There are 5 post offices under PIN code 629251.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Colachel Port S.O | Sub Office | Non-Delivery | Kalkulam | Kanyakumari | Kanniyakumari | Madurai | Tamil Nadu | Tamilnadu |
| 2 | Colachel S.O | Sub Office | Delivery | Kalkulam | Kanyakumari | Kanniyakumari | Madurai | Tamil Nadu | Tamilnadu |
| 3 | Kodimunai B.O | Branch Office | Delivery | Kalkulam | Kanyakumari | Kanniyakumari | Madurai | Tamil Nadu | Tamilnadu |
| 4 | Kurumpanai B.O | Branch Office | Delivery | Kalkulam | Kanyakumari | Kanniyakumari | Madurai | Tamil Nadu | Tamilnadu |
| 5 | Vaniyakudi B.O | Branch Office | Delivery | Kalkulam | Kanyakumari | Kanniyakumari | Madurai | Tamil Nadu | Tamilnadu |