| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 651 | Chilamarwa | Belauri BO | 📍 841239 | Guthani | Branch Post Office |
| 652 | Chintamanpur | K.T.Bharouli BO | 📍 841404 | Daraundha | Post Office - PO |
| 653 | Chira | Gayaspur BO | 📍 841210 | Siswan | Branch Post Office |
| 654 | Chiraiyatola | Kolhua BO | 📍 841233 | Daraundha | Branch Post Office |
| 655 | Chiraua | Belaur BO | 📍 841239 | Guthani | Branch Post Office |
| 656 | Chit Bisraon | Sematar BO | 📍 841239 | Guthani | Branch Post Office |
| 657 | Chitakhal | Chitakhal BO | 📍 841435 | Guthani | Branch Post Office |
| 658 | Chitaur | Jaijore BO | 📍 841231 | Andar | Branch Post Office |
| 659 | Chithai | Goreakothi SO | 📍 841434 | Goriakothi | Post Office - PO |
| 660 | Chitmath | Barkamanjha BO | 📍 841243 | Mairwa | Branch Post Office |
| 661 | Chitmath | Semaria BO | 📍 841243 | Nautan | Branch Post Office |
| 662 | chiyasi | Banthu Sriram BO | 📍 841245 | Ziradei | Branch Post Office |
| 663 | Chokmunda | Bhagwanpur Hat SO | 📍 841408 | Bhagwanpur Hat | Post Office - PO |
| 664 | Choli Gethian | Sughri BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 665 | Chorauli | Chorauli BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 666 | Chorauli Banwe | Chorauli BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 667 | Chorbharia | Talli BO | 📍 841239 | Guthani | Branch Post Office |
| 668 | Chorma | Chorma BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 669 | Chorman | Chorma BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 670 | Chungulpura | Nandamura BO | 📍 841203 | Siswan | Branch Post Office |
| 671 | Chup Chupwa | Mairwa SO | 📍 841239 | Mairwa | Post Office - PO |
| 672 | Churihar Tola | Saraya Sah Mohamd BO | 📍 841506 | Goriakothi | Branch Post Office |
| 673 | Cimuma Road | Basantpur SO Siwan | 📍 841406 | Basantpur | Post Office - PO |
| 674 | civil court | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 675 | co Opp bank ltd | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 676 | Coprative Bank Chaukihasan | Chaukihasan BO | 📍 841506 | Barharia | Branch Post Office |
| 677 | D C F siwan | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 678 | D D C office | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 679 | D K Sarangpur | Shakara BO | 📍 841506 | Maharajganj | Branch Post Office |
| 680 | D M office | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 681 | D S E office | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 682 | Dabachu | Dabchhu BO | 📍 841420 | Lakri Nabiganj | Branch Post Office |
| 683 | Dabchhu | Dabchhu BO | 📍 841420 | Lakri Nabiganj | Branch Post Office |
| 684 | Dachin Tola | Saraya Sah Mohamd BO | 📍 841506 | Goriakothi | Branch Post Office |
| 685 | Dagri Mathia | Goreakothi SO | 📍 841434 | Goriakothi | Post Office - PO |
| 686 | Dahkani | Chandparsa BO | 📍 841240 | Daraundha | Branch Post Office |
| 687 | Dakhin Tola | Harihans BO | 📍 841286 | Hussainganj | Branch Post Office |
| 688 | Dakhin Tola BHawrajpur | Bhwrajpur BO | 📍 841231 | Andar | Post Office - PO |
| 689 | Dakhin Tola Chaukihasan | Chaukihasan BO | 📍 841506 | Barharia | Branch Post Office |
| 690 | Dalparpur | Pipra BO | 📍 841244 | Maharajganj | Branch Post Office |
| 691 | Dalpatpur | Takipur SO | 📍 841244 | Maharajganj | Post Office - PO |
| 692 | Dalshi Tola Mathia | Goreakothi SO | 📍 841434 | Goriakothi | Post Office - PO |
| 693 | Damodra | Guthni SO | 📍 841435 | Guthani | Post Office - PO |
| 694 | Danga Hatta | Madhopur BO | 📍 841413 | Barharia | Branch Post Office |
| 695 | Dangari Mathia | Goreakothi SO | 📍 841434 | Goriakothi | Post Office - PO |
| 696 | Daniayl-pur | Dindayalpur BO | 📍 841506 | Barharia | Branch Post Office |
| 697 | Danraila | Daraila BO | 📍 841239 | Guthani | Branch Post Office |
| 698 | Dapani | Bagaura SO | 📍 841404 | Daraundha | Post Office - PO |
| 699 | Daraili | Draili Mathia BO | 📍 841235 | Darauli | Branch Post Office |
| 700 | Darauli | Darauli SO | 📍 841234 | Darauli | Post Office - PO |