| Sub-districts |
|---|
| Karunagappally, Kollam |
| Kollam, Kollam |
| Kottarakkara, Kollam |
| Kunnathur, Kollam |
| Pathanapuram, Kollam |
| All postal codes in Kerala |
|---|
| Alappuzha |
| Ernakulam |
| Idukki |
| Kannur |
| Kasaragod |
| Kollam |
| Kottayam |
| Kozhikode |
| Malappuram |
| Palakkad |
| Pathanamthitta |
| Thiruvananthapuram |
| Thrissur |
| Wayanad |