| Post office | Seithur B.O |
| Pin code | 609601 |
| Office type | B.O |
| Taluk / city | Karaikal |
| District name | Karaikal |
| State name | Pondicherry |
| Delivery status | Delivery |
| Division name | Nagapattinam |
| Region name | Tiruchy |
| Circle name | Tamilnadu |
| Related sub office | Ambagarathur S.O |
| Related head office | Nagapattinam H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 609601 | Ambagarathur S.O | Karaikal | Karaikal | Pondicherry |
| 609601 | Seithur B.O | Karaikal | Karaikal | Pondicherry |
| 609601 | Nallambal B.O | Thirunallar Commune Panchayat | Karaikal | Pondicherry |