| Post Office | Arni Fort S.o |
| Division | Tiruvannamalai |
| Region | Chennai Region |
| Circle | Tamilnadu |
| Taluka | Arani |
| District | Tiruvannamalai |
| State | Tamil Nadu |
| Phone | 04175-253067 |
| Sub Office | NA |
| Head Office | Arni H.O |
| Pincode |
632301
|
| Post Office | Arunagirichatram S.o |
| Division | Tiruvannamalai |
| Region | Chennai Region |
| Circle | Tamilnadu |
| Taluka | Arani |
| District | Tiruvannamalai |
| State | Tamil Nadu |
| Phone | 04175-253067 |
| Sub Office | NA |
| Head Office | Arni H.O |
| Pincode |
632301
|
| Post Office | Kannamangalam Bazaar B.o |
| Division | Tiruvannamalai |
| Region | Chennai Region |
| Circle | Tamilnadu |
| Taluka | Arani |
| District | Tiruvannamalai |
| State | Tamil Nadu |
| Phone | NA |
| Sub Office | Kannamangalam S.O |
| Head Office | Arni H.O |
| Pincode |
632311
|
| Post Office | Saidapettai Arni S.o |
| Division | Tiruvannamalai |
| Region | Chennai Region |
| Circle | Tamilnadu |
| Taluka | Arani |
| District | Tiruvannamalai |
| State | Tamil Nadu |
| Phone | 04175-253067 |
| Sub Office | NA |
| Head Office | Arni H.O |
| Pincode |
632301
|