The pin code week is celebrated every year from 15th of January to the 21st of January to distribute the message about pin code importance. Every document has a small rectangular box which again has six partitions to fill up the pin code number of the particular place. This box is generally ignored by the people and left unfilled. This small box represents a steering wheel of the letter for the postal department.
What is a PIN code
The full form of the PIN is Postal Index Number which is known by the name pin code or pin number. Pin code is a 6 digit’s unique number which has been allotted to the post offices. It helps a lot in delivering the mail all over the India. This pin code denotes the real address and ensures where the letter has to be reached.
How does PIN code work
To work the pin code system very well, the whole country has been divided into the eight PIN zones. States of the country is indicated by the particular number and direction wise such as:
Number 1 denotes the Northern pin jones like Haryana, Delhi, Himachal Pradesh, Punjab, Jammu & Kashmir.
Number 2 denotes the other Northern pin jones like Uttar Pradesh and Uttaranchal.
Number 3 denotes the Western pin jones like Rajasthan and Gujarat.
Number 4 denotes the other Western pin jones like Maharastra, Chattisgarh and Madhya Pradesh.
Number 5 denotes the Southern pin jones like Andhra Pradesh and Karnataka.
Number 6 denotes the other Southern pin jones like Kerala and Tamil Nadu.
Number 7 denotes the Eastern pin jones like Orissa, West Bengal and North Eastern.
Number 8 denotes the other Eastern pin jones like Bihar and Jharkand.
As pin code is a number of six digits, first digit indicates pin zones (states or region), second and third digits indicates district (where the delivering post office is located), next three digits indicates the exact post office (where the letter is to be sent).
History of PIN code
Pin code system was first opened to the public on 1st of April in the year 1774. At that time it was of only 3 pin jones such as Bengal (whole Eastern and Northern regions), Madras (whole Southern regions) and Bombay (rest of the regions). After becoming an independent India, pin code system was divided into eight pin jones.
(Ref : http://www.indiacelebrating.com/events/pin-code-week/ & http://www.ninetiesgang.com/)