| Post office | Kattupakkam B.O |
| Pin code | 600056 |
| Office type | B.O |
| Taluk / city | Poonamallee |
| District name | Tiruvallur |
| State name | Tamil Nadu |
| Delivery status | Non-Delivery |
| Division name | Tambaram |
| Region name | Chennai Region |
| Circle name | Tamilnadu |
| Related sub office | Poonamallee S.O |
| Related head office | Avadi Camp H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 600056 | Iyyappanthangal S.O | Sriperumbudur | Kanchipuram | Tamil Nadu |
| 600056 | Poonamallee S.O | Poonamalee | Tiruvallur | Tamil Nadu |
| 600056 | Kattupakkam B.O | Poonamallee | Tiruvallur | Tamil Nadu |
| 600056 | Poonamallee East S.O | Poonamallee | Tiruvallur | Tamil Nadu |
| 600056 | Senneerkuppam B.O | Poonamallee | Tiruvallur | Tamil Nadu |