- Allston
- Allston/Brighton
- Alms House
- Amesbury
- Amherst
- Amherst Center
- Amostown
- Amrita
- Amrita Island
- Andover
- Angelica Rock
- Annisquam
- Antassawamock
- Anuxanon Island
- Apple Island
- Apponagansett
- Archer Rock
- Arlington
- Arlington Heights
- Arnoldville
- Asbury Grove
- Ashburnham
- Ashby
- Ashcroft
- Ashdod
- Ashfield
- Ashland
- Ashley Falls
- Ashley Heights
- Ashleyville