| | Aarau | Aarau | | | Aargau CH033 | Schweiz/Suisse/Svizzera CH Switzerland |
| | Aarburg | Aarburg | | | Aargau CH033 | Schweiz/Suisse/Svizzera CH Switzerland |
| | Abtwil | Abtwil | | Zug: functional urban
area | Aargau CH033 | Schweiz/Suisse/Svizzera CH Switzerland |
| | Ammerswil | Ammerswil | | Zurich: functional urban
area | Aargau CH033 | Schweiz/Suisse/Svizzera CH Switzerland |
| | Aristau | Aristau | | Zurich: functional urban
area | Aargau CH033 | Schweiz/Suisse/Svizzera CH Switzerland |
| | Arni (AG) | Arni (AG) | | Zurich: functional urban
area | Aargau CH033 | Schweiz/Suisse/Svizzera CH Switzerland |
| | Auenstein | Auenstein | | | Aargau CH033 | Schweiz/Suisse/Svizzera CH Switzerland |
| | Auw | Auw | | Zug: functional urban
area | Aargau CH033 | Schweiz/Suisse/Svizzera CH Switzerland |
| | Bad Zurzach | Bad Zurzach | | | Aargau CH033 | Schweiz/Suisse/Svizzera CH Switzerland |
| | Baden | Baden | | Zurich: functional urban
area | Aargau CH033 | Schweiz/Suisse/Svizzera CH Switzerland |