ISO3166-2 Region Names

The codes for the representation of names of countries and their subdivisions have been extracted from ISO 3166-2 with permission from Standards Council of Canada, the Canadian Member Body of the International Organization for Standardization.

ISO 3166 Codes

Country Codes
The GeoTag Generator includes a script to find subdivision codes.

Resources

ISO (International Standards Organisation)
ISO 3166 Maintenance Agency
Standards Council of Canada