Nemili B.O is the primary post office registered under PIN code 631201 in Thiruvallur, Tamil Nadu. This code sits within the Southern Postal Region, with 3 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Nemili B.O | BO | Branch Post Office |
| Arungolam S.O | SO | Sub Post Office |
| Chivada B.O | BO | Branch Post Office |
