There are 3 post offices under PIN code 631212.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Nallathur B.O | Branch Office | Delivery | Tirutani | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 2 | Poonimangadu S.O | Sub Office | Delivery | Tiruttani | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 3 | Thalavedu B.O | Branch Office | Delivery | Tirutani | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |