Editing Postal code (section)

====India====
{{Further|Postal Index Number}}

[[File:Example of Indian Postal Index Number.svg|thumb|An example of a Postal Index Number from [[Ujjain]] in [[Madhya Pradesh]]. '''4''' indicates the ''West postal zone'', '''5''' indicates ''a postal sub-zone in Madhya Pradesh'', '''6''' indicates the ''Ujjain sorting district'', '''0''' indicates the ''Ujjain core area service route'', '''01''' indicates the ''Ujjain Head Office as the delivery office''.]]

Postal codes are known as [[Postal Index Number]]s (PINs; sometimes as PIN codes) in India. The PIN system was introduced on 15 August 1972 by India Post. India uses a unique six-digit code as a geographical number to identify locations in India. The format of the PIN is ZSDPPP defined as follows:

: Z – Zone
: S – Sub-zone
: D – Sorting District
: P – Service Route
: PP – Post Office

The first digit represents nine total zones: eight regional and one functional.