| Office Name | St.Thomas Mount H.O |
| Pincodes | 600016 |
| Area | St.Thomas Mount |
| Office Status | Branch Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Chennai City South |
| Postal Region | Chennai Region |
| District | Kanchipuram |
| State | Tamil Nadu |
| Telephone No. | 044-22320694 |