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History
Postal Index Number
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A Postal Index Number refers to a six-digit code in the Indian postal code system used by India Post. On 15 August 2022, the PIN system celebrated its 50th anniversary.
A post box with its PIN marked on it
A post box with its PIN marked on it
Postal code
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A postal code is a series of letters or digits or both, sometimes including spaces or punctuation, included in a postal address for the purpose of sorting mail.
Post office sign in Farrer, Australian Capital Territory, showing postcode 2607
Post office sign in Farrer, Australian Capital Territory, showing postcode 2607
1977 Soviet stamp promoting the use of postal codes
1977 Soviet stamp promoting the use of postal codes