| Place Name | Mount Washington |
| Place Type | Town |
| ZIP Code(s) | 01258 |
| County | Berkshire County |
| Area Code(s) | 413 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 161 |
| Majority Ethnicity | White 99.37% |
| Metro/Micro Stats Area | Pittsfield, MA |
| US Congressional District(s) | Massachusetts 1st |
| State House Districts | 4th Berkshire |
| State Senate Districts | Berkshire, Hampshire, Franklin and Hampden |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.37% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.63% |