PIN code 521403 belongs to Gampalagudem S.O (Sub Post Office), located in Ntr district, Andhra Pradesh. It falls under the Southern Postal Region and is served by 9 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Gampalagudem S.O | SO | Sub Post Office |
| Gosavedu B.O | BO | Branch Post Office |
| Erramadu B.O | BO | Branch Post Office |
| Kanumuru B.O | BO | Branch Post Office |
| Kothapalli B.O | BO | Branch Post Office |
| Ammireddigudem B.O | BO | Branch Post Office |
| Arlapadu B.O | BO | Branch Post Office |
| Vinagadapa B.O | BO | Branch Post Office |
| Gullapudi B.O | BO | Branch Post Office |
