I’m working on a project that required accurate hierarchical Japanese location data
(prefecture → city/ward/town/village).
Since most publicly available datasets were outdated, inconsistent, or missing entries,
I compiled a clean version from multiple official sources.
It includes:
- 1 country
- 47 prefectures
- 1,700+ municipalities
- consistent hierarchical IDs
- UTF-8, machine-friendly
- suitable for forms, address validation, GIS, ML, and location-based apps
If anyone is interested, I’m happy to provide details or export it as CSV / SQL.
The full JSON dataset is available here (paid):
https://makotocroco.gumroad.com/l/japan-locations
(self-promotion: this is my own dataset)
submitted by /u/Specialist-Weight407
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