| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 351 | Lalchandpur | Sukhpur SO | 📍 852130 | Supaul | Post Office - PO |
| 352 | Lalganj | Lalganj BO | 📍 852137 | Chhatapur | Branch Post Office |
| 353 | Lalmania | Lalpur BO | 📍 847452 | Marauna | Branch Post Office |
| 354 | Lalpatti | Kataia Mahe BO | 📍 852131 | Pipra | Branch Post Office |
| 355 | Lalpur | Lalpur BO | 📍 847452 | Basantpur | Branch Post Office |
| 356 | Lalpur | Lalpur BO | 📍 852109 | Pipra | Branch Post Office |
| 357 | Lalpur | Lalpur BO | 📍 852137 | Chhatapur | Branch Post Office |
| 358 | Lalpur | Bhimnagar Bairrage SO | 📍 854338 | Basantpur | Post Office - PO |
| 359 | Lalpurgot | Bhimnagar Bairrage SO | 📍 854338 | Basantpur | Post Office - PO |
| 360 | Latauna | Latauna BO | 📍 852139 | Tribeniganj | Branch Post Office |
| 361 | Laukaha | Laukaha BO | 📍 852110 | Supaul | Branch Post Office |
| 362 | Laukaha | Hulas BO | 📍 852111 | Raghopur | Branch Post Office |
| 363 | Laukaha | Karjain Bazar SO | 📍 852215 | Saraigarh Bhaptiyahi | Post Office - PO |
| 364 | Laurah | Laurh BO | 📍 852131 | Supaul | Branch Post Office |
| 365 | Laurh | Laurh | 📍 852134 | Supaul | Branch Post Office |
| 366 | Lobiparas | Karjain Bazar SO | 📍 852215 | Basantpur | Post Office - PO |
| 367 | Madhopur | Pariyahi BO | 📍 852137 | Chhatapur | Branch Post Office |
| 368 | Madhora | Bhimnagar Bairrage SO | 📍 854338 | Basantpur | Post Office - PO |
| 369 | Madhubani | Madhubani BO | 📍 852125 | Chhatapur | Branch Post Office |
| 370 | Madhura | Bela Terha BO | 📍 852131 | Kishanpur | Branch Post Office |
| 371 | Magurar | Dabhari BO | 📍 852131 | Supaul | Branch Post Office |
| 372 | Mahaddipur | Pariyahi BO | 📍 852137 | Chhatapur | Branch Post Office |
| 373 | Mahadeopatti | Matiayari BO | 📍 854339 | Chhatapur | Branch Post Office |
| 374 | Mahammadganj | Mohmmad Ganj BO | 📍 852137 | Chhatapur | Branch Post Office |
| 375 | Maheshpur | Harlakhi BO | 📍 847240 | Marauna | Branch Post Office |
| 376 | Maheshpur | Maheshpur BO | 📍 852109 | Pipra | Branch Post Office |
| 377 | Maheshpur | Nemua BO | 📍 852130 | Supaul | Branch Post Office |
| 378 | Mahesua | Maheshua BO | 📍 852128 | Tribeniganj | Branch Post Office |
| 379 | Mahi Sardar Chakla | Tharbitta SO | 📍 852138 | Kishanpur | Post Office - PO |
| 380 | Mahichanda | Tullapatti BO | 📍 852108 | Pipra | Branch Post Office |
| 381 | Mahrampur Arazi | Kumarkhand SO | 📍 852112 | Tribeniganj | Post Office - PO |
| 382 | Mahrampur Milik | Kumarkhand SO | 📍 852112 | Tribeniganj | Post Office - PO |
| 383 | Mahua | Hariyahi BO | 📍 847452 | Nirmali | Branch Post Office |
| 384 | Mahuahi | Mauahi BO | 📍 847452 | Marauna | Branch Post Office |
| 385 | Mahulia | Mahulia BO | 📍 852214 | Tribeniganj | Branch Post Office |
| 386 | Mahuwa | Chainsinghpatti BO | 📍 852131 | Supaul | Branch Post Office |
| 387 | Mainaha | Nirmali SO Supaul | 📍 847452 | Marauna | Branch Post Office |
| 388 | Majhari | Kunauli Bazar SO | 📍 847451 | Nirmali | Post Office - PO |
| 389 | Makroi | Maheshpur BO | 📍 852109 | Pipra | Branch Post Office |
| 390 | Malar | Malarh BO | 📍 852138 | Kishanpur | Branch Post Office |
| 391 | Malhad | Dabhari BO | 📍 852131 | Supaul | Branch Post Office |
| 392 | Malhani | Sukhpur SO | 📍 852130 | Supaul | Post Office - PO |
| 393 | Manganj | Manganj BO | 📍 852214 | Tribeniganj | Branch Post Office |
| 394 | Manharpatti | Manoharpatti BO | 📍 847452 | Marauna | Branch Post Office |
| 395 | Manik Chand Chakla | Jia Ram Raghopur SO | 📍 852111 | Raghopur | Post Office - PO |
| 396 | Mansapur | Karjain Bazar SO | 📍 852215 | Raghopur | Post Office - PO |
| 397 | Marauna | Marauna BO | 📍 847408 | Marauna | Branch Post Office |
| 398 | Marauna BO | Marauna BO | 📍 852133 | Supaul | Branch Post Office |
| 399 | Maricha | Bakaur BO | 📍 852130 | Supaul | Branch Post Office |
| 400 | Matiari | Matiayari BO | 📍 854339 | Chhatapur | Branch Post Office |