| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 101 | Bajrean | Baruhi BO | 📍 802208 | Sahar | Branch Post Office |
| 102 | Bajruha | Piania BO | 📍 802210 | Udwant Nagar | Branch Post Office |
| 103 | Bakar Nagar | Birampur BO | 📍 802314 | Koilwar | Branch Post Office |
| 104 | Bakharia | Balua BO | 📍 802130 | Arrah | Branch Post Office |
| 105 | Bakhorapur | Bakhorapur BO | 📍 802311 | Barhara | Branch Post Office |
| 106 | Bakhorapur English | Bakhorapur BO | 📍 802311 | Barhara | Branch Post Office |
| 107 | Bakhria | Chandawa SO | 📍 802312 | Arrah | Post Office - PO |
| 108 | Bakri | Karwan BO | 📍 802312 | Udwant Nagar | Branch Post Office |
| 109 | Bakula | Basantpur BO | 📍 802156 | Arrah | Branch Post Office |
| 110 | Balbandh | Balbandh BO | 📍 802203 | Garhani | Branch Post Office |
| 111 | Baligaon | Baligaon BO | 📍 802203 | Garhani | Branch Post Office |
| 112 | Balihari | Kumhaila BO | 📍 802223 | Charpokhari | Branch Post Office |
| 113 | Balua | Chakia BO | 📍 802207 | Tarari | Branch Post Office |
| 114 | Balua | Chandawa SO | 📍 802312 | Arrah | Post Office - PO |
| 115 | Balua | Daulatpur BO | 📍 802313 | Arrah | Branch Post Office |
| 116 | Balua | Benwalia SO | 📍 802351 | Barhara | Post Office - PO |
| 117 | Baluwanhi | Dalippur SO Bhojpur | 📍 802155 | Jagdishpur | Post Office - PO |
| 118 | Bamhawar | Bambhawar BO | 📍 802155 | Piro | Branch Post Office |
| 119 | Bamhnauli | Bemari BO | 📍 802154 | Shahpur | Branch Post Office |
| 120 | Banahin | Banahi BO | 📍 802183 | Behea | Branch Post Office |
| 121 | Banauli | Chasi BO | 📍 802201 | Agiaon | Branch Post Office |
| 122 | Bandha | Kalyanpur BO | 📍 802154 | Behea | Branch Post Office |
| 123 | Bankat | Bankat Sikaria BO | 📍 802183 | Behea | Branch Post Office |
| 124 | Bankat | Kamariaon BO | 📍 802183 | Behea | Branch Post Office |
| 125 | Bankat | Barnaon BO | 📍 802203 | Jagdishpur | Branch Post Office |
| 126 | Bankat | Bankat BO | 📍 802206 | Agiaon | Branch Post Office |
| 127 | Bansi Dehri | Peur BO | 📍 802208 | Sahar | Branch Post Office |
| 128 | Bansipur | Karnamepur BO | 📍 802112 | Shahpur | Branch Post Office |
| 129 | Baon Pali | Sonpura BO | 📍 802206 | Udwant Nagar | Branch Post Office |
| 130 | Bara | Khajuria BO | 📍 802156 | Arrah | Branch Post Office |
| 131 | Bara | Ramasarh BO | 📍 802164 | Sandesh | Branch Post Office |
| 132 | Bara | Barakhrauni BO | 📍 802166 | Behea | Branch Post Office |
| 133 | Bara Pokhar | Sheopurkunai BO | 📍 802158 | Jagdishpur | Branch Post Office |
| 134 | Barad Parwa | Barad Parwa BO | 📍 802158 | Jagdishpur | Branch Post Office |
| 135 | Barahra | Malaur BO | 📍 802223 | Charpokhari | Branch Post Office |
| 136 | Barahra | Barahara SO | 📍 802311 | Barhara | Post Office - PO |
| 137 | Baranhpur | Ramasarh BO | 📍 802164 | Sandesh | Branch Post Office |
| 138 | Barao | Chaturbhujibaraon BO | 📍 802159 | Piro | Branch Post Office |
| 139 | Barap | Bagwan BO | 📍 802203 | Garhani | Branch Post Office |
| 140 | Barar | Kumhaila BO | 📍 802223 | Charpokhari | Branch Post Office |
| 141 | Barar English | Kumhaila BO | 📍 802223 | Charpokhari | Branch Post Office |
| 142 | Barauli | Piru SO | 📍 802207 | Piro | Post Office - PO |
| 143 | Baraura | Agiaon Bazar SO | 📍 802202 | Piro | Post Office - PO |
| 144 | Baraura | Sheopur BO | 📍 802203 | Garhani | Branch Post Office |
| 145 | Bardiha | Harpur BO | 📍 802128 | Garhani | Branch Post Office |
| 146 | Bardiha | Jamuaon BO | 📍 802159 | Sandesh | Branch Post Office |
| 147 | Bargahi | Chhotka Sasaram BO | 📍 802157 | Udwant Nagar | Branch Post Office |
| 148 | Bargaon | Bargaon BO | 📍 802209 | Agiaon | Branch Post Office |
| 149 | Barhampur Mehdanra | Karbasin BO | 📍 802201 | Agiaon | Branch Post Office |
| 150 | Barhara | Barahara SO | 📍 802311 | Barhara | Post Office - PO |