Namasivayapuram B.O is the primary post office registered under PIN code 609811 in Mayiladuthurai, Tamil Nadu. This code sits within the Southern Postal Region, with 3 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Namasivayapuram B.O | BO | Branch Post Office |
| Kali S.O | SO | Sub Post Office |
| Tirumangalam B.O | BO | Branch Post Office |
