In Katihar district, Bihar, PIN code 854105 is anchored by Katihar Bara Bazar SO, a Sub Post Office. Mail addressed to this code is sorted through the Eastern Postal Region, across 4 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Katihar Bara Bazar SO | SO | Sub Post Office |
| Katihar Colony SO | SO | Sub Post Office |
| Katihar Rs SO | SO | Sub Post Office |
| Katihar HO | HO | Head Post Office |
