| Place Name | Fitchburg |
| Place Type | City |
| ZIP Code(s) | 01420 |
| County | Worcester County |
| Area Code(s) | 351,978 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 40,314 |
| Population Growth Rate (2010-19) | 4.04% |
| Majority Ethnicity | White 65.72% |
| Metro/Micro Stats Area | Worcester, MA-CT |
| US Congressional District(s) | Massachusetts 3rd |
| State House Districts | 3rd Worcester |
| State Senate Districts | Worcester and Middlesex |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 65.72% |
| African American | 5.8% |
| Hispanic | 0.24% |
| Asian | 1.32% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 26.91% |