| Office Name | Sonai B.O |
| Pincodes | 847308 |
| Area | Sonai |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Madhubani |
| Postal Region | Muzaffarpur |
| District | Madhubani |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Sonai B.O |
| Pincodes | 205265 |
| Area | Sonai |
| Office Status | Branch Post Office |
| Postal Circle | Uttar Pradesh |
| Postal Division | Mainpuri |
| Postal Region | Agra |
| District | Mainpuri |
| State | Uttar Pradesh |
| Telephone No. | Na |
| Office Name | Sonai B.O |
| Pincodes | 212301 |
| Area | Sonai |
| Office Status | Branch Post Office |
| Postal Circle | Uttar Pradesh |
| Postal Division | Allahabad |
| Postal Region | Allahabad |
| District | Allahabad |
| State | Uttar Pradesh |
| Telephone No. | Na |
| Office Name | Sonai B.O |
| Pincodes | 713148 |
| Area | Sonai |
| Office Status | Branch Post Office |
| Postal Circle | West Bengal |
| Postal Division | Burdwan |
| Postal Region | South Bengal |
| District | Bardhaman |
| State | West Bengal |
| Telephone No. | Na |