| Office Name | Mambalam R.S. S.O |
| Pincodes | 600033 |
| Area | Mambalam R.S. |
| Office Status | Sub Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Chennai City South |
| Postal Region | Chennai Region |
| District | Chennai |
| State | Tamil Nadu |
| Telephone No. | 044-24718309 |
| Office Name | West Mambalam S.O |
| Pincodes | 600033 |
| Area | West Mambalam |
| Office Status | Sub Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Chennai City South |
| Postal Region | Chennai Region |
| District | Chennai |
| State | Tamil Nadu |
| Telephone No. | 044-23715003 |