Random Japan Address Generator — Postal code & Phone Formats

Daniel Chen

Japan · Male, 50 · 1975-12-24

Address

Street address: 8334 Chuo-dori
City: Kyoto
Region: Kyoto (KYT)
Postal code: 601-5330
Country: Japan

Profile

Full name: Daniel Chen
Phone: +81 90 2962 2402
Email: daniel.chen99@example.org
My Number: 6377-5517-7113
Occupation: UX Researcher

JSON for this record

{
  "countryCode": "JP",
  "country": "Japan",
  "firstName": "Daniel",
  "lastName": "Chen",
  "fullName": "Daniel Chen",
  "gender": "Male",
  "birthday": "24/12/1975",
  "birthdayISO": "1975-12-24",
  "streetAddress": "8334 Chuo-dori",
  "city": "Kyoto",
  "state": "Kyoto",
  "stateAbbr": "KYT",
  "zip": "601-5330",
  "phone": "+81 90 2962 2402",
  "email": "daniel.chen99@example.org",
  "job": "UX Researcher",
  "company": "Acme Corp",
  "nationalId": "6377-5517-7113",
  "nationalIdLabel": "My Number",
  "ipv4": "198.51.100.131",
  "mac": "36:67:89:F7:F8:40",
  "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36"
}

Test data only. This record describes no real person. Numbers are drawn from ranges reserved so they can never be assigned, and the address is not deliverable. Using synthetic data to impersonate anyone, open or verify an account, or evade identity checks is prohibited — see the terms.

How Japan addresses are structured

47 prefectures: one to (Tokyo), one dō (Hokkaido), two fu (Osaka and Kyoto) and 43 ken. The suffix is part of the name.

Example layout

〒100-0001
Tokyo-to
Chiyoda-ku
Chiyoda 1-1-1
Tanaka Hiroshi

Postal code
Prefecture
City or ward
District, block, building number
Recipient

Postal code (郵便番号) format

Local name	postal code (郵便番号)
Format	3 digits, hyphen, 4 digits
Example	100-0001

Seven digits written with a hyphen after the third.
Often prefixed with the 〒 postal mark on Japanese-language forms.
The first two digits indicate the prefecture or a major area within it.
Expanded from three or five digits to the current seven in 1998.

Japan phone number format

Country code	+81
Numbering plan	Japanese Numbering Plan
Example	+81 90 1234 5678

Mobile prefixes are 070, 080 and 090; the trunk zero drops internationally.
Area code lengths vary inversely with population — Tokyo is 03, Osaka 06, while rural codes reach five digits.
IP telephony uses the distinct 050 prefix.

My Number (個人番号)

Identifier	My Number (個人番号)
Example shape	1234 5678 9012

Twelve digits, introduced in 2016.
Includes a check digit computed over the first eleven.
Its use is legally restricted to tax, social security and disaster response.

The identity numbers this page generates match the documented digit pattern so that form validation can be tested. They are not issued numbers, they correspond to no person, and they will not resolve against any authority.

Cities and prefectures

The generator draws from these cities. Each is paired with the prefecture it is actually in, and with the postal code (郵便番号) prefix that area really uses — so a generated record is internally consistent rather than three unrelated values stuck together.

City	Prefecture	Postal code (郵便番号) prefix
Tokyo	Tokyo TKY	10
Yokohama	Kanagawa KNG	22
Osaka	Osaka OSK	53
Nagoya	Aichi AIC	46
Sapporo	Hokkaido HKD	06
Fukuoka	Fukuoka FKO	81
Kyoto	Kyoto KYT	60
Kobe	Hyogo HYG	65
Sendai	Miyagi MYG	98

Frequently asked questions

Why do Japanese addresses read from largest to smallest?

Japanese addressing describes location by successive narrowing — prefecture, then ward, then district, then block, then building. When romanised for international mail the order is usually reversed to match Western convention, which means the same address exists in two legitimate orderings. Address models that assume one fixed order cannot represent both.

Do Japanese streets have names?

Mostly not. Outside a few planned cities like Kyoto and Sapporo, streets are unnamed and buildings are located by chōme (district), block, and building number within the block. The numbering follows registration order rather than physical sequence, so consecutive numbers are not necessarily adjacent.

What is the 〒 symbol?

The Japanese postal mark, written before the postal code on domestic forms. It is not required and is normally dropped on international mail, but it appears on virtually every Japanese-language address field.

Should names be given surname first?

In Japanese, yes — surname precedes given name. Romanised forms vary, and the Japanese government moved to surname-first for official romanisation in 2020. If you store a single full-name string you will not be able to render either convention reliably.

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