| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 851 | Ekwari | Bishwar BO | 📍 841239 | Guthani | Branch Post Office |
| 852 | Ekwari | Jamuaon BO | 📍 841239 | Guthani | Branch Post Office |
| 853 | Elahi Chak | Raghunathpur SO Siwan | 📍 841504 | Raghunathpur | Post Office - PO |
| 854 | Elamidinpur | Shakara BO | 📍 841506 | Maharajganj | Branch Post Office |
| 855 | Emauli | Kabirpur BO | 📍 841243 | Nautan | Branch Post Office |
| 856 | Enaetchhapra | Barhria SO | 📍 841232 | Barharia | Post Office - PO |
| 857 | English | English BO | 📍 841239 | Mairwa | Branch Post Office |
| 858 | Extention of Bilak Diara | Darauli SO | 📍 841234 | Darauli | Post Office - PO |
| 859 | Fajulhi | Bishunpura Bazar BO | 📍 841239 | Ziradei | Branch Post Office |
| 860 | Fakhrudinpur | Dindayalpur BO | 📍 841506 | Barharia | Branch Post Office |
| 861 | Family court | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 862 | Faridpur | Faridpur BO | 📍 841231 | Hussainganj | Branch Post Office |
| 863 | Faridpur | Bhikhpur BO | 📍 841237 | Hussainganj | Branch Post Office |
| 864 | Fatehpur | Andar SO | 📍 841231 | Andar | Post Office - PO |
| 865 | Fatehpur | Bishunpura BO | 📍 841238 | Daraundha | Branch Post Office |
| 866 | Fazilpur | Kandhpakar BO | 📍 841287 | Andar | Branch Post Office |
| 867 | Fazilpur Deuriya | Hussainganj SO | 📍 841237 | Andar | Post Office - PO |
| 868 | Firojpur | Andar SO | 📍 841231 | Andar | Post Office - PO |
| 869 | Firozpur | Nand Pur Amwari BO | 📍 841231 | Raghunathpur | Branch Post Office |
| 870 | G B Nagar Tarwara | Tarwara SO | 📍 841506 | Pachrukhi | Post Office - PO |
| 871 | G Kothi Pachbeni | Goreakothi SO | 📍 841434 | Goriakothi | Post Office - PO |
| 872 | Gabhirar | Gabhirar SO | 📍 841509 | Raghunathpur | Post Office - PO |
| 873 | Gahilapur | Kandhpakar BO | 📍 841287 | Andar | Branch Post Office |
| 874 | Galimapur | Semaria BO | 📍 841243 | Nautan | Branch Post Office |
| 875 | Galimapur | Semaria BO | 📍 841441 | Nautan | Branch Post Office |
| 876 | Gambhir Hata | Rachhopali BO | 📍 841427 | Barharia | Branch Post Office |
| 877 | Gamharia | Gambhria BO | 📍 841241 | Pachrukhi | Branch Post Office |
| 878 | Gamhirpur | Hasua BO | 📍 841436 | Nautan | Branch Post Office |
| 879 | Gandak High Tarwara | Tarwara SO | 📍 841506 | Pachrukhi | Post Office - PO |
| 880 | Gandak Nahar Office | Tarwara SO | 📍 841506 | Pachrukhi | Post Office - PO |
| 881 | Gandharpa | Keelpur BO | 📍 841243 | Nautan | Branch Post Office |
| 882 | Gandhi maidan | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 883 | Gandhi nagar | Purandarpur BO | 📍 841439 | Goriakothi | Branch Post Office |
| 884 | Gandho Chaper | Titra BO | 📍 841245 | Ziradei | Branch Post Office |
| 885 | Gangapur | Gangpur Siswan SO | 📍 841210 | Siswan | Post Office - PO |
| 886 | Gangauli | Siwan HO | 📍 841226 | Ziradei | Head Post Office - H |
| 887 | Gangpalia | Belaon BO | 📍 841235 | Darauli | Branch Post Office |
| 888 | Gangpur siswan dhobahir par | Gangpur Siswan SO | 📍 841210 | Siswan | Post Office - PO |
| 889 | Gangpur siswan Nai basti | Gangpur Siswan SO | 📍 841210 | Siswan | Post Office - PO |
| 890 | Gangpur siswan West | Gangpur Siswan SO | 📍 841210 | Siswan | Post Office - PO |
| 891 | Gangrampur | Sahatwar BO | 📍 841439 | Goriakothi | Branch Post Office |
| 892 | Gangwa | Balaun BO | 📍 841244 | Guthani | Branch Post Office |
| 893 | Garar | Hussainganj SO | 📍 841237 | Ziradei | Post Office - PO |
| 894 | Garar | Ruiyabangra BO | 📍 841245 | Ziradei | Branch Post Office |
| 895 | Gareria | Done SO | 📍 841235 | Guthani | Post Office - PO |
| 896 | Garibganj | Sahlaur BO | 📍 841227 | Pachrukhi | Branch Post Office |
| 897 | Garwar | Draili Mathia BO | 📍 841235 | Darauli | Branch Post Office |
| 898 | Gaur | Balia BO | 📍 841506 | Maharajganj | Branch Post Office |
| 899 | Gaur | Madhopur BO | 📍 841506 | Maharajganj | Branch Post Office |
| 900 | Gaur Bujurg Utkarmik Madhya Vidyalay | Madhopur BO | 📍 841506 | Maharajganj | Branch Post Office |