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PIN code 735231 is the Postal Index Number assigned to the Ahlay BO post office in DARJILING district, West Bengal. It is administered under the West Bengal 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 (735) pinpoint the postal district or sorting hub; and the last three digits (231) identify the specific delivery post office.
When addressing letters, parcels, or courier shipments to Ahlay BO in DARJILING, West Bengal, always include PIN – 735231 in the postal address to ensure accurate sorting and on-time delivery by India Post.
| PIN Code | 735231 |
| Zone | Zone 7 · Eastern India |
| Sort District | 735 |
| Delivery Code | 231 |
| Postal Circle | West Bengal Circle |
| State / UT | West Bengal |
Browse PIN codes for other post offices in DARJILING, West Bengal