In Mayiladuthurai district, Tamil Nadu, PIN code 609104 is anchored by Kannukiniyanar Koil B.O, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 6 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Kannukiniyanar Koil B.O | BO | Branch Post Office |
| Umayalpathi B.O | BO | Branch Post Office |
| Madanam B.O | BO | Branch Post Office |
| Kadavasal S.O | SO | Sub Post Office |
| Pachaiperumal Nallur B.O | BO | Branch Post Office |
| Semmangudi(SRK) B.O | BO | Branch Post Office |
