Kaithi SO is the primary post office registered under PIN code 221116 in Varanasi, Uttar Pradesh. This code sits within the Northern Postal Region, with 5 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Kaithi SO | SO | Sub Post Office |
| Srikanthpur BO | BO | Branch Post Office |
| Tekuri BO | BO | Branch Post Office |
| Rajwari BO | BO | Branch Post Office |
| Chandrawati BO | BO | Branch Post Office |
