| Place Name | Millis |
| Place Type | Town |
| ZIP Code(s) | 02054 |
| County | Norfolk County |
| Area Code(s) | 508,774 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 8,481 |
| Majority Ethnicity | White 93.19% |
| Metro/Micro Stats Area | Boston-Cambridge-Newton, MA-NH |
| US Congressional District(s) | Massachusetts 4th |
| State House Districts | 5th Middlesex,9th Norfolk |
| State Senate Districts | Norfolk, Bristol and Middlesex |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.19% |
| African American | 1.78% |
| Hispanic | 0% |
| Asian | 3.26% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.77% |