| S.No | Post Office Name | Pincode | Circle Name | Region Name | Division Name | Office Type | Delivery | District | State Name | Latitude | Longitude |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Ennore Thermal Station SO | 600057 | Tamilnadu Circle | Chennai City Region | Tambaram Division | PO | Delivery | CHENNAI | TAMIL NADU | 13.3414722 | 80.5198889 |
| 2 | Ernavur SO | 600057 | Tamilnadu Circle | Chennai City Region | Tambaram Division | PO | Non Delivery | THIRUVALLUR | TAMIL NADU | 13.1014167 | 80.4502778 |
| 3 | Kamarajnagar BO | 600057 | Tamilnadu Circle | Chennai City Region | Tambaram Division | BO | Non Delivery | THIRUVALLUR | TAMIL NADU | 13.207 | 80.293 |