| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 1051 | Khiriarpur Sibana | Rawaich BO | 📍 803212 | Bakhtiarpur | Branch Post Office |
| 1052 | Khirodharpur | Baikathpur BO | 📍 803202 | Khusrupur | Branch Post Office |
| 1053 | Khizirpur | Fatwa S.O | 📍 803201 | Fatwah | Post Office - PO |
| 1054 | Khuba Singh Ka Tola | Athmalgola SO | 📍 803211 | Athmalgola | Post Office - PO |
| 1055 | Khuraitha | Bikram S.O | 📍 801104 | Bikram | Post Office - PO |
| 1056 | Khurrampur | Sonmai BO | 📍 804451 | Dhanarua | Branch Post Office |
| 1057 | Khushalchak | Samya Kurmichak BO | 📍 803306 | Ghoswari | Branch Post Office |
| 1058 | Khusrupur | Bhojpur BO | 📍 803202 | Khusrupur | Branch Post Office |
| 1059 | Khusrupur | Karauta BO | 📍 803202 | Khusrupur | Branch Post Office |
| 1060 | Khusrupur | Kayampur BO | 📍 803202 | Khusrupur | Branch Post Office |
| 1061 | Khusrupur | Mahkar BO | 📍 803202 | Khusrupur | Branch Post Office |
| 1062 | Khusrupur | Ramchaura BO | 📍 803202 | Khusrupur | Branch Post Office |
| 1063 | Khusrupur | Telmar BO | 📍 803202 | Khusrupur | Branch Post Office |
| 1064 | Khusrupur | Khushrupur SO | 📍 803202 | Khusrupur | Branch Post Office |
| 1065 | Khusrupur | Birpur BO | 📍 803202 | Khusrupur | Branch Post Office |
| 1066 | Khutahwa Tola | Rampur Dumra BO | 📍 803301 | Mokameh | Branch Post Office |
| 1067 | Kishunpur Tola | Dhanak Dove BO | 📍 803302 | Mokameh | Branch Post Office |
| 1068 | Kita Chauhattar | K.Chauhatter BO | 📍 801108 | Maner | Branch Post Office |
| 1069 | Kodahri | Chiksi BO | 📍 801110 | Paliganj | Branch Post Office |
| 1070 | Kohawan | Kohawan BO | 📍 803202 | Khusrupur | Branch Post Office |
| 1071 | Kolhar | Fatwa S.O | 📍 803201 | Fatwah | Post Office - PO |
| 1072 | Kondi Road | Barh Rs SO | 📍 803214 | Barh | Post Office - PO |
| 1073 | Kopa | Singhara BO | 📍 801102 | Dulhin Bazar | Branch Post Office |
| 1074 | Kopa Khurd | Naubatpur SO | 📍 801109 | Naubatpur | Post Office - PO |
| 1075 | Kopakalan | Naubatpur SO | 📍 801109 | Naubatpur | Post Office - PO |
| 1076 | Koraiya | Jamui BO | 📍 801102 | Dulhin Bazar | Branch Post Office |
| 1077 | Korari | Korari BO | 📍 803110 | Belchhi | Branch Post Office |
| 1078 | Korarri | Korari BO | 📍 803110 | Belchhi | Branch Post Office |
| 1079 | Korawan | Korawan BO | 📍 801109 | Naubatpur | Branch Post Office |
| 1080 | Koriawan | Sorampur BO | 📍 801505 | Phulwari | Branch Post Office |
| 1081 | Koriawan | Hansadih BO | 📍 804452 | Masaurhi | Branch Post Office |
| 1082 | Korji | Kurji Md. Pur BO | 📍 801105 | Phulwari | Post Office - PO |
| 1083 | Korra | Faridpur BO | 📍 801113 | Phulwari | Branch Post Office |
| 1084 | Korra | Korra BO | 📍 804406 | Paliganj | Branch Post Office |
| 1085 | Kosut | Kosut BO | 📍 804452 | Dhanarua | Branch Post Office |
| 1086 | Kothawan | Khagaul S.O | 📍 801105 | Dinapur-Cum-Khagaul | Post Office - PO |
| 1087 | Kothia | Khagaul S.O | 📍 801105 | Dinapur-Cum-Khagaul | Post Office - PO |
| 1088 | Kothia | Kurji Md. Pur BO | 📍 801105 | Naubatpur | Post Office - PO |
| 1089 | Krishna Tola | Maranchi BO | 📍 803301 | Mokameh | Branch Post Office |
| 1090 | Kudihra | S.P Imamganj SO | 📍 804426 | Paliganj | Branch Post Office |
| 1091 | Kujawan | Kunjwan BO | 📍 801103 | Bihta | Branch Post Office |
| 1092 | Kumhar Toli | Malpur BO | 📍 803301 | Mokameh | Branch Post Office |
| 1093 | Kumhar toli Pandarak | Pandarak SO | 📍 803221 | Pandarak | Post Office - PO |
| 1094 | Kumhraura | Darveshpur BO | 📍 803213 | Belchhi | Branch Post Office |
| 1095 | Kundi | Kondi BO | 📍 803214 | Pandarak | Branch Post Office |
| 1096 | Kura | Punpun S.O | 📍 804453 | Sampatchak | Post Office - PO |
| 1097 | Kurkuri | Kurkuri BO | 📍 801110 | Paliganj | Branch Post Office |
| 1098 | Kurtha | Baikathpur BO | 📍 803202 | Khusrupur | Branch Post Office |
| 1099 | Kurthaur | Kurthaul BO | 📍 804453 | Phulwari | Branch Post Office |
| 1100 | Kutlupur | Bahpura BO | 📍 801103 | Bihta | Branch Post Office |