| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 2101 | Sirikantpur | Surajpura SO | 📍 802221 | Suryapura | Post Office - PO |
| 2102 | Sirisiya Bigha | Sohagi BO | 📍 821306 | Nasriganj | Branch Post Office |
| 2103 | Sirkhinda | Sirkhinda BO | 📍 802215 | Nokha | Branch Post Office |
| 2104 | Sirpalpur | Kochas SO | 📍 821112 | Kochas | Post Office - PO |
| 2105 | Sirpalpur Kirhindi | Darigaon BO | 📍 821113 | Sasaram | Branch Post Office |
| 2106 | Sirsia | Kargahar SO | 📍 821107 | Kargahar | Post Office - PO |
| 2107 | Sisirta | Sisirita BO | 📍 802217 | Nokha | Branch Post Office |
| 2108 | Sisrit | Sisirit BO | 📍 802215 | Nokha | Branch Post Office |
| 2109 | Sisrit Tola | Sisirit BO | 📍 802215 | Nokha | Branch Post Office |
| 2110 | Sita Bigha | Karwandia BO | 📍 821305 | Sasaram | Branch Post Office |
| 2111 | Sita Bigha | Shankarpuri BO | 📍 821308 | Dehri | Branch Post Office |
| 2112 | Sitalpur | Tendua BO | 📍 802215 | Nokha | Branch Post Office |
| 2113 | Sitalpur | A. Kala BO | 📍 802226 | Suryapura | Post Office - PO |
| 2114 | Siwala | A. Saraiya BO | 📍 821312 | Tilouthu | Branch Post Office |
| 2115 | Siwan | Dhanej BO | 📍 821107 | Kargahar | Branch Post Office |
| 2116 | Sobeyan | Dhawani BO | 📍 802214 | Karakat | Branch Post Office |
| 2117 | Sohan Chak | Bhitari Bandh BO | 📍 821104 | Chenari | Branch Post Office |
| 2118 | Sohasa | Barhutikala BO | 📍 821107 | Kochas | Branch Post Office |
| 2119 | Sohda | Umapur Saraiya BO | 📍 821102 | Karakat | Branch Post Office |
| 2120 | Sohda | Kachhwa SO Rohtas | 📍 821309 | Nasriganj | Post Office - PO |
| 2121 | Sohra | Sonhan BO | 📍 821101 | Nasriganj | Branch Post Office |
| 2122 | Sohwalia Khurd | Kudra SO | 📍 821108 | Kargahar | Post Office - PO |
| 2123 | Sokrauli | Kathrain BO | 📍 821108 | Kochas | Branch Post Office |
| 2124 | Sonadih | Babhni BO | 📍 802215 | Nokha | Branch Post Office |
| 2125 | Sonahar | Thanua BO | 📍 821111 | Sheosagar | Branch Post Office |
| 2126 | Sonaura | Tilouthu SO | 📍 821312 | Tilouthu | Post Office - PO |
| 2127 | Sonbarsa | Nadaon BO | 📍 802218 | Dinara | Branch Post Office |
| 2128 | Sonbarsa | Sonhan BO | 📍 821101 | Karakat | Branch Post Office |
| 2129 | Sonbarsa | Chenari SO | 📍 821104 | Chenari | Post Office - PO |
| 2130 | Sonbarsa | Deokhaira BO | 📍 821107 | Kargahar | Branch Post Office |
| 2131 | Sonbarsa | Thanua BO | 📍 821111 | Sheosagar | Branch Post Office |
| 2132 | Sonbarsha | Nadaon BO | 📍 802218 | Dinara | Branch Post Office |
| 2133 | Sondihra | Baraila BO | 📍 821111 | Sheosagar | Branch Post Office |
| 2134 | Soni | Karmaini BO | 📍 802220 | Sanjhauli | Branch Post Office |
| 2135 | Soni | Kargahar SO | 📍 821107 | Kargahar | Post Office - PO |
| 2136 | Soni Tola | Kachhwa SO Rohtas | 📍 821309 | Nasriganj | Post Office - PO |
| 2137 | Sonwarsa | Barki Kharari BO | 📍 821113 | Sasaram | Branch Post Office |
| 2138 | Sorath | Daidhan BO | 📍 821112 | Kochas | Branch Post Office |
| 2139 | Sorathi | Daidhan BO | 📍 821112 | Kochas | Branch Post Office |
| 2140 | Sosna | Goi BO | 📍 821106 | Kargahar | Branch Post Office |
| 2141 | Sotawan | Ghosia BO | 📍 802215 | Nokha | Branch Post Office |
| 2142 | Sri Bhagwan Path | Takia Bazar SO | 📍 821113 | Sasaram | Post Office - PO |
| 2143 | Sri Nagar Kusumaraha | Bisheni Kala BO | 📍 802219 | Rajpur | Branch Post Office |
| 2144 | Sri Nagar Suara Tola | Suara BO | 📍 802219 | Rajpur | Branch Post Office |
| 2145 | Sri Rampur | Pahleza BO | 📍 821305 | Dehri | Branch Post Office |
| 2146 | Sribazar | Surajpura SO | 📍 802221 | Suryapura | Post Office - PO |
| 2147 | Sripalpur | Laheri BO | 📍 821112 | Kochas | Branch Post Office |
| 2148 | Suara | Karma BO | 📍 802212 | Bikramganj | Branch Post Office |
| 2149 | Suara | Suara BO | 📍 802219 | Rajpur | Branch Post Office |
| 2150 | Suara | Pahleza BO | 📍 821305 | Dehri | Branch Post Office |