There are 3 post offices under PIN code 631211.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Karthikeyapuram B.O | Branch Office | Delivery | Tirutani | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 2 | Kasavarajpetta B.O | Branch Office | Delivery | Na | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |
| 3 | Saraswathinagar S.O | Sub Office | Delivery | Na | Tiruvallur | Kanchipuram | Chennai Region | Tamil Nadu | Tamilnadu |