| Post office | Kamarajnagar B.O |
| Pin code | 600057 |
| Office type | B.O |
| Taluk / city | Ponneri |
| District name | Tiruvallur |
| State name | Tamil Nadu |
| Delivery status | Non-Delivery |
| Division name | Tambaram |
| Region name | Chennai Region |
| Circle name | Tamilnadu |
| Related sub office | Ennore RS S.O |
| Related head office | Ambattur H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 600057 | Ennore RS S.O | Ambattur | Tiruvallur | Tamil Nadu |
| 600057 | Ernavur S.O | NA | Tiruvallur | Tamil Nadu |
| 600057 | Ennore Thermal Station S.O | Ponneri | Tiruvallur | Tamil Nadu |
| 600057 | Kamarajnagar B.O | Ponneri | Tiruvallur | Tamil Nadu |