In Ariyalur district, Tamil Nadu, PIN code 621707 is anchored by Arungal BO, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 9 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Arungal BO | BO | Branch Post Office |
| Suthamalli BO | BO | Branch Post Office |
| Edayathangudi BO | BO | Branch Post Office |
| Malathankulam BO | BO | Branch Post Office |
| Karuppur Senapathy BO | BO | Branch Post Office |
| Kilaiyur BO | BO | Branch Post Office |
| Vettiyur BO | BO | Branch Post Office |
| Karuppilakattalai BO | BO | Branch Post Office |
| Kilapaluvur SO | SO | Sub Post Office |
