| S.No | District Name | Total No. of Pincode |
|---|---|---|
| 1 | Pashchim Champaran | 0 |
| 2 | Purba Champaran | 1 |
| 3 | Sheohar * | 3 |
| 4 | Sitamarhi | 23 |
| 5 | Madhubani | 38 |
| 6 | Supaul * | 21 |
| 7 | Araria | 11 |
| 8 | Kishanganj | 6 |
| 9 | Purnia | 19 |
| 10 | Katihar | 23 |
| 11 | Madhepura | 13 |
| 12 | Saharsa | 12 |
| 13 | Darbhanga | 37 |
| 14 | Muzaffarpur | 40 |
| 15 | Gopalganj | 18 |
| 16 | Siwan | 37 |
| 17 | Saran | 46 |
| 18 | Vaishali | 30 |
| 19 | Samastipur | 35 |
| 20 | Begusarai | 28 |
| 21 | Khagaria | 13 |
| 22 | Bhagalpur | 22 |
| 23 | Banka * | 12 |
| 24 | Munger | 8 |
| 25 | Lakhisarai * | 6 |
| 26 | Sheikhpura * | 3 |
| 27 | Nalanda | 26 |
| 28 | Patna | 62 |
| 29 | Bhojpur | 35 |
| 30 | Buxar * | 27 |
| 31 | Kaimur (bhabua) * | 9 |
| 32 | Rohtas | 30 |
| 33 | Jehanabad | 15 |
| 34 | Aurangabad | 22 |
| 35 | Gaya | 35 |
| 36 | Nawada | 23 |
| 37 | Jamui * | 12 |
| 38 | East Champaran | 37 |
| 39 | West Champaran | 18 |
| 40 | Arwal | 2 |
| 41 | Purbi Champaran | 0 |