| Office Name | Riga S.O |
| Pincodes | 843327 |
| Area | Riga |
| Office Status | Sub Post Office |
| Postal Circle | Bihar |
| Postal Division | Sitamarhi |
| Postal Region | Muzaffarpur |
| District | Sitamarhi |
| State | Bihar |
| Telephone No. | 06226-111111 |
| Office Name | Riga B.O |
| Pincodes | 791102 |
| Area | Riga |
| Office Status | Branch Post Office |
| Postal Circle | North Eastern |
| Postal Division | Arunachal Pradesh |
| Postal Region | Shillong Hq |
| District | East Siang |
| State | Arunachal Pradesh |
| Telephone No. | Na |