| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 301 | Chandaili Milik | Balla BO | 📍 854204 | Bhawanipur | Branch Post Office |
| 302 | Chandan tola | Khuskibagh SO | 📍 854305 | Purnia East | Post Office - PO |
| 303 | Chandargaon | Khokha BO | 📍 854304 | Amour | Branch Post Office |
| 304 | Chandargaon | Khoksa BO | 📍 854315 | Baisi | Branch Post Office |
| 305 | Chandargaon | Sadipur Butha BO | 📍 854315 | Baisi | Branch Post Office |
| 306 | Chandargaon | Koskapur BO | 📍 854318 | Baisi | Branch Post Office |
| 307 | Chandel | Dhusmalhat BO | 📍 855107 | Baisa | Branch Post Office |
| 308 | Chandi | Ranipatra SO | 📍 854337 | Purnia East | Post Office - PO |
| 309 | Chandpur Bhagha | Banmankhi SO | 📍 854202 | Banmankhi | Post Office - PO |
| 310 | Chandpur Bhagha Milik | Banmankhi SO | 📍 854202 | Banmankhi | Post Office - PO |
| 311 | Chandrahi | Chandrahi BO | 📍 854205 | Dhamdaha | Branch Post Office |
| 312 | Chanduar | Kuttigola BO | 📍 855107 | Baisa | Branch Post Office |
| 313 | Chanki | Baisi SO | 📍 854315 | Baisi | Post Office - PO |
| 314 | Channi | Rautahat BO | 📍 854315 | Baisa | Branch Post Office |
| 315 | Chanpi | Mahalbari BO | 📍 854326 | Dagarua | Branch Post Office |
| 316 | Chapahari | Chapahari BO | 📍 854101 | Rupauli | Branch Post Office |
| 317 | Chapai | Gangali BO | 📍 854303 | Krityanand Nagar | Branch Post Office |
| 318 | Chapai Sham Milik | Gangali BO | 📍 854303 | Krityanand Nagar | Branch Post Office |
| 319 | Chapaso | Angarhat BO | 📍 855115 | Baisa | Branch Post Office |
| 320 | Charaloa | Dhusmalhat BO | 📍 855107 | Baisa | Branch Post Office |
| 321 | Charmara | Sadipur Butha BO | 📍 854315 | Baisi | Branch Post Office |
| 322 | Chatian | Sadipur Butha BO | 📍 854315 | Baisi | Branch Post Office |
| 323 | Chatra | Dagarua Hat BO | 📍 854326 | Dagarua | Branch Post Office |
| 324 | Chauka | Chanka BO | 📍 854304 | Srinagar | Branch Post Office |
| 325 | Chauni | Sadipur Butha BO | 📍 854315 | Baisi | Branch Post Office |
| 326 | Chauni Arazi | Sadipur Butha BO | 📍 854315 | Baisi | Branch Post Office |
| 327 | Chethariapir Badh | Barhari BO | 📍 854204 | Bhawanipur | Branch Post Office |
| 328 | Chhapraili | Baraidagah BO | 📍 854330 | Amour | Branch Post Office |
| 329 | Chhatia | Bhogabhatgama BO | 📍 854337 | Purnia East | Branch Post Office |
| 330 | Chikni | Parasmani BO | 📍 854306 | Dhamdaha | Branch Post Office |
| 331 | Chikni | Dagarua Hat BO | 📍 854326 | Dagarua | Branch Post Office |
| 332 | Chilhani | Sirsi BO | 📍 855107 | Baisa | Branch Post Office |
| 333 | Chilhna | Angarhat BO | 📍 855115 | Baisa | Branch Post Office |
| 334 | Chiraia | Charaiya BO | 📍 854315 | Baisi | Branch Post Office |
| 335 | Chitragupta nagar | Purnea Polyticnic SO | 📍 854303 | Purnia East | Post Office - PO |
| 336 | Choncha | Charaiya BO | 📍 854315 | Baisi | Branch Post Office |
| 337 | Chopar | Piyajee BO | 📍 855107 | Baisa | Branch Post Office |
| 338 | Chopara | Asja Mobaiya BO | 📍 854315 | Baisi | Branch Post Office |
| 339 | Chopra | Dagarua Hat BO | 📍 854326 | Dagarua | Branch Post Office |
| 340 | Chopra Ramnagar | Chopra Ram Nagar SO | 📍 854102 | Banmankhi | Post Office - PO |
| 341 | Chunamari | Sirsi BO | 📍 855107 | Baisa | Branch Post Office |
| 342 | Chunapur Road | Purnea Chowk SO | 📍 854304 | Purnia East | Post Office - PO |
| 343 | Cinghia Bhagta | Singhia BO | 📍 855107 | Srinagar | Branch Post Office |
| 344 | Co-Opretive bank | Dhamdaha SO | 📍 854205 | Dhamdaha | Post Office - PO |
| 345 | College Chowk | Kasba SO Purnia | 📍 854330 | Kasba | Post Office - PO |
| 346 | Dabaili Biswaspur | Baraidagah BO | 📍 854330 | Kasba | Branch Post Office |
| 347 | Dadaur | Bhogabhatgama BO | 📍 854337 | Purnia East | Branch Post Office |
| 348 | Dagarua | Dagarua Hat BO | 📍 854326 | Dagarua | Branch Post Office |
| 349 | Dahuabari | Tolikola BO | 📍 854330 | Amour | Branch Post Office |
| 350 | Dakaiha | Dhamdaha SO | 📍 854205 | Dhamdaha | Post Office - PO |