| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 1901 | Pachbinda | Siswan Kala BO | 📍 841236 | Siswan | Branch Post Office |
| 1902 | Pachhwari Harsar | P.Harsar BO | 📍 841233 | Daraundha | Post Office - PO |
| 1903 | Pachlakhi | Pachlakhi BO | 📍 841436 | Siwan | Branch Post Office |
| 1904 | Pachlakhi Pandey | Pachlakhi BO | 📍 841436 | Siwan | Branch Post Office |
| 1905 | Pachnerua | Chakari BO | 📍 841435 | Guthani | Branch Post Office |
| 1906 | Pachnerui | Chakari BO | 📍 841435 | Guthani | Branch Post Office |
| 1907 | Pachokhar | Pachokhar BO | 📍 841245 | Ziradei | Branch Post Office |
| 1908 | Pachpakaria Padumpatti | Kaladumra BO | 📍 841439 | Goriakothi | Branch Post Office |
| 1909 | Pachpakaria Tulsi | Kaladumra BO | 📍 841439 | Goriakothi | Branch Post Office |
| 1910 | Pachpatia | Hariharpur Kala BO | 📍 841434 | Goriakothi | Branch Post Office |
| 1911 | Pachra hata | Kaladumra BO | 📍 841439 | Goriakothi | Branch Post Office |
| 1912 | Pachrukhi | Pachrukhi SO | 📍 841241 | Pachrukhi | Post Office - PO |
| 1913 | Padari | Telkathu BO | 📍 841286 | Hasanpura | Branch Post Office |
| 1914 | Padartha | Karsar BO | 📍 841504 | Raghunathpur | Branch Post Office |
| 1915 | Padepur | Bakerganj SO | 📍 841286 | Hasanpura | Post Office - PO |
| 1916 | Padrum | Hardia BO | 📍 841404 | Barharia | Post Office - PO |
| 1917 | Pagar Kothi | Badram BO | 📍 841241 | Pachrukhi | Branch Post Office |
| 1918 | Pagurkothi | Pachrukhi SO | 📍 841241 | Pachrukhi | Post Office - PO |
| 1919 | Paharpur | Sadarpur BO | 📍 841232 | Barharia | Branch Post Office |
| 1920 | Pahlejpur | Laxmiganj BO | 📍 841439 | Goriakothi | Branch Post Office |
| 1921 | Paighambarpur | Siwan HO | 📍 841226 | Hussainganj | Head Post Office - H |
| 1922 | Paighambarpur | Khalishpur BO | 📍 841227 | Siwan | Branch Post Office |
| 1923 | Paintalis | Rachhopali BO | 📍 841427 | Barharia | Branch Post Office |
| 1924 | Pajwar | Panjwar BO | 📍 841509 | Raghunathpur | Branch Post Office |
| 1925 | Pakari | Mahuwal Mahal SO | 📍 841240 | Hasanpura | Post Office - PO |
| 1926 | Pakari ke tola | Mahuwal Mahal SO | 📍 841240 | Hasanpura | Post Office - PO |
| 1927 | Pakari Punak | Punak BO | 📍 841239 | Darauli | Branch Post Office |
| 1928 | Pakaulia | Siwan HO | 📍 841226 | Ziradei | Head Post Office - H |
| 1929 | Pakaulia | Machakna BO | 📍 841237 | Hussainganj | Branch Post Office |
| 1930 | Pakaulia | Pakwalia BO | 📍 841238 | Maharajganj | Branch Post Office |
| 1931 | Pakhrera | Sonbarsa BO | 📍 841241 | Pachrukhi | Branch Post Office |
| 1932 | Pakri | Chandparsa BO | 📍 841240 | Hasanpura | Branch Post Office |
| 1933 | Pakri | Pakri BO | 📍 841438 | Barharia | Branch Post Office |
| 1934 | Pakri Bangali | Gaushalaroad Siwan SO | 📍 841227 | Pachrukhi | Post Office - PO |
| 1935 | Pakri Makariar or Badli | Dhanuti BO | 📍 841226 | Siwan | Branch Post Office |
| 1936 | Pakri Sultan | Bhluwa BO | 📍 841404 | Barharia | Post Office - PO |
| 1937 | Pakri Sultan | Pakri BO | 📍 841438 | Barharia | Branch Post Office |
| 1938 | Pakwalia | Pakwalia BO | 📍 841238 | Daraundha | Branch Post Office |
| 1939 | Pakwaliya Dusahdh Tola | Ratanpura BO | 📍 841506 | Maharajganj | Branch Post Office |
| 1940 | Pakwaliya Koiri Tola | Ratanpura BO | 📍 841506 | Maharajganj | Branch Post Office |
| 1941 | Pakwaliya Yadav Tola | Ratanpura BO | 📍 841506 | Maharajganj | Branch Post Office |
| 1942 | Pakwalya | B.A. Pakwalia BO | 📍 841438 | Barharia | Branch Post Office |
| 1943 | Paltu Hata | Paltuhatta BO | 📍 841413 | Barharia | Branch Post Office |
| 1944 | Panchamwa | Baghauna BO | 📍 841223 | Siswan | Branch Post Office |
| 1945 | Panchamwa anganbari kendra | Baghauna BO | 📍 841223 | Siswan | Branch Post Office |
| 1946 | Panchamwa anganbari kendra No 2 | Baghauna BO | 📍 841223 | Siswan | Branch Post Office |
| 1947 | Panchayat Bhawan | Bhartpura BO | 📍 841506 | Pachrukhi | Branch Post Office |
| 1948 | Panchayat Bhawan | Saraya Sah Mohamd BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1949 | Pandapali | Tiyan BO | 📍 841231 | Andar | Branch Post Office |
| 1950 | Pandit ke Rampur | P.K.Rampur BO | 📍 841507 | Bhagwanpur Hat | Branch Post Office |