| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 51 | Babhanganwan | Babhangama BO | 📍 851131 | Barauni | Branch Post Office |
| 52 | Bachhwara | Bachhawara SO | 📍 851111 | Bachhwara | Post Office - PO |
| 53 | Bad Bakhadda | Chhourahi BO | 📍 848202 | Chhorahi | Branch Post Office |
| 54 | Badalpura | Badalpura BO | 📍 851129 | Begusarai | Branch Post Office |
| 55 | Badh Kamrauli | Chhourahi BO | 📍 848202 | Chhorahi | Branch Post Office |
| 56 | Badh Mirzapur | Mirzapurchand BO | 📍 851112 | Barauni | Branch Post Office |
| 57 | Badshahpur | Mirzapur Banduar SO | 📍 851129 | Shamho Akha Kurha | Post Office - PO |
| 58 | Bagban | Mohanpur BO | 📍 848201 | Bakhri | Branch Post Office |
| 59 | Bagdobh | Bagdobh BO | 📍 851129 | Matihani | Branch Post Office |
| 60 | Baghi | Suhird Nagar SO | 📍 851218 | Begusarai | Post Office - PO |
| 61 | Baghras | Bagras BO | 📍 848201 | Bhagwanpur | Branch Post Office |
| 62 | Baghras Hari Singh | Bagras BO | 📍 848201 | Bakhri | Branch Post Office |
| 63 | Baghras than Singh | Naokothi SO | 📍 851130 | Naokothi | Post Office - PO |
| 64 | Baghrasa | Barauni SO | 📍 851112 | Bhagwanpur | Post Office - PO |
| 65 | Bagwara | Laruara BO | 📍 851218 | Begusarai | Branch Post Office |
| 66 | Bahadurpur | Rajakpur BO | 📍 851130 | Naokothi | Branch Post Office |
| 67 | Bahauddinpur | Lakhminia SO | 📍 851211 | Balia | Post Office - PO |
| 68 | Bahbalpur | Jokia BO | 📍 851127 | Birpur | Branch Post Office |
| 69 | Bahdarpur | Dhabauli BO | 📍 851129 | Begusarai | Branch Post Office |
| 70 | Bahor Chak | Chak Hamid BO | 📍 848201 | Bakhri | Branch Post Office |
| 71 | Bahrampur | Naipur BO | 📍 851128 | Bachhwara | Branch Post Office |
| 72 | Bahuara | Khagaria Mukhya Dakghar SO | 📍 851204 | Bakhri | Post Office - PO |
| 73 | Bairwa | Sakarpura SO | 📍 848203 | Bakhri | Post Office - PO |
| 74 | Bakhadda | Chhourahi BO | 📍 848202 | Chhorahi | Branch Post Office |
| 75 | Bakhadda | Badalpura BO | 📍 851129 | Matihani | Branch Post Office |
| 76 | Bakhda | Bakhadda BO | 📍 851217 | Sahebpur Kamal | Branch Post Office |
| 77 | Bakhri | Parihara BO | 📍 848201 | Bakhri | Branch Post Office |
| 78 | Bakhri | B.Bazar SO | 📍 848201 | Bakhri | Branch Post Office |
| 79 | Bala Chak | Sadanandpur BO | 📍 851211 | Balia | Branch Post Office |
| 80 | Balahpur | Balahpur BO | 📍 851129 | Matihani | Branch Post Office |
| 81 | Balbhadarban | Rani BO | 📍 851111 | Bachhwara | Branch Post Office |
| 82 | Balia | Ballia Bazar BO | 📍 851211 | Balia | Branch Post Office |
| 83 | Balia | Lakhminia SO | 📍 851211 | Balia | Post Office - PO |
| 84 | Balia Buzurg | Lakhminia SO | 📍 851211 | Balia | Post Office - PO |
| 85 | Balia Lakhminian | Lakhminia Bazar BO | 📍 851211 | Balia | Branch Post Office |
| 86 | Bandwar | Banduar BO | 📍 851131 | Begusarai | Branch Post Office |
| 87 | Banhara | Khizirchak BO | 📍 851112 | Teghra | Branch Post Office |
| 88 | Bank | Bank BO | 📍 851211 | Dandari | Branch Post Office |
| 89 | Banwaripur | Banwaripur BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 90 | Bara | Tarabariarpur BO | 📍 848202 | Khudabandpur | Branch Post Office |
| 91 | Baraipura | Baraipura BO | 📍 848204 | Chhorahi | Branch Post Office |
| 92 | Baraipura | Birpur BO | 📍 851127 | Birpur | Branch Post Office |
| 93 | Barauni | Barauni SO | 📍 851112 | Barauni | Post Office - PO |
| 94 | Barauni | Tilrath BO | 📍 851112 | Barauni | Branch Post Office |
| 95 | Barauni 1 | B.Deorhi SO | 📍 851113 | Teghra | Branch Post Office |
| 96 | Barauni 2 | B.Deorhi SO | 📍 851113 | Teghra | Branch Post Office |
| 97 | Bari Sanwak | Sankh BO | 📍 851131 | Begusarai | Branch Post Office |
| 98 | Bariarpur | Bariarpurtola Sirsi BO | 📍 848202 | Khudabandpur | Branch Post Office |
| 99 | Bariarpur | Baraipura BO | 📍 848204 | Garhpura | Branch Post Office |
| 100 | Bariarpur | Rahatpur BO | 📍 851211 | Balia | Branch Post Office |