Eraiyur S.O (Perambalur) is the primary post office registered under PIN code 621133 in Perambalur, Tamil Nadu. This code sits within the Southern Postal Region, with 3 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Eraiyur S.O (Perambalur) | OTHER | post office |
| Sirumathur B.O | BO | Branch Post Office |
| Murukkankudi B.O | BO | Branch Post Office |
