| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 901 | Lohni | Pothia SO | 📍 854114 | Falka | Post Office - PO |
| 902 | Ludhia | Baltar BO | 📍 855113 | Azamnagar | Branch Post Office |
| 903 | Lutipur | B.Balrampur BO | 📍 854317 | Balrampur | Branch Post Office |
| 904 | Machhail | Fatehpur BO | 📍 855101 | Barsoi | Branch Post Office |
| 905 | Machhkhairan | Mukuriya BO | 📍 854317 | Azamnagar | Branch Post Office |
| 906 | Machola | Pranpur BO | 📍 854116 | Pranpur | Branch Post Office |
| 907 | Madanpur | Mukuriya BO | 📍 854317 | Azamnagar | Branch Post Office |
| 908 | Madansahi | Pranpur BO | 📍 854116 | Pranpur | Branch Post Office |
| 909 | Madarichak B O | Madarichak BO | 📍 854113 | Manihari | Branch Post Office |
| 910 | Madarsa | Bhangaha BO | 📍 854114 | Sameli | Branch Post Office |
| 911 | Madhaili | Gurubazar SO | 📍 854104 | Kursela | Post Office - PO |
| 912 | Madhaipur | Sadapur BO | 📍 855113 | Kadwa | Branch Post Office |
| 913 | Madhaipur Gachh | Madhopur BO | 📍 854317 | Barsoi | Branch Post Office |
| 914 | Madhaipur Milik | Sadapur BO | 📍 855113 | Kadwa | Branch Post Office |
| 915 | Madhepura | Belwa BO | 📍 855107 | katihar | Branch Post Office |
| 916 | Madhopur | Madhopur BO | 📍 854317 | Balrampur | Branch Post Office |
| 917 | Madhubani | Semapur Factory SO | 📍 854115 | Barari | Post Office - PO |
| 918 | Madhura | Madhura BO | 📍 854107 | Korha | Branch Post Office |
| 919 | Madhura Chhota Village | Madhura BO | 📍 854107 | Pranpur | Branch Post Office |
| 920 | Madhura Naya Tola | Madhura BO | 📍 854107 | Pranpur | Branch Post Office |
| 921 | Madhyamtola | Sadapur BO | 📍 855113 | Kadwa | Branch Post Office |
| 922 | Maghaili | Dhanetha BO | 📍 854108 | Falka | Branch Post Office |
| 923 | Mahabbatpur | Baltar BO | 📍 855113 | Azamnagar | Branch Post Office |
| 924 | Mahadeo Bhita | Belbari BO | 📍 855113 | Azamnagar | Branch Post Office |
| 925 | Mahadeonagar | Pranpur BO | 📍 854116 | Pranpur | Branch Post Office |
| 926 | Mahadeopur | Mahadevpur SO Katihar | 📍 854116 | Pranpur | Post Office - PO |
| 927 | Mahadipara | Belbari BO | 📍 855113 | Azamnagar | Branch Post Office |
| 928 | Mahamdia | Kalsar BO | 📍 854337 | Hasanganj | Branch Post Office |
| 929 | Mahammad Nagar | Salepur BO | 📍 854114 | Falka | Branch Post Office |
| 930 | Mahanagar | Mahinagar BO | 📍 854317 | Barsoi | Branch Post Office |
| 931 | Mahananda colony | Katihar Bmp Camp SO | 📍 854106 | katihar | Post Office - PO |
| 932 | Maharaji Chakla | Sameli BO | 📍 854101 | Falka | Branch Post Office |
| 933 | Maharampur | Millik Palagarh BO | 📍 855114 | Pranpur | Branch Post Office |
| 934 | Maharani Milik | Rounia BO | 📍 854104 | Barari | Branch Post Office |
| 935 | Mahdai | Belwa BO | 📍 854107 | katihar | Branch Post Office |
| 936 | Mahdaili | Dumaria BO | 📍 855114 | Dandkhora | Branch Post Office |
| 937 | Mahesarkhore | Gunjan BO | 📍 854317 | Barsoi | Branch Post Office |
| 938 | Mahesh Bathna | Baghwa BO | 📍 854317 | Balrampur | Branch Post Office |
| 939 | Maheshbatti | Millik Palagarh BO | 📍 855114 | Kadwa | Branch Post Office |
| 940 | Maheshlatta | Dhumnagar BO | 📍 855113 | Azamnagar | Branch Post Office |
| 941 | Maheshlatta Milik Arazi | Dhumnagar BO | 📍 855113 | Azamnagar | Branch Post Office |
| 942 | Maheshmara Diara | Sameli BO | 📍 854101 | Falka | Branch Post Office |
| 943 | Maheshpur | Musapur BO | 📍 854108 | Korha | Branch Post Office |
| 944 | Maheshpur | B.Deora BO | 📍 854113 | Manihari | Branch Post Office |
| 945 | Maheshpur | Salepur BO | 📍 854114 | Falka | Branch Post Office |
| 946 | Maheshpur | Gunjan BO | 📍 854317 | Barsoi | Branch Post Office |
| 947 | Maheshpur | Mahinagar BO | 📍 854317 | Barsoi | Branch Post Office |
| 948 | Maheshpur | Dhumnagar BO | 📍 855113 | Azamnagar | Branch Post Office |
| 949 | Maheshwa | Rupaspur BO | 📍 854304 | Korha | Branch Post Office |
| 950 | Mahespur | B.Deora BO | 📍 854113 | Manihari | Branch Post Office |