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PIN code 731129 is the Postal Index Number assigned to the Damdama BO post office in BIRBHUM district, West Bengal. It is administered under the Bihar Circle Postal Circle. The code falls under Zone 7 of India's postal network, covering the Eastern India region.
India's PIN code system — standing for Postal Index Number — was introduced on 15 August 1972 to streamline postal sorting and delivery across the country. Each 6-digit code is structured systematically: the first digit (7) identifies the broad postal zone; the first three digits (731) pinpoint the postal district or sorting hub; and the last three digits (129) identify the specific delivery post office.
When addressing letters, parcels, or courier shipments to Damdama BO in BIRBHUM, West Bengal, always include PIN – 731129 in the postal address to ensure accurate sorting and on-time delivery by India Post.
| PIN Code | 731129 |
| Zone | Zone 7 · Eastern India |
| Sort District | 731 |
| Delivery Code | 129 |
| Postal Circle | Bihar Circle |
| State / UT | West Bengal |
Browse PIN codes for other post offices in BIRBHUM, West Bengal