| Place Name | Mill River |
| Place Type | Unincorporated |
| ZIP Code(s) | 01230 |
| County | Berkshire County |
| Area Code(s) | 413 |
| Timezone | Eastern Standard Time (EST) |
| Population () | |
| Metro/Micro Stats Area | Pittsfield, MA |
| US Congressional District(s) | Massachusetts 1st |
| State House Districts | 3rd Berkshire |
| State Senate Districts | Berkshire, Hampshire, Franklin and Hampden |