Random Japan Address Generator

Choose how many addresses you want (1 to 15), press Generate Address, and you get that many random Japanese addresses on one line each: a street line, a city or ward, a prefecture, a seven-digit postal code and the word Japan. Every card has a copy button. None of the addresses exist. The prefectures are the real 47 and the postal codes follow the real 123-4567 pattern, but the street and city parts are generated, so nothing you get here belongs to a real household.

What a generated address looks like

A typical result:

34337 渡辺 Highway, 美羽村, 千葉県 984-0368, Japan

Reading left to right:

• Street line – a building number, a Japanese family or given name in kanji (渡辺, 吉田, 蓮, 結菜) and a street-type word. The street-type word is in English (Highway, Crest, Harbor), which is the one obviously artificial part of the output. Real Japanese addresses rarely name streets at all; see the format notes below.
• City or ward – usually a generated Japanese town such as 美羽村 (-mura, village), 港 大翔市 (-shi, city) or 湖 颯太町 (-chō, town). Occasionally the generator falls back to an English-language city name instead, so you may see a line with Gaithersburg in it. Regenerate if that matters for your use.
• Prefecture – one of the 47 real prefectures, written with its suffix: 東京都, 北海道, 大阪府, 京都府, and the 43 -県 prefectures such as 千葉県, 神奈川県, 香川県 and 鹿児島県.
• Postal code – seven digits split 3-4, which is the format Japan Post has used since 1998. The digits are random, so a given code may or may not be assigned, and it will not correspond to the prefecture shown.
• Country – Japan, in English, so the line works in international address fields.

When a fake Japanese address is useful

• Testing forms that accept Japanese input. Kanji in the street and city fields is a good check that your database, validation and PDF export handle multi-byte characters without mangling them.
• Postal-code validation. The 123-4567 pattern is what most Japanese checkout forms enforce. Generated codes pass a format check but will fail a lookup against Japan Post's database, which is exactly what you want when testing the failure path.
• Placeholder data in mockups and demos. A shipping label or customer record with 神奈川県 on it reads as Japanese at a glance, without using anyone's real address.
• Sign-ups that demand an address you don't want to give. A generated line fills the field and points nowhere.

For other countries built the same way, try the Random Address in France, Random Address in Sweden and Random Mexico Address Generator. For a nearby territory with a very different format, see the Random Hong Kong Address Generator.

How real Japanese addresses are structured

Japan addresses from large to small, the reverse of Western order. Written in Japanese, a full address runs: postal code, prefecture, municipality, then the area subdivisions, then the building. The postal code is written with the 〒 mark: 〒100-0005. Most streets have no names. Instead, a city is divided into districts (町 or 丁目), each district into blocks (番), and each block into building numbers (号), so the last part of an address is a string like 1丁目2番3号, often shortened to 1-2-3. In Tokyo's 23 special wards, the municipality level is a ward (区), such as 千代田区. Written in English, the order is flipped so the building comes first:

1-2-3 Marunouchi, Chiyoda-ku, Tokyo 100-0005, Japan

Postal codes encode geography from left to right: the first two digits identify a region (10–20 for Tokyo, 53–59 for Osaka, 06–09 for Hokkaido) and the remaining five narrow down to a town or a large building. The generator gets the shape right but not the geography, so don't use its output to test a postal-code-to-prefecture lookup.

Sample output

Five addresses from a single run, exactly as the tool prints them:

• 34337 渡辺 Highway, 美羽村, 千葉県 984-0368, Japan
• 9483 蓮 Shoal, 港 大翔市, 香川県 079-5289, Japan
• 9136 結菜 Harbor, 湖 颯太町, 神奈川県 149-7651, Japan
• 976 陽翔 Path, 中村区, 岐阜県 363-0657, Japan
• 4103 莉子 Crescent, 東 陽翔区, 愛知県 002-0025, Japan

Browse all address & postal code generators for the rest of the country list, including Australia and Canada.