Japan address generator

Random Japan addresses for software testing. Every postal code (郵便番号) is taken from the same dataset record as its city and prefecture, and the address is laid out the way Japan writes it.

A Dataset-matched
4,003 cities
47 prefectures
Real postal codes (郵便番号)
Japanese (kanji and kana) + Latin

Country

Prefecture

City

Options

Always include an apartment or unit Never include a unit Add placeholder postcodes where none are linked to places Postal label capitals

〒436-0067 静岡県掛川市下西郷28-6 日本

Latin script28-6 Shimosaigo, Kakegawa-shi, Shizuoka 436-0067 JAPAN

City, prefecture and postal code (郵便番号): one Japan Post record
Street name, number: synthetic

Synthetic test data: not a verified or deliverable address.

Street: 掛川市下西郷28-6 28-6 Shimosaigo, Kakegawa-shi
District: 下西郷 Shimosaigo
City: 掛川市 Kakegawa-shi
Prefecture: 静岡県 Shizuoka
Postal code (郵便番号): 436-0067 From datasetThis postcode comes from the same dataset record as the locality and region.
Country: Japan (JP)
Coordinates: 34.784, 138.017 Approximate centre of the locality, not the building

ALocality, region and postcode come from one dataset recordSeed page-JPHow coverage levels work

How addresses are written in Japan

Layout from Google’s address metadata (libaddressinput), the format data Chrome and Android use for address forms.

〒[Postal code (郵便番号)] [Prefecture] [Street address] [Organisation] [Recipient name]

In Latin script, the order changes:

[Recipient name] [Organisation] [Street address], [Prefecture] [Postal code (郵便番号)]

Required fields: Street address, prefecture and postal code (郵便番号)
Postal code (郵便番号): Examples: 154-0023, 350-1106, 951-8073, 112-0001
Pattern: \d{3}-?\d{4}
Prefectures: 47 in the dataset
Capitals: Mail labels conventionally capitalise the prefecture
Script: Japanese (kanji and kana), with a Latin-script version for international use
Calling code: +81
Official lookup: Postcode finder

Map of the 4003 localities in Japan used by the generator — Each dot is a city the generator can use.

About the data for Japan

ADataset-matched. Each locality, region and postcode is taken from the same Japan Post postal code data (KEN_ALL, UTF-8 and romaji editions) record.

Localities: 4,003 · Japan Post postal code data (KEN_ALL, UTF-8 and romaji editions)
Postcodes: Every postcode comes from the dataset record of its locality.
Names: Japanese (country-specific list)
Streets: Synthetic names built from common local street words. They are not taken from real maps.

Japanese addresses are written from the largest unit to the smallest in Japanese script, and in reverse order in Latin script. Most streets are unnamed; blocks and buildings are numbered instead.

Sources, licences and method