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PIN code 313704 is the Postal Index Number assigned to the B K Kalwana B.O post office in UDAIPUR district, Rajasthan. It is administered under the Rajasthan Circle Postal Circle. The code falls under Zone 3 of India's postal network, covering the Western 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 (3) identifies the broad postal zone; the first three digits (313) pinpoint the postal district or sorting hub; and the last three digits (704) identify the specific delivery post office.
When addressing letters, parcels, or courier shipments to B K Kalwana B.O in UDAIPUR, Rajasthan, always include PIN – 313704 in the postal address to ensure accurate sorting and on-time delivery by India Post.
| PIN Code | 313704 |
| Zone | Zone 3 · Western India |
| Sort District | 313 |
| Delivery Code | 704 |
| Postal Circle | Rajasthan Circle |
| State / UT | Rajasthan |
Browse PIN codes for other post offices in UDAIPUR, Rajasthan