Japan Location Dataset (Prefectures + Cities)

A complete, clean, and developer-friendly Japan Location Dataset covering:

- 1 country (Japan)

- 47 prefectures

- 1,700+ cities, wards, towns, and villages

Perfect for apps, websites, forms, GIS tools, databases, machine learning preprocessing, and any project that needs accurate hierarchical Japanese location data.

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## 📦 What's Included

- country.json – Country list

- prefectures.json – All 47 prefectures

- cities.json – 1,700+ municipalities

- README.md – Full documentation

- LICENSE.txt – Strict no-redistribution license

- VERSION.txt / CHANGELOG.md

All files are UTF-8 JSON and structured for easy integration.

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## 🗂 Data Structure

```

country → prefecture → city/town/village

```

Example:

```json

{ "id": "10243", "countryId": "102", "name": "Kumamoto Prefecture" }

{ "id": "101", "prefectureId": "10243", "name": "Kumamoto City Chuo Ward" }

```

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## 🔧 Use Cases

- Address selection (country → prefecture → city dropdown)

- Region-locked Q&A apps

- User registration forms

- Japanese location search

- Delivery / logistics apps

- Tourism / travel platforms

- ML dataset enrichment

- Game development (maps / NPC behavior regions)

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## 📘 License

This dataset is for use inside your own projects.

Redistribution, sharing, or reselling the raw JSON is strictly prohibited.

(Full details in LICENSE.txt)

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## 💡 Need More?

World-wide datasets, API-ready formats, CSV/SQL versions, or custom mappings are available on request.

Happy building! 🚀