| Office Name | Kalsar S.O |
| Pincodes | 388230 |
| Area | Kalsar |
| Office Status | Sub Post Office |
| Postal Circle | Gujarat |
| Postal Division | Anand |
| Postal Region | Vadodara |
| District | Kheda |
| State | Gujarat |
| Telephone No. | 02699-285468 |
| Office Name | Kalsar B.O |
| Pincodes | 854337 |
| Area | Kalsar |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Purnea |
| Postal Region | Muzaffarpur |
| District | Purnia |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Kalsar B.O |
| Pincodes | 396185 |
| Area | Kalsar |
| Office Status | Branch Post Office |
| Postal Circle | Gujarat |
| Postal Division | Valsad |
| Postal Region | Vadodara |
| District | Valsad |
| State | Gujarat |
| Telephone No. | Na |
| Office Name | Kalsar B.O |
| Pincodes | 364130 |
| Area | Kalsar |
| Office Status | Branch Post Office |
| Postal Circle | Gujarat |
| Postal Division | Bhavnagar |
| Postal Region | Rajkot |
| District | Bhavnagar |
| State | Gujarat |
| Telephone No. | Na |