| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 1551 | Mahamadpur | Bahadur Bazar BO | 📍 841404 | Goriakothi | Post Office - PO |
| 1552 | Mahamadpur | Mohamadpur BO | 📍 841438 | Barharia | Branch Post Office |
| 1553 | Mahamd Pur | Goreakothi SO | 📍 841434 | Goriakothi | Post Office - PO |
| 1554 | Mahammadpur | Andar SO | 📍 841231 | Andar | Post Office - PO |
| 1555 | Mahammadpur | Bishunpura SO | 📍 841407 | Barharia | Post Office - PO |
| 1556 | Mahammadpur | Bhagwanpur Hat SO | 📍 841408 | Bhagwanpur Hat | Post Office - PO |
| 1557 | Mahammadpur | Dumra BO | 📍 841416 | Goriakothi | Branch Post Office |
| 1558 | Mahammadpur | Goreakothi SO | 📍 841434 | Goriakothi | Post Office - PO |
| 1559 | Mahamudpur | Mania BO | 📍 841245 | Ziradei | Branch Post Office |
| 1560 | Mahanagar | Nandamura BO | 📍 841203 | Siswan | Branch Post Office |
| 1561 | Maharajganj | Mahrajganj SO Siwan | 📍 841238 | Maharajganj | Post Office - PO |
| 1562 | Maharajganj | Pasnauli BO | 📍 841238 | Maharajganj | Branch Post Office |
| 1563 | Maharajganj | Sonbarsa BO | 📍 841241 | Maharajganj | Branch Post Office |
| 1564 | Maharajgnaj Road Basantpur | Basantpur SO Siwan | 📍 841406 | Basantpur | Post Office - PO |
| 1565 | Mahazi Diara Kakarghatta | Tari BO | 📍 841509 | Raghunathpur | Branch Post Office |
| 1566 | Mahazi Gondauli | Newari BO | 📍 841509 | Raghunathpur | Branch Post Office |
| 1567 | Mahbub Chhapra | Barhria SO | 📍 841232 | Barharia | Post Office - PO |
| 1568 | Mahdabad | Barhria SO | 📍 841232 | Barharia | Post Office - PO |
| 1569 | Mahendar Buzurg | Ramgarh BO | 📍 841203 | Raghunathpur | Branch Post Office |
| 1570 | Mahendra High School | Zeradei SO | 📍 841245 | Ziradei | Post Office - PO |
| 1571 | Mahmadpur | Shiopur Sakra BO | 📍 841245 | Ziradei | Branch Post Office |
| 1572 | Mahmudpur | Barhria SO | 📍 841232 | Barharia | Post Office - PO |
| 1573 | Mahmudpur | Ruiyabangra BO | 📍 841245 | Ziradei | Branch Post Office |
| 1574 | Mahna | Basantpur SO Siwan | 📍 841406 | Bhagwanpur Hat | Post Office - PO |
| 1575 | Mahpalwa | Darauli SO | 📍 841234 | Darauli | Post Office - PO |
| 1576 | Mahpur | Hardia BO | 📍 841226 | Pachrukhi | Branch Post Office |
| 1577 | Mahpur | Faridpur BO | 📍 841231 | Hussainganj | Branch Post Office |
| 1578 | Mahrauli | Newari BO | 📍 841509 | Raghunathpur | Branch Post Office |
| 1579 | Mahual | Mahuwal Mahal SO | 📍 841240 | Hasanpura | Post Office - PO |
| 1580 | Mahual | Badram BO | 📍 841241 | Hussainganj | Branch Post Office |
| 1581 | Mahualbari | Langarpura BO | 📍 841239 | Mairwa | Branch Post Office |
| 1582 | Mahuari | Mahuwari BO | 📍 841227 | Pachrukhi | Branch Post Office |
| 1583 | Mahuja | Darauli SO | 📍 841234 | Darauli | Post Office - PO |
| 1584 | Mahuwaee | Jagdishpur Kothi BO | 📍 841243 | Nautan | Branch Post Office |
| 1585 | Mahuwal Bazar | Badram BO | 📍 841241 | Siwan | Branch Post Office |
| 1586 | Mahuwari tola | Barhipurgop BO | 📍 841408 | Bhagwanpur Hat | Branch Post Office |
| 1587 | Maidnia | Seotapur BO | 📍 841239 | Mairwa | Branch Post Office |
| 1588 | Main raod Mairwa | Mairwa SO | 📍 841239 | Mairwa | Post Office - PO |
| 1589 | Main Road Basantpur | Basantpur SO Siwan | 📍 841406 | Basantpur | Post Office - PO |
| 1590 | Mairi Dalip | Govindapur BO | 📍 841507 | Bhagwanpur Hat | Branch Post Office |
| 1591 | Mairi Makhsuspur | Chakia BO | 📍 841507 | Bhagwanpur Hat | Branch Post Office |
| 1592 | Mairi Sudama | Govindapur BO | 📍 841507 | Bhagwanpur Hat | Branch Post Office |
| 1593 | Mairitanr | Dumrahar BO | 📍 841435 | Guthani | Branch Post Office |
| 1594 | Mairitanr Diara | Dumrahar BO | 📍 841435 | Guthani | Branch Post Office |
| 1595 | Mairwa | Anugrhnagar BO | 📍 841239 | Mairwa | Branch Post Office |
| 1596 | Mairwa Dham | Anugrhnagar BO | 📍 841239 | Mairwa | Branch Post Office |
| 1597 | Majahida Majahidpur | Dhanuti BO | 📍 841226 | Siwan | Branch Post Office |
| 1598 | Majharia | Gayaspur BO | 📍 841210 | Siswan | Branch Post Office |
| 1599 | Majharul Haq Tarwara | Tarwara SO | 📍 841506 | Pachrukhi | Post Office - PO |
| 1600 | Majhauli Road Mairwa | Mairwa SO | 📍 841239 | Mairwa | Post Office - PO |