| Place Name | Millwood |
| Place Type | Census Designated Place |
| ZIP Code(s) | 15627 |
| County | Westmoreland County |
| Area Code(s) | 724,878 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 520 |
| Population Growth Rate (2010-19) | -14.66% |
| Majority Ethnicity | White 85.94% |
| Metro/Micro Stats Area | Pittsburgh, PA |
| US Congressional District(s) | Pennsylvania 12th |
| State House Districts | 55 |
| State Senate Districts | 39 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 85.94% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 1.78% |
| Native American | 1.19% |
| Hawaiin/Pacific Islander | 11.09% |