| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 1201 | Khudhnu | Belwan BO | 📍 802217 | Sasaram | Branch Post Office |
| 1202 | Khudhnu | Alampur BO | 📍 821113 | Sasaram | Branch Post Office |
| 1203 | Khudiyan | Khuria BO | 📍 821113 | Sasaram | Branch Post Office |
| 1204 | Khudrawan | Baraon Kala BO | 📍 821306 | Dehri | Branch Post Office |
| 1205 | Khudru | Khudru BO | 📍 821112 | Kochas | Branch Post Office |
| 1206 | Khujha | Dumari BO | 📍 821104 | Chenari | Branch Post Office |
| 1207 | Khurhunu | Sasaram HO | 📍 821115 | Sasaram | Head Post Office - H |
| 1208 | Khurhuria | Deokhaira BO | 📍 821107 | Kargahar | Branch Post Office |
| 1209 | Khuria BO | Khuria BO | 📍 821015 | Rohtas | Branch Post Office |
| 1210 | Khurna | Khurmabad BO | 📍 821108 | Chenari | Branch Post Office |
| 1211 | Khurnu Kalan | Sadokhar BO | 📍 821104 | Chenari | Branch Post Office |
| 1212 | Khutaha | Sanjhauli SO | 📍 802220 | Sanjhauli | Post Office - PO |
| 1213 | Khutaha | Pawani BO | 📍 821310 | Nasriganj | Branch Post Office |
| 1214 | Kinarchola | Dumari BO | 📍 821104 | Chenari | Branch Post Office |
| 1215 | Kirihiri | Kirhindi BO | 📍 821111 | Sheosagar | Branch Post Office |
| 1216 | Kishuari | Karma Pathkhaulia BO | 📍 821310 | Suryapura | Branch Post Office |
| 1217 | Kishunipur | Andore BO | 📍 802213 | Dinara | Branch Post Office |
| 1218 | Kishunpura | Saraon BO | 📍 802218 | Dinara | Branch Post Office |
| 1219 | Kishunpura | Chenari SO | 📍 821104 | Chenari | Post Office - PO |
| 1220 | Koath | Koath SO | 📍 802216 | Dawath | Post Office - PO |
| 1221 | Kochas | Kochas SO | 📍 821112 | Kochas | Post Office - PO |
| 1222 | Koidih | Hurka BO | 📍 821312 | Dehri | Branch Post Office |
| 1223 | Koiria | Saitha BO | 📍 821101 | Dinara | Branch Post Office |
| 1224 | Koiria Dih | Sasaram HO | 📍 821115 | Sasaram | Head Post Office - H |
| 1225 | Kolha | Nonhar BO | 📍 802212 | Bikramganj | Branch Post Office |
| 1226 | Kolhai Baruna | Gamhariya BO | 📍 821301 | Akorhi Gola | Branch Post Office |
| 1227 | Kon | Bhaluahi BO | 📍 802215 | Nokha | Branch Post Office |
| 1228 | Konar | Konar BO | 📍 821113 | Sasaram | Branch Post Office |
| 1229 | Koni | Ganj Bharsara BO | 📍 802218 | Dinara | Branch Post Office |
| 1230 | Koni | Sanjhauli SO | 📍 802220 | Sanjhauli | Post Office - PO |
| 1231 | Konki | Nad BO | 📍 821113 | Sasaram | Branch Post Office |
| 1232 | Kopsar | Kopsar BO | 📍 821107 | Kargahar | Branch Post Office |
| 1233 | Korar | A. Saraiya BO | 📍 821312 | Tilouthu | Branch Post Office |
| 1234 | Kori | Bhelari BO | 📍 802215 | Dinara | Branch Post Office |
| 1235 | Koriari | Kudra SO | 📍 821108 | Kargahar | Post Office - PO |
| 1236 | Kosanda | Koath SO | 📍 802216 | Dawath | Post Office - PO |
| 1237 | Kota | Chenari SO | 📍 821104 | Chenari | Post Office - PO |
| 1238 | Kota | Dighita BO | 📍 821112 | Kochas | Branch Post Office |
| 1239 | Kothara | Mokar BO | 📍 821113 | Sasaram | Branch Post Office |
| 1240 | Kothi Bigha | Amjhore Camp SO | 📍 821302 | Rohtas | Post Office - PO |
| 1241 | Koupadih | Jaipur BO | 📍 821301 | Akorhi Gola | Branch Post Office |
| 1242 | Kouwadih | Pipra BO | 📍 821107 | Kargahar | Branch Post Office |
| 1243 | Kouwadih Tola | Panapur BO | 📍 821107 | Kargahar | Branch Post Office |
| 1244 | Krari | Nad BO | 📍 821113 | Sasaram | Branch Post Office |
| 1245 | Krishnapur | Jabra BO | 📍 802215 | Nokha | Branch Post Office |
| 1246 | Kuchhila | Kuchila BO | 📍 821112 | Kochas | Branch Post Office |
| 1247 | Kudra RS (Lalapur) S.O | Kudra RS (Lalapur) S.O | 📍 821114 | Rohtas | Sub Post Office |
| 1248 | Kujhi | Siyawak BO | 📍 802219 | Rajpur | Branch Post Office |
| 1249 | Kukuraha Tola | Mednipur BO | 📍 802211 | Nasriganj | Branch Post Office |
| 1250 | Kulhariya | Gachhai BO | 📍 802214 | Karakat | Branch Post Office |