| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 2351 | Semra Buzurg | Sahpur SO | 📍 841243 | Nautan | Post Office - PO |
| 2352 | Semra Khurd | Sahpur SO | 📍 841243 | Nautan | Post Office - PO |
| 2353 | Semra Tola | Saraya Sah Mohamd BO | 📍 841506 | Goriakothi | Branch Post Office |
| 2354 | Semri | Rajanpura BO | 📍 841236 | Hasanpura | Branch Post Office |
| 2355 | Sendurkha | Sohilpatti BO | 📍 841406 | Basantpur | Branch Post Office |
| 2356 | Seni Chhapra | Lebhri BO | 📍 841239 | Mairwa | Branch Post Office |
| 2357 | Seria | Basantpur SO Siwan | 📍 841406 | Basantpur | Post Office - PO |
| 2358 | Sersaiyan | Sughri BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 2359 | sewatapur Malikan | Seotapur BO | 📍 841239 | Mairwa | Branch Post Office |
| 2360 | Sewatapur Mauje | Seotapur BO | 📍 841239 | Mairwa | Branch Post Office |
| 2361 | Sewtapur | Seotapur BO | 📍 841239 | Mairwa | Branch Post Office |
| 2362 | Shahabaz Chak | Hasanpura SO | 📍 841236 | Hasanpura | Post Office - PO |
| 2363 | Shahbazpur | Habibnagar BO | 📍 841226 | Hussainganj | Branch Post Office |
| 2364 | Shahganj | Mahrajganj SO Siwan | 📍 841238 | Maharajganj | Post Office - PO |
| 2365 | Shahpur | Sahpur SO | 📍 841243 | Nautan | Post Office - PO |
| 2366 | Shahpur | Admapur BO | 📍 841504 | Raghunathpur | Branch Post Office |
| 2367 | Shahpur | Shakara BO | 📍 841506 | Maharajganj | Branch Post Office |
| 2368 | Shahpur Mishrauli | Sahpur SO | 📍 841243 | Nautan | Post Office - PO |
| 2369 | Shahpur Misrauli | Sahpur SO | 📍 841243 | Nautan | Post Office - PO |
| 2370 | Shahtakia | Pachrukhi SO | 📍 841241 | Pachrukhi | Post Office - PO |
| 2371 | Shakra | Shiopur Sakra BO | 📍 841245 | Ziradei | Branch Post Office |
| 2372 | Shakra | Shakara BO | 📍 841506 | Maharajganj | Branch Post Office |
| 2373 | Sham Bodi | Darauli SO | 📍 841234 | Darauli | Post Office - PO |
| 2374 | Shampur | Bhantapokher BO | 📍 841226 | Siwan | Branch Post Office |
| 2375 | Shampur | Barhria SO | 📍 841232 | Barharia | Post Office - PO |
| 2376 | Shampur | Basantpur SO Siwan | 📍 841406 | Basantpur | Post Office - PO |
| 2377 | Shampur Khap | Kauria BO | 📍 841406 | Basantpur | Branch Post Office |
| 2378 | Shankarpur | Habibnagar BO | 📍 841226 | Hussainganj | Branch Post Office |
| 2379 | Shankarpur | Bardaha BO | 📍 841245 | Ziradei | Branch Post Office |
| 2380 | Shankarpur | Chakia BO | 📍 841507 | Bhagwanpur Hat | Branch Post Office |
| 2381 | Shawami Viveka Nand Colony Gandhi Maidan | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 2382 | Shekhpura | Hasanpura SO | 📍 841236 | Hasanpura | Post Office - PO |
| 2383 | Shekhpura | Sekhpura BO | 📍 841406 | Goriakothi | Branch Post Office |
| 2384 | Shekhpura | Parwan BO | 📍 841428 | Barharia | Branch Post Office |
| 2385 | Shekhpura | Chainpur BO | 📍 841439 | Goriakothi | Branch Post Office |
| 2386 | Shekhpurwa | Hasanpura SO | 📍 841236 | Hasanpura | Post Office - PO |
| 2387 | sheo pd RAi ke tola | Barhulia BO | 📍 841245 | Ziradei | Branch Post Office |
| 2388 | Sherpur | Machuta BO | 📍 841233 | Daraundha | Post Office - PO |
| 2389 | Sherpur | Chainpur BO | 📍 841439 | Goriakothi | Branch Post Office |
| 2390 | Shikuara | Semaria BO | 📍 841441 | Nautan | Branch Post Office |
| 2391 | Shikuwara | Semaria BO | 📍 841243 | Nautan | Branch Post Office |
| 2392 | Shiude | Mahrajganj SO Siwan | 📍 841238 | Maharajganj | Post Office - PO |
| 2393 | Shiurajpur | Mustfabad SO | 📍 841439 | Goriakothi | Post Office - PO |
| 2394 | Shivpur | Shiopur Sakra BO | 📍 841245 | Ziradei | Branch Post Office |
| 2395 | Shivpur Mathia | Mairwa SO | 📍 841239 | Mairwa | Post Office - PO |
| 2396 | Shriay | Baijubarhoga BO | 📍 841406 | Basantpur | Branch Post Office |
| 2397 | Siari | Chhapmathia BO | 📍 841227 | Siwan | Branch Post Office |
| 2398 | Siari | Kailgarh BO | 📍 841438 | Barharia | Branch Post Office |
| 2399 | Siari Khurd | Kailgarh BO | 📍 841438 | Barharia | Branch Post Office |
| 2400 | Sidhaul | Tetria BO | 📍 841226 | Hussainganj | Branch Post Office |