PIN code 517101 belongs to Chandragiri H.O (Head Post Office), located in Tirupati district, Andhra Pradesh. It falls under the Southern Postal Region and is served by 2 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Chandragiri H.O | HO | Head Post Office |
| Chandragiri Fort S.O | SO | Sub Post Office |
