In Sonbhadra district, Uttar Pradesh, PIN code 231206 is anchored by Churk SO, a Sub Post Office. Mail addressed to this code is sorted through the Northern Postal Region, across 4 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Churk SO | SO | Sub Post Office |
| Cherui BO | BO | Branch Post Office |
| Makari Bari B.O | BO | Branch Post Office |
| Markudi B.O | BO | Branch Post Office |
