| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 1851 | Nawatola | Bhikhpur BO | 📍 841408 | Bhagwanpur Hat | Branch Post Office |
| 1852 | Nawka Tola | Gayaspur BO | 📍 841210 | Siswan | Branch Post Office |
| 1853 | Nawka Tola | Mairwa SO | 📍 841239 | Mairwa | Post Office - PO |
| 1854 | Nawka Tola Chachopali | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1855 | Nawka Tola Paschmi | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1856 | Nawka Tola Purwari | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1857 | Naya Gaon | Chainpur SO Siwan | 📍 841203 | Siswan | Post Office - PO |
| 1858 | Naya Prathmik Vidyalay Tola | Pipra Naryan BO | 📍 841506 | Pachrukhi | Branch Post Office |
| 1859 | Naya Prathmit VIdyalay Gulab Bag | Bhartpura BO | 📍 841506 | Pachrukhi | Branch Post Office |
| 1860 | Nayanpura | Nainpura BO | 📍 841241 | Pachrukhi | Branch Post Office |
| 1861 | Nepura | Dumrahar BO | 📍 841435 | Darauli | Branch Post Office |
| 1862 | Neruee | B.P.Ekderwsa BO | 📍 841243 | Nautan | Branch Post Office |
| 1863 | Netwar | Belaon BO | 📍 841235 | Darauli | Branch Post Office |
| 1864 | New Prathmik Vidyalay Bangra | Pipra Naryan BO | 📍 841506 | Pachrukhi | Branch Post Office |
| 1865 | New Rajkiya Madhya Vidyalay Chaukihasan | Chaukihasan BO | 📍 841506 | Barharia | Branch Post Office |
| 1866 | Newari | Newari BO | 📍 841509 | Raghunathpur | Branch Post Office |
| 1867 | Nigja | Nand Pur Amwari BO | 📍 841231 | Raghunathpur | Branch Post Office |
| 1868 | Nikhati Tola | Bakerganj SO | 📍 841286 | Hasanpura | Post Office - PO |
| 1869 | Nikhti Kalan | Raghunathpur SO Siwan | 📍 841504 | Raghunathpur | Post Office - PO |
| 1870 | Nikhti Khurd | Raghunathpur SO Siwan | 📍 841504 | Raghunathpur | Post Office - PO |
| 1871 | Nima Dih | Admapur BO | 📍 841504 | Raghunathpur | Branch Post Office |
| 1872 | Nirala Nagar | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 1873 | Nirkhapur | Gayaspur BO | 📍 841210 | Siswan | Branch Post Office |
| 1874 | Nirkhi Chhapra | Madhopur BO | 📍 841232 | Barharia | Branch Post Office |
| 1875 | Nirmal Nagai | Ramgarh BO | 📍 841203 | Siswan | Branch Post Office |
| 1876 | Niyamatpur | Purandarpur BO | 📍 841439 | Goriakothi | Branch Post Office |
| 1877 | Nizampur | Sahlaur BO | 📍 841227 | Pachrukhi | Branch Post Office |
| 1878 | Nizampur | Rampur Ke Tola BO | 📍 841236 | Hasanpura | Branch Post Office |
| 1879 | Nonia | Noniapatti BO | 📍 841210 | Siswan | Branch Post Office |
| 1880 | Nonia tola | English BO | 📍 841239 | Mairwa | Branch Post Office |
| 1881 | Nonia Tola | Kandhpakar BO | 📍 841287 | Andar | Branch Post Office |
| 1882 | Noniapatti | Noniapatti BO | 📍 841210 | Siswan | Branch Post Office |
| 1883 | Noniatola | Mustfabad SO | 📍 841439 | Goriakothi | Post Office - PO |
| 1884 | Noniya Tola Tarwara | Tarwara SO | 📍 841506 | Pachrukhi | Post Office - PO |
| 1885 | Nosopur Sraiya | Babhanbara BO | 📍 841506 | Barharia | Branch Post Office |
| 1886 | Nosopur Sraiya Mauje | Babhanbara BO | 📍 841506 | Barharia | Branch Post Office |
| 1887 | Nosopur Sraiya Sekh Tola | Babhanbara BO | 📍 841506 | Barharia | Branch Post Office |
| 1888 | Nuruddinpur | Barhni BO | 📍 841227 | Pachrukhi | Branch Post Office |
| 1889 | Odakpur | Raghunathpur SO Siwan | 📍 841504 | Raghunathpur | Post Office - PO |
| 1890 | Odikhor | Tenua BO | 📍 841435 | Guthani | Branch Post Office |
| 1891 | Oini | Tariwani BO | 📍 841235 | Darauli | Branch Post Office |
| 1892 | Olia | Belaur BO | 📍 841239 | Guthani | Branch Post Office |
| 1893 | Orma | Benusar BO | 📍 841227 | Siwan | Branch Post Office |
| 1894 | Orma Makund | Hakam BO | 📍 841227 | Siwan | Branch Post Office |
| 1895 | Orma Nayka Tola | Benusar BO | 📍 841227 | Siwan | Branch Post Office |
| 1896 | Pachamuwa | Ramgarh BO | 📍 841203 | Siswan | Branch Post Office |
| 1897 | Pachanerul | Talli BO | 📍 841239 | Guthani | Branch Post Office |
| 1898 | Pachbarwa | Nadiwan BO | 📍 841231 | Raghunathpur | Branch Post Office |
| 1899 | Pachbenia | Kashila BO | 📍 841287 | Andar | Branch Post Office |
| 1900 | Pachbhinda | Hasanpura SO | 📍 841236 | Siswan | Post Office - PO |