I'm trying to find out where to download Postal Code boundaries (e.g. Shapefiles, GML, KML) for India. This data needs to be compatible with a typical GIS software (e.g. ArcGIS, QGIS).
Can someone point me to a data source for this?
Not an answer, but too long for a comment.
Possibly helpful links:
https://www.mbi-geodata.com/en/2013/04/11/press-release-new-postal-code-boundaries-for-india/ (not free, and linked page is in German)
http://geoportal.gsdl.org.in/postal/ (and related pages)
http://postalcode.globefeed.com/india_postal_code.asp (sublinks may be helpful, but are not in GIS format)
https://groups.google.com/forum/#!topic/datameet/MWbzzQJ0BcI (one of a couple of pages that suggests this data isn't well-defined)
To be fair, this is all google stuff, so you've probably seen it.