
| ZIP Code(s) | 01440 |
| County | Worcester County |
| Area Code(s) | 351,978 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 20,250 |
| Population Growth Rate (2010-19) | 5.24% |
| Majority Ethnicity | White 85.43% |
| Metro/Micro Stats Area | Worcester, MA-CT |
| US Congressional District(s) | Massachusetts 3rd |
| State House Districts | 2nd Worcester |
| State Senate Districts | Worcester and Middlesex |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 85.43% |
| African American | 2.5% |
| Hispanic | 0.04% |
| Asian | 3.07% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 8.96% |