| Post office | Kollam H.O |
| Pin code | 691001 |
| Office type | H.O |
| Taluk / city | Kollam |
| District name | Kollam |
| State name | Kerala |
| Delivery status | Delivery |
| Division name | Quilon |
| Region name | Trivandrum HQ |
| Circle name | Kerala |
| Related sub office | NA |
| Related head office | NA |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 691001 | Kollam Bazar S.O | Kollam | Kollam | Kerala |
| 691001 | Kollam Cantonment S.O | Kollam | Kollam | Kerala |
| 691001 | Kollam H.O | Kollam | Kollam | Kerala |
| 691001 | Kollam Taluk Cutchery S.O | Kollam | Kollam | Kerala |