In Thiruvallur district, Tamil Nadu, PIN code 602021 is anchored by Perattur B.O, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 7 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Perattur B.O | BO | Branch Post Office |
| Odikkadu B.O | BO | Branch Post Office |
| Karikalavakkam B.O | BO | Branch Post Office |
| Kilanur B.O | BO | Branch Post Office |
| Ikkadu S.O | SO | Sub Post Office |
| Monnavedu B.O | BO | Branch Post Office |
| Thalakancheri B.O | BO | Branch Post Office |
