Arni is located in the district of Tiruvannamalai, Tamil Nadu. The pincode of Arni is 632301. The area "Arni" lies under takula of Arni and has a Head Office. Arni comes under the head office NA. The postal division for pin code 632301 is Tiruvannamalai.
| Area | Arni |
| Pincode | 632301 |
| Taluka or Tehsil | Arni |
| District | Tiruvannamalai |
| State | Tamil Nadu |
| Office Status | Head Office |
| Postal Division | Tiruvannamalai |
| Postal Region | Chennai Region |
| Sub Office | NA |
| Head Office | NA |
| Contact Address | Postmaster, Post Office Arni (Head Office), Arni, Tamil Nadu, India, Pin Code: 632301 |
| Telephone | 04173-226909 |
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 632301 | Arni pin code | Tiruvannamalai | Arni | Head Office |
| 632301 | Arni Fort pin code | Tiruvannamalai | Arani | Sub Office |
| 632301 | Arunagirichatram pin code | Tiruvannamalai | Arani | Sub Office |
| 632301 | Saidapettai Arni pin code | Tiruvannamalai | Arani | Sub Office |
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