In Thiruvallur district, Tamil Nadu, PIN code 600077 is anchored by Numbal 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 |
|---|---|---|
| Numbal BO | BO | Branch Post Office |
| Thiruverkadu SO | SO | Sub Post Office |
| Ayapakkam BO | BO | Branch Post Office |
| Veeraraghavapuram BO | BO | Branch Post Office |
