Alagapuram S.O is the primary post office registered under PIN code 636004 in Salem, Tamil Nadu. This code sits within the Southern Postal Region, with 3 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Alagapuram S.O | SO | Sub Post Office |
| NAGARAMALAI ADIVARAM SO | SO | Sub Post Office |
| Marakkadai S.O | SO | Sub Post Office |
