Japanese Zip Codes (Postcodes) in English
Here’s a site that is useful if you have someone’s address in Japan but no postcode or (which has happened to me) you have just moved into a new apartment and have your own address but no postcode. Americans substitute zip code for postcode.
Japanese Postcode Directory in English
[update: 14th Feb 2006]
It seems the company hosting the info has pulled them, but the wayback machine is your friend. Here is the link to their copy of the japanese postcode info.
