| Office Name | Kairu S.O |
| Pincodes | 127029 |
| Area | Kairu |
| Office Status | Sub Post Office |
| Postal Circle | Haryana |
| Postal Division | Bhiwani |
| Postal Region | Ambala Hq |
| District | Bhiwani |
| State | Haryana |
| Telephone No. | 01253-283321 |
| Office Name | Kairu B.O |
| Pincodes | 333707 |
| Area | Kairu |
| Office Status | Branch Post Office |
| Postal Circle | Rajasthan |
| Postal Division | Jhunjhunu |
| Postal Region | Jodhpur |
| District | Jhujhunu |
| State | Rajasthan |
| Telephone No. | Na |