| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 1001 | Mianapur Dubauli | B. Ratanpura BO | 📍 845438 | Bairia | Branch Post Office |
| 1002 | Mirza Tola | Bettiah HO | 📍 845438 | Bettiah | Head Post Office - H |
| 1003 | Misir Bherihari | B. Ratanpura BO | 📍 845438 | Bairia | Branch Post Office |
| 1004 | Misraulia | Naurangia BO | 📍 845105 | Sidhaw | Branch Post Office |
| 1005 | Misraulia | Taruanwa BO | 📍 845105 | Sidhaw | Branch Post Office |
| 1006 | Misraulia | Pokharia Rai BO | 📍 845449 | Chanpatia | Branch Post Office |
| 1007 | Misrauliya | Jogapatti SO | 📍 845452 | Jogapatti | Post Office - PO |
| 1008 | Mitni | Belsandi BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1009 | Mohachhinain | Mohachhinain BO | 📍 845454 | Majhaulia | Branch Post Office |
| 1010 | Mohchhi Nain | Ghogha BO | 📍 845449 | Chanpatia | Branch Post Office |
| 1011 | Mohchhi Sughar | Ghogha BO | 📍 845449 | Chanpatia | Branch Post Office |
| 1012 | Mohiuddinpur | Chailabhar BO | 📍 845454 | Majhaulia | Branch Post Office |
| 1013 | Mohna | Harnatar BO | 📍 845105 | Sidhaw | Branch Post Office |
| 1014 | Moradih | Parsauna BO | 📍 845104 | Bhitaha | Branch Post Office |
| 1015 | Moti Chhapar | Chaubey Tola BO | 📍 845449 | Chanpatia | Branch Post Office |
| 1016 | Motihari | Bhitaha Nizamat BO | 📍 845438 | Bairia | Branch Post Office |
| 1017 | Motihari | Mangrahari BO | 📍 845451 | Narkatiaganj | Branch Post Office |
| 1018 | Mujauna | Behari Bankatwa BO | 📍 845307 | Sikta | Branch Post Office |
| 1019 | Mujauna | Anjua BO | 📍 845455 | Narkatiaganj | Branch Post Office |
| 1020 | Mujauna | Sugauli BO | 📍 845455 | Narkatiaganj | Branch Post Office |
| 1021 | Mujra | Bargo BO | 📍 845103 | Ramnagar | Branch Post Office |
| 1022 | Muluka Tola | Chanayan Bandh BO | 📍 845454 | Majhaulia | Branch Post Office |
| 1023 | Muluka Tola | Bishabhar Pur BO | 📍 845459 | Majhaulia | Branch Post Office |
| 1024 | Muradih | Madhubani SO | 📍 845104 | Thakrahan | Post Office - PO |
| 1025 | Murali | Harinagar SO | 📍 845103 | Ramnagar | Post Office - PO |
| 1026 | Murera | Dianmarawa BO | 📍 845103 | Ramnagar | Branch Post Office |
| 1027 | Murli | Murali BO | 📍 845103 | Bagaha | Branch Post Office |
| 1028 | Murli | Belwa Bahuari BO | 📍 845455 | Narkatiaganj | Branch Post Office |
| 1029 | Murli | Musharwa BO | 📍 845455 | Narkatiaganj | Branch Post Office |
| 1030 | Murli Bharahwa | Belwa Bahuari BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1031 | Murlidih | Majharia BO | 📍 845106 | Ramnagar | Branch Post Office |
| 1032 | Murlidih | Bargajwa BO | 📍 845451 | Narkatiaganj | Branch Post Office |
| 1033 | Musaharwa | Musharwa BO | 📍 845455 | Narkatiaganj | Branch Post Office |
| 1034 | Musaharwa | Narkaiaganj SO | 📍 845455 | Narkatiaganj | Post Office - PO |
| 1035 | Musahri | Dhanaha BO | 📍 845104 | Madhubani | Branch Post Office |
| 1036 | Musahri | Chanpatia Bazar SO | 📍 845449 | Chanpatia | Post Office - PO |
| 1037 | Musahri | Dharampur BO | 📍 845449 | Chanpatia | Branch Post Office |
| 1038 | Musahri | Chuhari SO | 📍 845450 | Chanpatia | Post Office - PO |
| 1039 | Musahri | Mushahari BO | 📍 845450 | Lauriya | Branch Post Office |
| 1040 | Musahri Tola Bankat | Sariswa Bazar BO | 📍 845454 | Majhaulia | Branch Post Office |
| 1041 | Naakar Rampur | Rampurwa BO | 📍 845105 | Sidhaw | Branch Post Office |
| 1042 | Nagardahi | Inarwa Bazar BO | 📍 845306 | Mainatanr | Branch Post Office |
| 1043 | Nainaha | Dhanaha BO | 📍 845104 | Madhubani | Branch Post Office |
| 1044 | Nandtola | Ramparsauna BO | 📍 845453 | Lauriya | Branch Post Office |
| 1045 | Nankar | Mangrahari BO | 📍 845451 | Narkatiaganj | Branch Post Office |
| 1046 | Nankar | Jogapatti SO | 📍 845452 | Jogapatti | Post Office - PO |
| 1047 | Nankar | Siswania BO | 📍 845453 | Lauriya | Branch Post Office |
| 1048 | Narahwa | Sisai BO | 📍 845104 | Madhubani | Branch Post Office |
| 1049 | Naraingarh | Sidhaw BO | 📍 845105 | Sidhaw | Branch Post Office |
| 1050 | Narainpur | Champapur Gonauli BO | 📍 845107 | Bagaha | Branch Post Office |