Ambagarathur S.O is the primary post office registered under PIN code 609601 in Karaikal, Puducherry. This code sits within the Southern Postal Region, with 3 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Ambagarathur S.O | SO | Sub Post Office |
| Nallambal B.O | BO | Branch Post Office |
| Seithur B.O | BO | Branch Post Office |
