Kathalia BO is the primary post office registered under PIN code 847123 in Darbhanga, Bihar. This code sits within the Eastern Postal Region, with 6 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Kathalia BO | BO | Branch Post Office |
| Rampura BO | BO | Branch Post Office |
| Paigambarpur BO | BO | Branch Post Office |
| Tehwara BO | BO | Branch Post Office |
| Singhwara SO | SO | Sub Post Office |
| Bihar Nursary BO | BO | Branch Post Office |
