| Station | Location | Railroad |
|---|---|---|
| Concord | Concord, Massachusetts | Boston and Maine Corporation Boston and Maine Railroad Fitchburg Railroad Company Massachusetts Bay Transportation Authority |
| Concord | Concord, Massachusetts | Boston and Maine Railroad |
| Concord Junction | Concord, Massachusetts | Boston and Maine Railroad The Concord & Montreal Railroad Concord Railroad Corporation Fitchburg Railroad Company The New York, New Haven and Hartford Railroad Company Old Colony Railroad Company |
| Middlesex Junction | Concord, Massachusetts | The Concord & Montreal Railroad Concord Railroad Corporation Old Colony Railroad Company |
| Reformatory | Concord, Massachusetts | Boston and Maine Railroad |
| Reformatory Station | Concord, Massachusetts | Boston and Maine Railroad |
| West Concord | Concord, Massachusetts | Boston and Maine Corporation Boston and Maine Railroad Massachusetts Bay Transportation Authority The New York, New Haven and Hartford Railroad Company |