600056 PIN Code
| Office | Type | Delivery | District | State |
|---|---|---|---|---|
| Iyyappanthangal S.O | PO | Non Delivery | Thiruvallur | Tamil Nadu |
| Kattupakkam BO | BO | Non Delivery | Thiruvallur | Tamil Nadu |
| Poonamallee SO | PO | Delivery | Thiruvallur | Tamil Nadu |
| Senneerkuppam BO | BO | Non Delivery | Thiruvallur | Tamil Nadu |
Source: RBI / India Post source upload · verified 04 Jul 2026