- Abbotts
- Abeel Island
- Abell Corners
- Abenaki Mobile Home Park
- Accord
- Acidalia
- Acra
- Adams
- Adams Basin
- Adams Center
- Adams Corner
- Adams Corners
- Adams Cove
- Adams Crossing Mobile Home Park
- Adams Island
- Adamsville
- Addison
- Aden
- Adirondack
- Adirondack Estates
- Adrian
- Afton
- Agnes Corners
- Agnes Island
- Aiden Lair
- Air City
- Airmont
- Airways Mobile Home Park
- Akins Corners
- Akron