| Office Name | Ulundai B.O |
| Pincodes | 602105 |
| Area | Ulundai |
| Office Status | Branch Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Kanchipuram |
| Postal Region | Chennai Region |
| District | Tiruvallur |
| State | Tamil Nadu |
| Telephone No. | Na |
| Office Name | Ulundai B.O |
| Pincodes | 604403 |
| Area | Ulundai |
| Office Status | Branch Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Tiruvannamalai |
| Postal Region | Chennai Region |
| District | Tiruvannamalai |
| State | Tamil Nadu |
| Telephone No. | Na |