600123 PIN Code
| Office | Type | Delivery | District | State |
|---|---|---|---|---|
| Malayambakkam BO | BO | Delivery | Thiruvallur | Tamil Nadu |
| Nazarethpettai SO | PO | Delivery | Thiruvallur | Tamil Nadu |
| Sembarambakkam BO | BO | Delivery | Thiruvallur | Tamil Nadu |
Source: RBI / India Post source upload · verified 04 Jul 2026