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Postal Index Number
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<p>A Postal Index Number (PIN; sometimes redundantly a PIN code) refers to a six-digit code in the <a href="/facts/India/1kKHcnxM">Indian</a> <a href="/facts/Postal_code/5Kckdr9M">postal code</a> system used by <a href="/facts/India_Post/UMvwDAje">India Post</a>. On 15 August 2022, the PIN system celebrated its 50th anniversary. </p>