| Post office | Katarmala B.O |
| Pin code | 851130 |
| Office type | B.O |
| Taluk / city | Begusarai |
| District name | Begusarai |
| State name | Bihar |
| Delivery status | Delivery |
| Division name | Begusarai |
| Region name | Muzaffarpur |
| Circle name | Bihar |
| Related sub office | Naokothi S.O |
| Related head office | Begusarai H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 851130 | Chhatauna B.O | Begusarai | Begusarai | Bihar |
| 851130 | Hasanpur B.O | Begusarai | Begusarai | Bihar |
| 851130 | Katarmala B.O | Begusarai | Begusarai | Bihar |
| 851130 | Naokothi S.O | Begusarai | Begusarai | Bihar |
| 851130 | Rajakpur B.O | Begusarai | Begusarai | Bihar |
| 851130 | Sisauni Kothi B.O | Begusarai | Begusarai | Bihar |