In Sivaganga district, Tamil Nadu, PIN code 630557 is anchored by Nalukottai BO, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 4 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Nalukottai BO | BO | Branch Post Office |
| Sholapuram BO | BO | Branch Post Office |
| Okkur SO | SO | Sub Post Office |
| Kalayarmangalam BO | BO | Branch Post Office |
