| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 1251 | Kanahar | Babhanbara BO | 📍 841506 | Barharia | Branch Post Office |
| 1252 | Kanaila | Kanhauli BO | 📍 841235 | Darauli | Branch Post Office |
| 1253 | Kandhauli | Bhikhpur Bhgwanpur BO | 📍 841236 | Raghunathpur | Branch Post Office |
| 1254 | Kandhpakar | Kandhpakar BO | 📍 841287 | Andar | Branch Post Office |
| 1255 | Kanhar Ahir Tola Babhabara | Babhanbara BO | 📍 841506 | Barharia | Branch Post Office |
| 1256 | Kanhar Babu Tola Babhabara | Babhanbara BO | 📍 841506 | Barharia | Branch Post Office |
| 1257 | Kanhar Jolha Tola Babhabara | Babhanbara BO | 📍 841506 | Barharia | Branch Post Office |
| 1258 | Kanhaui | Bhluwa BO | 📍 841404 | Barharia | Post Office - PO |
| 1259 | Kanhauli | Barhria SO | 📍 841232 | Barharia | Post Office - PO |
| 1260 | Kanhauli | Kanhauli BO | 📍 841235 | Darauli | Branch Post Office |
| 1261 | Kanhauli | Bhikhpur Bhgwanpur BO | 📍 841236 | Siswan | Branch Post Office |
| 1262 | Kanhauli | Hussaipurnand BO | 📍 841406 | Basantpur | Branch Post Office |
| 1263 | Kanhpakar | Kandhpakar BO | 📍 841287 | Andar | Branch Post Office |
| 1264 | Kanhradhari Haltamah | Raghunathpur SO Siwan | 📍 841504 | Raghunathpur | Post Office - PO |
| 1265 | Kanrsar | Karsar BO | 📍 841504 | Raghunathpur | Branch Post Office |
| 1266 | Kaolta | Bargaon BO | 📍 841239 | Mairwa | Branch Post Office |
| 1267 | Kapiahata | Kaladumra BO | 📍 841439 | Goriakothi | Branch Post Office |
| 1268 | Kapripur | Rajapatti SO | 📍 841420 | Lakri Nabiganj | Post Office - PO |
| 1269 | Karahi Kalan | Basantpur SO Siwan | 📍 841406 | Basantpur | Post Office - PO |
| 1270 | Karahi Khurd | Basantpur SO Siwan | 📍 841406 | Basantpur | Post Office - PO |
| 1271 | Karahi Mathia | Basantpur SO Siwan | 📍 841406 | Basantpur | Post Office - PO |
| 1272 | Karamdaha | Belaur BO | 📍 841239 | Guthani | Branch Post Office |
| 1273 | Karanpura | Basopali BO | 📍 841227 | Siwan | Branch Post Office |
| 1274 | Karanpura | Done SO | 📍 841235 | Darauli | Post Office - PO |
| 1275 | Karanpura | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1276 | Karanpura Bazar | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1277 | Karanpura Mathia | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1278 | Karanpura Mauje | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1279 | Karanpura Patel Nagar | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1280 | Kararua | Sarwe BO | 📍 841227 | Siwan | Branch Post Office |
| 1281 | Kararuwa | Pachlakhi BO | 📍 841436 | Siwan | Branch Post Office |
| 1282 | Karbala Bazar | Koerigawan BO | 📍 841232 | Barharia | Branch Post Office |
| 1283 | Karcholia | Basantpur SO Siwan | 📍 841406 | Basantpur | Post Office - PO |
| 1284 | Kareji | Belaur BO | 📍 841239 | Guthani | Branch Post Office |
| 1285 | Karhanu | Barheya BO | 📍 841226 | Hussainganj | Branch Post Office |
| 1286 | Karhi Sampur | Hussaipurnand BO | 📍 841406 | Basantpur | Branch Post Office |
| 1287 | Karhi Tola | Hussaipurnand BO | 📍 841406 | Basantpur | Branch Post Office |
| 1288 | Karjania | Bargaon BO | 📍 841239 | Mairwa | Branch Post Office |
| 1289 | Karjaria | Bargaon BO | 📍 841239 | Mairwa | Branch Post Office |
| 1290 | Karmadah | Talli BO | 📍 841239 | Guthani | Branch Post Office |
| 1291 | Karmaha | Amarpur BO | 📍 841423 | Darauli | Branch Post Office |
| 1292 | Karmansi | Aranda BO | 📍 841236 | Hasanpura | Branch Post Office |
| 1293 | Karmaul | Asaon SO | 📍 841287 | Darauli | Post Office - PO |
| 1294 | Karmoul | Asaon SO | 📍 841287 | Andar | Post Office - PO |
| 1295 | Karnai | Draili Mathia BO | 📍 841235 | Darauli | Branch Post Office |
| 1296 | Karnaiya | Bakerganj SO | 📍 841286 | Hasanpura | Post Office - PO |
| 1297 | Karnpura Dobi Tola | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1298 | Karnpura harijan Tola | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 1299 | Karom | Krom BO | 📍 841239 | Darauli | Branch Post Office |
| 1300 | Karom Mauje | Krom BO | 📍 841239 | Darauli | Branch Post Office |