| Station | Location | Railroad |
|---|---|---|
| A | ||
| Acton | Acton | Concord Railroad Corporation |
| Acton | Acton | Old Colony Railroad Company |
| Acton | Acton | The Concord & Montreal Railroad |
| Acton | Acton | The New York, New Haven and Hartford Railroad Company |
| Acton | Acton | Boston and Maine Railroad |
| To the Top | ||
| N | ||
| North Acton | Acton | Concord Railroad Corporation |
| North Acton | Acton | The Concord & Montreal Railroad |
| North Acton | Acton | Boston and Maine Railroad |
| North Acton Junction | Acton | Old Colony Railroad Company |
| To the Top | ||
| S | ||
| South Acton | Acton | Boston and Maine Railroad |
| South Acton | Acton | Massachusetts Bay Transportation Authority |
| South Acton | Acton | Boston and Maine Corporation |
| South Acton | Acton | Fitchburg Railroad Company |
| To the Top | ||
| W | ||
| West Acton | Acton | Boston and Maine Railroad |
| West Acton | Acton | Boston and Maine Corporation |
| West Acton | Acton | Fitchburg Railroad Company |
| Westford (North Acton) | Acton | The New York, New Haven and Hartford Railroad Company |