| Office Name | Machhagar B.O |
| Pincodes | 841436 |
| Area | Machhagar |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Gopalganj |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Machuta B.O |
| Pincodes | 841233 |
| Area | Machuta |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Madhopur B.O |
| Pincodes | 841210 |
| Area | Madhopur |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Madhopur B.O |
| Pincodes | 841413 |
| Area | Madhopur |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Gopalganj |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Madhopur B.O |
| Pincodes | 841232 |
| Area | Madhopur |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Madhopur B.O |
| Pincodes | 841506 |
| Area | Madhopur |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Maharani B.O |
| Pincodes | 841407 |
| Area | Maharani |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Gopalganj |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Maheshpur B.O |
| Pincodes | 841508 |
| Area | Maheshpur |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Gopalganj |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Mahmodpur B.O |
| Pincodes | 841232 |
| Area | Mahmodpur |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Mahodipur B.O |
| Pincodes | 841226 |
| Area | Mahodipur |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Mahrajganj S.O Siwan |
| Pincodes | 841238 |
| Area | Mahrajganj Siwan |
| Office Status | Sub Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | 06153-242440 |
| Office Name | Mahuwa B.O |
| Pincodes | 841407 |
| Area | Mahuwa |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Gopalganj |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Mahuwal Mahal S.O |
| Pincodes | 841240 |
| Area | Mahuwal Mahal |
| Office Status | Sub Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | 06153-111111 |
| Office Name | Mahuwan B.O |
| Pincodes | 841437 |
| Area | Mahuwan |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Gopalganj |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Mahuwari B.O |
| Pincodes | 841227 |
| Area | Mahuwari |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Mairwa S.O |
| Pincodes | 841239 |
| Area | Mairwa |
| Office Status | Sub Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | 06157-232421 |
| Office Name | Makariyar B.O |
| Pincodes | 841245 |
| Area | Makariyar |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Manbodhparsauni B.O |
| Pincodes | 841440 |
| Area | Manbodhparsauni |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Gopalganj |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Mandrauli B.O |
| Pincodes | 841233 |
| Area | Mandrauli |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Mania B.O |
| Pincodes | 841245 |
| Area | Mania |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |