Postcodes / Zipcodes 100% open

What data is expected?

A database of postcodes/zipcodes and the corresponding geospatial locations in terms of a latitude and a longitude (or similar co-ordinates in an openly published national co-ordinate system). A database which gives a location in terms of the name of a town or a street without lat/long co-ordinates is not considered acceptable unless the name of the town or street can be further converted to a latitude and longitude by means of other open data (eg an open gazetteer with latitude and longitude attributes).

What data is available

•   Does the data exist? Yes
•   Is data in digital form? Yes
•   Publicly available? Yes published by Japan Post)
•   Is the data available for free? Yes
•   Is the data available online? Yes (Here)
•   Is the data machine readable? Yes (n/a)
•   Available in bulk? Yes
•   Openly licensed? Yes(Here)
•   Is the data provided on a timely and up to date basis? Yes

Details

JP Post does not claim copyright on zip code data.

Additionally, a data set linking postal addresses with geo-coordinates are separate, but publicly available online, free of charge, in bulk, without much usage restriction, in digital, machine-readable format, in a timely manner (updated yearly). http://nlftp.mlit.go.jp/isj/index.html