Japan synthetic address generator
Generate fictional data for form debugging, checkout testing, and learning local address formats. Search by city, region, or postal code.
Streets, names, phones, and companies are synthetic — they do not represent real residents.
Country format detailsJP
Japan postcodes are XXX-XXXX; My Number is 12 digits; admin hierarchy is 都道府県/市区町村/町域.
Essential formats
- Postal format
XXX-XXXX (3-4).
- Phone format
City code 1-4 digits (Tokyo 03) + subscriber 4 digits, +81.
ID format
- My Number (Individual Number)
12 digits; used for tax/social security, not a daily ID.
Admin structure
- Hierarchy
都道府県 (47) → 市区町村 → 町域. Tokyo's 23 wards are special.
Frequently asked questions
Can this address receive real mail?
No. The generator creates synthetic test data for form development and address-format learning. Do not use it for delivery, identity verification, or platform review.
Do city and postal code match?
Public location data is used where available. Personal names, streets, phone numbers, and companies are synthetic.
Can I search for a city or postal code?
Yes. Search by city, region, or postal code; unmatched queries are not silently replaced.
Are the card details real?
No. Card details use public test ranges and are not linked to real accounts or payments.
Why is an identity number included?
It is synthetic format-test data and does not represent a real person.
Is generated data uploaded?
No. Generation and saved profiles stay in this browser.