| Post office | Onambakkam B.O |
| Pin code | 603313 |
| Office type | B.O |
| Taluk / city | NA |
| District name | Kanchipuram |
| State name | Tamil Nadu |
| Delivery status | Delivery |
| Division name | Chengalpattu |
| Region name | Chennai Region |
| Circle name | Tamilnadu |
| Related sub office | Chithamur S.O |
| Related head office | Chengalpattu H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 603313 | Chithamur S.O | Cheyur | Kanchipuram | Tamil Nadu |
| 603313 | Neerpair B.O | Cheyur | Kanchipuram | Tamil Nadu |
| 603313 | Kattudevadur B.O | Cheyyur | Kanchipuram | Tamil Nadu |
| 603313 | Nugumbal B.O | NA | Kanchipuram | Tamil Nadu |
| 603313 | Onambakkam B.O | NA | Kanchipuram | Tamil Nadu |
| 603313 | Vilanganur B.O | NA | Kanchipuram | Tamil Nadu |