Pin Code adds wings to your mail and it completes your Address
Postal Index Number (PIN) or PIN Code is a 6 digit code of Post Office numbering used by India
Post. The PIN was introduced on August 15, 1972. There are 9 PIN regions in the country. The first
8 are geographical regions and the digit 9 is reserved for the Army Postal Service.
The first digit of PIN indicates as below:
The first 2 digits of PIN indicates as below:
Courtesy : http://www.keralapost.gov.in