| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 551 | Makhdumpur | B.Deorhi SO | 📍 851113 | Teghra | Branch Post Office |
| 552 | Makhdumpur | Teghra SO | 📍 851133 | Teghra | Post Office - PO |
| 553 | Makhopur | Sahuri BO | 📍 851112 | Barauni | Branch Post Office |
| 554 | Makhsaspur | Bhairwar BO | 📍 851129 | Begusarai | Branch Post Office |
| 555 | Maksaspur | Kabia BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 556 | Malhipur | B.T.P.P SO | 📍 851116 | Barauni | Branch Post Office |
| 557 | Malhipur | Maheshpur BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 558 | Malhipur Barari | Saligrami BO | 📍 851217 | Sahebpur Kamal | Branch Post Office |
| 559 | Malhipur Karari | Saligrami BO | 📍 851217 | Sahebpur Kamal | Branch Post Office |
| 560 | Maliatauri | Churamachak BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 561 | Malipur | Malipur BO | 📍 848204 | Garhpura | Branch Post Office |
| 562 | Malpur | Malpur BO | 📍 848202 | Chhorahi | Branch Post Office |
| 563 | Malpur | Baraipura BO | 📍 848204 | Garhpura | Branch Post Office |
| 564 | Malpur | Paspura BO | 📍 851129 | Begusarai | Branch Post Office |
| 565 | Malti | Pipra Devas BO | 📍 851112 | Teghra | Branch Post Office |
| 566 | Mamapari | Churamachak BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 567 | Mamrezpur | Sadanandpur BO | 📍 851211 | Balia | Branch Post Office |
| 568 | Mananpur | Banwaripur BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 569 | Manerpur | Samsa BO | 📍 848201 | Naokothi | Branch Post Office |
| 570 | Manikpur | Rajaur BO | 📍 848204 | Garhpura | Branch Post Office |
| 571 | Manipa | Maniappa BO | 📍 851129 | Matihani | Branch Post Office |
| 572 | Manka Salempur | Bhairwar BO | 📍 851129 | Begusarai | Branch Post Office |
| 573 | Mansarpur | Kabia BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 574 | Mansur Chak | Mansurchak SO | 📍 851128 | Mansurchak | Post Office - PO |
| 575 | Mansur Chak Arazi | Mansurchak SO | 📍 851128 | Mansurchak | Post Office - PO |
| 576 | Mansurchak | Mansurchak SO | 📍 851128 | Mansurchak | Post Office - PO |
| 577 | Mansurpur | Paharpur BO | 📍 851211 | Balia | Branch Post Office |
| 578 | Manupur | Manopur BO | 📍 851111 | Bhagwanpur | Branch Post Office |
| 579 | Maranchi | Bachhawara SO | 📍 851111 | Bachhwara | Post Office - PO |
| 580 | Maranchi | Marachi Kalan BO | 📍 851111 | Mansurchak | Branch Post Office |
| 581 | Maranchi Khurd | Marachi Kalan BO | 📍 851111 | Bachhwara | Branch Post Office |
| 582 | Maskan Dargah | Naipur BO | 📍 851128 | Mansurchak | Branch Post Office |
| 583 | Masti Fatehpur | Bhairwar BO | 📍 851129 | Begusarai | Branch Post Office |
| 584 | Masudanpur | Madhusudanpur BO | 📍 851211 | Balia | Branch Post Office |
| 585 | Mathurapur | Rajakpur BO | 📍 851130 | Naokothi | Branch Post Office |
| 586 | Matihani | Meghaul SO | 📍 848202 | Khudabandpur | Post Office - PO |
| 587 | Matihani | Lakhanpatti BO | 📍 848204 | Chhorahi | Branch Post Office |
| 588 | Matihani | Matihani BO | 📍 851129 | Matihani | Branch Post Office |
| 589 | Matihani | Rampur Matihani BO | 📍 851129 | Begusarai | Branch Post Office |
| 590 | Matlupur | Teghra SO | 📍 851133 | Teghra | Post Office - PO |
| 591 | Mauji Hari Singh | Sital Rampur BO | 📍 848201 | Garhpura | Branch Post Office |
| 592 | Mauji Than Singh | Bagras BO | 📍 848201 | Garhpura | Branch Post Office |
| 593 | Medhepura | Chandaur BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 594 | Meghaul | Meghaul SO | 📍 848202 | Khudabandpur | Post Office - PO |
| 595 | Mehpatol | Mahipa Tol BO | 📍 851211 | Dandari | Branch Post Office |
| 596 | Menhan | Dandari BO | 📍 851211 | Dandari | Branch Post Office |
| 597 | Milik | Cheria BO | 📍 851132 | Cheria Bariarpur | Branch Post Office |
| 598 | Milik Bahauddinpur | Danauli Phulwaria BO | 📍 851211 | Balia | Branch Post Office |
| 599 | Milik Mehda | Mehdasahpur BO | 📍 851132 | Cheria Bariarpur | Branch Post Office |
| 600 | Milki | Bhoja BO | 📍 848202 | Khudabandpur | Branch Post Office |