| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 801 | Konhra | Nawalpur BO | 📍 845452 | Jogapatti | Branch Post Office |
| 802 | Konhra Dih | Shikarpur BO | 📍 845454 | Majhaulia | Branch Post Office |
| 803 | Kot Banjariya | Bargo BO | 📍 845103 | Ramnagar | Branch Post Office |
| 804 | Kotaraha | Naurangia BO | 📍 845105 | Sidhaw | Branch Post Office |
| 805 | Kotraha | Naurangia BO | 📍 845105 | Sidhaw | Branch Post Office |
| 806 | Kotwa | Bargaon BO | 📍 845101 | Bagaha | Branch Post Office |
| 807 | Kuarpatti | Machhargawan BO | 📍 845452 | Jogapatti | Branch Post Office |
| 808 | Kukurha | Maniari BO | 📍 845451 | Narkatiaganj | Branch Post Office |
| 809 | Kumhia | Khairpokhara BO | 📍 845105 | Bagaha | Branch Post Office |
| 810 | Kumhiya Kalan | Gudgudi BO | 📍 845106 | Ramnagar | Branch Post Office |
| 811 | Kumhiya Khurd | Gudgudi BO | 📍 845106 | Ramnagar | Branch Post Office |
| 812 | Kunai Lachhmipur | Taruanwa BO | 📍 845105 | Sidhaw | Branch Post Office |
| 813 | Kundalpur | Bargajwa BO | 📍 845451 | Narkatiaganj | Branch Post Office |
| 814 | Kunriya | Bhawal BO | 📍 845106 | Ramnagar | Branch Post Office |
| 815 | Kuria | Ranglalahi BO | 📍 845104 | Madhubani | Branch Post Office |
| 816 | Kursi Barwa | Kurshi Barawa BO | 📍 845307 | Sikta | Branch Post Office |
| 817 | Kurwa Mathia | Chuhari SO | 📍 845450 | Chanpatia | Post Office - PO |
| 818 | Kurwa Mathia | Kurwa Mathia BO | 📍 845450 | Chanpatia | Branch Post Office |
| 819 | Lachhanauta | Narkaiaganj SO | 📍 845455 | Narkatiaganj | Post Office - PO |
| 820 | Lachhmipur | Naurangia BO | 📍 845105 | Sidhaw | Branch Post Office |
| 821 | Lachhmipur | Tarwalia BO | 📍 845105 | Sidhaw | Branch Post Office |
| 822 | Lachhmipur | Laxmipur Bherihari BO | 📍 845107 | Sidhaw | Branch Post Office |
| 823 | Lachhmipur | Marjadwa BO | 📍 845306 | Mainatanr | Branch Post Office |
| 824 | Lachhmipur | Dhamaura BO | 📍 845449 | Chanpatia | Branch Post Office |
| 825 | Lachhmipur | Laxmipur BO | 📍 845450 | Jogapatti | Branch Post Office |
| 826 | Lachhmipur | Dumari Bazar BO | 📍 845452 | Jogapatti | Branch Post Office |
| 827 | Lachhmipur | Jogapatti SO | 📍 845452 | Jogapatti | Post Office - PO |
| 828 | Lachhmipur | Jamunia BO | 📍 845455 | Gaunaha | Branch Post Office |
| 829 | Lachhmipur urf Baritola | Dhamaura BO | 📍 845449 | Lauriya | Branch Post Office |
| 830 | Lachhnauta | Machhargawan BO | 📍 845452 | Jogapatti | Branch Post Office |
| 831 | Lachhnauta | Dhobini BO | 📍 845453 | Lauriya | Branch Post Office |
| 832 | Lachhnauta | Lachhnauta BO | 📍 845455 | Gaunaha | Branch Post Office |
| 833 | Lachhu Chhapar Andar Bhaisahi | Pokharia Rai BO | 📍 845449 | Chanpatia | Branch Post Office |
| 834 | Ladiharwa | Haripur BO | 📍 845307 | Thakrahan | Branch Post Office |
| 835 | Lagunaha | Bagaha SO | 📍 845101 | Bagaha | Post Office - PO |
| 836 | Lagunaha | Lagunaha BO | 📍 845101 | Bagaha | Branch Post Office |
| 837 | Lagunaha | Pokharia Rai BO | 📍 845449 | Chanpatia | Branch Post Office |
| 838 | Lakar | Dhobini BO | 📍 845453 | Lauriya | Branch Post Office |
| 839 | Lakhankhor | Meghwal Mathia BO | 📍 845106 | Ramnagar | Branch Post Office |
| 840 | Lakhanpur | Lakhanpur BO | 📍 845453 | Lauriya | Branch Post Office |
| 841 | Lakhaura Nazamat | Dhankutwa BO | 📍 845449 | Chanpatia | Branch Post Office |
| 842 | Lal Bazar | Bettiah HO | 📍 845438 | Bettiah | Head Post Office - H |
| 843 | Lal Parsa | Bhawara BO | 📍 845307 | Sikta | Branch Post Office |
| 844 | Lal Saraia | Lal Saraiya BO | 📍 845454 | Majhaulia | Branch Post Office |
| 845 | Lalgarh | Lalgarh BO | 📍 845438 | Jogapatti | Branch Post Office |
| 846 | Lalgarh | Pipra Naurangia BO | 📍 845438 | Jogapatti | Branch Post Office |
| 847 | Langra | Saidpur BO | 📍 845455 | Narkatiaganj | Branch Post Office |
| 848 | Langra Barwa | Dhamaura BO | 📍 845449 | Lauriya | Branch Post Office |
| 849 | Langri | Bastha BO | 📍 845306 | Mainatanr | Branch Post Office |
| 850 | Langri | Sahadat Pur BO | 📍 845453 | Lauriya | Branch Post Office |