| Post office | Arni Fort S.O |
| Pin code | 632301 |
| Office type | S.O |
| Taluk / city | Arani |
| District name | Tiruvannamalai |
| State name | Tamil Nadu |
| Delivery status | Non-Delivery |
| Division name | Tiruvannamalai |
| Region name | Chennai Region |
| Circle name | Tamilnadu |
| Related sub office | NA |
| Related head office | Arni H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 632301 | Arni Fort S.O | Arani | Tiruvannamalai | Tamil Nadu |
| 632301 | Arunagirichatram S.O | Arani | Tiruvannamalai | Tamil Nadu |
| 632301 | Saidapettai Arni S.O | Arani | Tiruvannamalai | Tamil Nadu |
| 632301 | Arni H.O | Arni | Tiruvannamalai | Tamil Nadu |