Postal Index Number (PIN) or Zip code is a 6 digit
code. There are 8 PIN regions in India.
Understanding how PIN Code works is simple if you
understand the following:
The first two digits of the PIN Code together indicates the sub region or one of the postal circles.
The first three digits of the PIN Code together indicates a sorting / revenue district.
The last three digits of the PIN
Code refer to the delivery Post Office.