| Office Name | Kalaiyur B.O |
| Pincodes | 604206 |
| Area | Kalaiyur |
| Office Status | Branch Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Pondicherry |
| Postal Region | Chennai Region |
| District | Villupuram |
| State | Tamil Nadu |
| Telephone No. | Na |
| Office Name | Kalaiyur B.O |
| Pincodes | 623712 |
| Area | Kalaiyur |
| Office Status | Branch Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Ramanathapuram |
| Postal Region | Madurai |
| District | Ramanathapuram |
| State | Tamil Nadu |
| Telephone No. | Na |
| Office Name | Kalaiyur B.O |
| Pincodes | 607109 |
| Area | Kalaiyur |
| Office Status | Branch Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Cuddalore |
| Postal Region | Tiruchy |
| District | Cuddalore |
| State | Tamil Nadu |
| Telephone No. | Na |