- Avery
- Acco Park
- Accokeek Acres
- Accokeek Lawn
- Acredale
- Adelphi Park
- Ammendale
- Andrews Manor
- Apple Grove
- Ardmore
- Ardwick
- Ardwick Park
- Arnold Heights
- Ashbox
- Auburn
- Auth Village
- Avenel
- Avondale
- Avondale Terrace
- Ayres
- Ashland Landing
- Airedele
- Ancient Oaks
- Andover Estates
- Anchorage
- Arcadia Shores
- Avalon
- Avalon Island
- Aveley
- Avonvue