Annamperumalkoil B.O is the primary post office registered under PIN code 609109 in Mayiladuthurai, Tamil Nadu. This code sits within the Southern Postal Region, with 6 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Annamperumalkoil B.O | BO | Branch Post Office |
| Tiruvali B.O | BO | Branch Post Office |
| Karaimedu B.O | BO | Branch Post Office |
| Sembadaniruppu B.O | BO | Branch Post Office |
| Kattiyaniruppu B.O | BO | Branch Post Office |
| Sattanathapuram S.O | SO | Sub Post Office |
