| Sub-districts |
|---|
| Ambalappuzha, Alappuzha |
| Chengannur, Alappuzha |
| Cherthala, Alappuzha |
| Karthikappally, Alappuzha |
| Kuttanad, Alappuzha |
| Mavelikkara, Alappuzha |
| All postal codes in Kerala |
|---|
| Alappuzha |
| Ernakulam |
| Idukki |
| Kannur |
| Kasaragod |
| Kollam |
| Kottayam |
| Kozhikode |
| Malappuram |
| Palakkad |
| Pathanamthitta |
| Thiruvananthapuram |
| Thrissur |
| Wayanad |