| Place | Post Code |
|---|---|
| Arzo, Mendrisio | 6864 |
| Besazio, Mendrisio | 6863 |
| Boscherina, Mendrisio | 6852 |
| Capolago, Mendrisio | 6825 |
| Genestrerio, Mendrisio | 6852 |
| Ligornetto, Mendrisio | 6853 |
| Mendrisio, Mendrisio | 6850 |
| Mendrisio Borgo, Mendrisio | 6850 |
| Mendrisio Stazione, Mendrisio | 6850 |
| Meride, Mendrisio | 6866 |
| Monte Generoso Bellavista, Mendrisio | 6872 |
| Monte Generoso Vetta, Mendrisio | 6825 |
| Rancate, Mendrisio | 6862 |
| Salorino, Mendrisio | 6872 |
| Somazzo, Mendrisio | 6872 |
| Tremona, Mendrisio | 6865 |