631211 PIN Code
| Office | Type | Delivery | District | State |
|---|---|---|---|---|
| Karthikeyapuram B.O | BO | Delivery | Thiruvallur | Tamil Nadu |
| Kasavarajpetta B.O | BO | Delivery | Thiruvallur | Tamil Nadu |
| Saraswathinagar S.O | PO | Delivery | Thiruvallur | Tamil Nadu |
Source: RBI / India Post source upload · verified 04 Jul 2026