| Office Name | Raja Annamalaipuram S.O |
| Pincodes | 600028 |
| Area | Raja Annamalaipuram |
| Office Status | Sub Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Chennai City South |
| Postal Region | Chennai Region |
| District | Chennai |
| State | Tamil Nadu |
| Telephone No. | 044-24939525 |
| Office Name | Ramakrishna Nagar S.O Chennai |
| Pincodes | 600028 |
| Area | Ramakrishna Nagar Chennai |
| Office Status | Sub Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Chennai City South |
| Postal Region | Chennai Region |
| District | Chennai |
| State | Tamil Nadu |
| Telephone No. | 044-28342475 |