Karuvazhakarai B.O is the primary post office registered under PIN code 609304 in Mayiladuthurai, Tamil Nadu. This code sits within the Southern Postal Region, with 5 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Karuvazhakarai B.O | BO | Branch Post Office |
| Melapathi B.O | BO | Branch Post Office |
| Kidarankondan B.O | BO | Branch Post Office |
| Kilaiyur S.O | SO | Sub Post Office |
| Kanjanagaram B.O | BO | Branch Post Office |
