| Office Name | Karai B.O |
| Pincodes | 801109 |
| Area | Karai |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Patna |
| Postal Region | Patna Hq |
| District | Patna |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Karai B.O |
| Pincodes | 321602 |
| Area | Karai |
| Office Status | Branch Post Office |
| Postal Circle | Rajasthan |
| Postal Division | Bharatpur |
| Postal Region | Jaipur Hq |
| District | Bharatpur |
| State | Rajasthan |
| Telephone No. | Na |
| Office Name | Karai S.O |
| Pincodes | 632404 |
| Area | Karai |
| Office Status | Sub Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Arakkonam |
| Postal Region | Chennai Region |
| District | Vellore |
| State | Tamil Nadu |
| Telephone No. | 04172-272244 |
| Office Name | Karai B.O |
| Pincodes | 631552 |
| Area | Karai |
| Office Status | Branch Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Kanchipuram |
| Postal Region | Chennai Region |
| District | Kanchipuram |
| State | Tamil Nadu |
| Telephone No. | Na |
| Office Name | Karai B.O |
| Pincodes | 605201 |
| Area | Karai |
| 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 | Karai B.O |
| Pincodes | 621109 |
| Area | Karai |
| Office Status | Branch Post Office |
| Postal Circle | Tamilnadu |
| Postal Division | Srirangam |
| Postal Region | Tiruchy |
| District | Perambalur |
| State | Tamil Nadu |
| Telephone No. | Na |
| Office Name | Karai B.O |
| Pincodes | 733121 |
| Area | Karai |
| Office Status | Branch Post Office |
| Postal Circle | West Bengal |
| Postal Division | West Dinajpur |
| Postal Region | North Bengal And Sikkim |
| District | South Dinajpur |
| State | West Bengal |
| Telephone No. | Na |