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PIN code 700137 is the Postal Index Number assigned to the Bawali BO post office in SOUTH 24 PARGANAS 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 (700) pinpoint the postal district or sorting hub; and the last three digits (137) identify the specific delivery post office.
When addressing letters, parcels, or courier shipments to Bawali BO in SOUTH 24 PARGANAS, West Bengal, always include PIN – 700137 in the postal address to ensure accurate sorting and on-time delivery by India Post.
| PIN Code | 700137 |
| Zone | Zone 7 · Eastern India |
| Sort District | 700 |
| Delivery Code | 137 |
| Postal Circle | West Bengal Circle |
| State / UT | West Bengal |
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