Complete List of Japan Postal Codes

This is a list of all postal codes in Japan, along with additional information such as the state, county, and geographic coordinates. Source from Geonames.org

Here's what you get:

Record Count: 

64,586

Last Updated: 

02/16/2012

Regions Included: 

Worldwide

Included Fields: 

Postal Code
Place Name
State
County
Latitude
Longitude