| Place Name | Waltham |
| Place Type | City |
| ZIP Code(s) | 02451 02452 02453 |
| County | Middlesex County |
| Area Code(s) | 339,781 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 60,836 |
| Population Growth Rate (2010-19) | 7.56% |
| Majority Ethnicity | White 66.78% |
| Metro/Micro Stats Area | Boston-Cambridge-Newton, MA-NH |
| US Congressional District(s) | Massachusetts 5th |
| State House Districts | 9th Middlesex,10th Middlesex |
| State Senate Districts | Third Middlesex |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 66.78% |
| African American | 6.57% |
| Hispanic | 0.58% |
| Asian | 11.84% |
| Native American | 0.08% |
| Hawaiin/Pacific Islander | 14.15% |