PIN code 821103 belongs to Mudhi BO (Branch Post Office), located in Kaimur (bhabua) district, Bihar. It falls under the Eastern Postal Region and is served by 6 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Mudhi BO | BO | Branch Post Office |
| Bararhi BO | BO | Branch Post Office |
| Sikandarpur BO | BO | Branch Post Office |
| Chainpur SO Kaimur Bhabua | OTHER | post office |
| Biur BO | BO | Branch Post Office |
| Majhganwan BO | BO | Branch Post Office |
