| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 201 | Bangra | Ruiyabangra BO | 📍 841245 | Ziradei | Branch Post Office |
| 202 | Bangra | Titra BO | 📍 841245 | Ziradei | Branch Post Office |
| 203 | Bangra | Dabchhu BO | 📍 841420 | Lakri Nabiganj | Branch Post Office |
| 204 | Bangra | Raghunathpur SO Siwan | 📍 841504 | Raghunathpur | Post Office - PO |
| 205 | Bangra | Dindayalpur BO | 📍 841506 | Barharia | Branch Post Office |
| 206 | Bangra Buzurg | U.R. Bangra BO | 📍 841428 | Barharia | Branch Post Office |
| 207 | Bangra ke Tola | Ruiyabangra BO | 📍 841245 | Ziradei | Branch Post Office |
| 208 | Bangra Sirikant | Pipra Naryan BO | 📍 841506 | Pachrukhi | Branch Post Office |
| 209 | Bangra Tola Chaukihasan | Chaukihasan BO | 📍 841506 | Barharia | Branch Post Office |
| 210 | Banjari Naya Tola | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 211 | Banjari Road | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 212 | Banjari Road Naya Basti | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 213 | Banjariya | Pachrukhi SO | 📍 841241 | Pachrukhi | Post Office - PO |
| 214 | Bankajua | Chorma BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 215 | Bankamore | Sirisia BO | 📍 841413 | Nautan | Branch Post Office |
| 216 | Bankat | Bhagwanpur Hat SO | 📍 841408 | Bhagwanpur Hat | Post Office - PO |
| 217 | Bankat | Bankat BO | 📍 841422 | Bhagwanpur Hat | Branch Post Office |
| 218 | Bankat Main Chak | Raghunathpur SO Siwan | 📍 841504 | Raghunathpur | Post Office - PO |
| 219 | Bankata | Bankat BO | 📍 841422 | Bhagwanpur Hat | Branch Post Office |
| 220 | Banpura | Sadiha BO | 📍 841507 | Bhagwanpur Hat | Branch Post Office |
| 221 | Banri Sarai | Aranda BO | 📍 841236 | Hasanpura | Branch Post Office |
| 222 | Bansohi | Kherwa BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 223 | Bansohi Derapar | Kherwa BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 224 | Bansohi Khurd | Kherwa BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 225 | Bansopali | Basopali BO | 📍 841227 | Siwan | Branch Post Office |
| 226 | Banthu Salona | Banthu Sriram BO | 📍 841245 | Ziradei | Branch Post Office |
| 227 | Banthu Sriram | Banthu Sriram BO | 📍 841245 | Ziradei | Branch Post Office |
| 228 | Banthu Sriram | Narendrapur SO | 📍 841446 | Ziradei | Post Office - PO |
| 229 | Bar association | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 230 | Bara | Ramnagar BO | 📍 841504 | Raghunathpur | Branch Post Office |
| 231 | Bara Shikuara | Semaria BO | 📍 841441 | Nautan | Branch Post Office |
| 232 | Baraham Tola | Karanpura BO | 📍 841506 | Goriakothi | Branch Post Office |
| 233 | Barahani | Barhni BO | 📍 841227 | Pachrukhi | Branch Post Office |
| 234 | Barahi tola | Mustfabad SO | 📍 841439 | Goriakothi | Post Office - PO |
| 235 | Barahia tola | Siktia BO | 📍 841244 | Maharajganj | Branch Post Office |
| 236 | Barahpur | Barhria SO | 📍 841232 | Barharia | Post Office - PO |
| 237 | Barai Patti | Chhapmathia BO | 📍 841227 | Siwan | Branch Post Office |
| 238 | Baraipatti | Sahpur SO | 📍 841243 | Nautan | Post Office - PO |
| 239 | Baraipur | Nand Pur Amwari BO | 📍 841231 | Raghunathpur | Branch Post Office |
| 240 | Barakagaon BO | Barakagaon BO | 📍 841228 | Siwan | Branch Post Office |
| 241 | Baramh Asthan | Bhikhpur BO | 📍 841408 | Bhagwanpur Hat | Branch Post Office |
| 242 | Bararam | Badram BO | 📍 841241 | Hussainganj | Branch Post Office |
| 243 | Barari | Marachhi BO | 📍 841434 | Goriakothi | Branch Post Office |
| 244 | Barari | Mustfabad SO | 📍 841439 | Goriakothi | Post Office - PO |
| 245 | Barari | Sani Basantpur BO | 📍 841439 | Goriakothi | Branch Post Office |
| 246 | Barasara | Barhria SO | 📍 841232 | Barharia | Post Office - PO |
| 247 | Baraso | Anugrhnagar BO | 📍 841239 | Mairwa | Branch Post Office |
| 248 | Barauli tola | Amarpur BO | 📍 841234 | Darauli | Branch Post Office |
| 249 | Barauna | Noniapatti BO | 📍 841210 | Siswan | Branch Post Office |
| 250 | Bardaha | Bardaha BO | 📍 841245 | Ziradei | Branch Post Office |