MapFan DB Address map databases
Postal code point data
Postal code point data with latitude and longitude assigned to postal codes (7-digit and 3-digit) across Japan.
It categorizes addresses into four types: addresses, buildings, large businesses, and post office boxes, and updates 12 times a year to promptly respond to the latest administrative changes and new establishments.
It can be used for a variety of location-based services, such as latitude and longitude searches from postal codes, delivery area determination, and form input assistance.