Japanese Address Format Explained: 2026 Guide for Foreign Residents

Domestic Japanese addresses are normally written from the broadest geographic unit toward the exact residence. The usual order is postal code, prefecture, municipality or ward, town or neighborhood, local numbering, then building and room information.

Do not force every address into one formula. Tokyo's 23 special wards, designated cities with wards, rural areas, places using ōaza or aza, and areas with distinctive local address conventions can look different.

The safe rule is to identify each component in the official address you were given rather than guessing what a missing component 'should' be.

• Postal code
• Prefecture
• City / ward / town / village
• Town, neighborhood, ōaza or aza
• Chōme / block / building or lot number
• Building name
• Room number
• Recipient name

Japanese postal codes use seven digits and are commonly written as 123-4567. The 〒 symbol may appear before the number on paper, but many web forms want only the digits or split the code into three and four digits.

Use Japan Post's current postal-code search instead of copying a code from an old website or map. Japan Post also publishes downloadable postal-code data, including Romanized address data.

A postal code usually points to an area rather than one apartment. Large organizations can also have individual postal codes, so a postal code alone does not prove the exact residential address.

• 郵便番号 — postal code
• Typical format: 123-4567
• Some forms require 1234567 without a hyphen
• Verify uncertain codes with Japan Post

The prefecture-level part ends in 都, 道, 府 or 県: 東京都, 北海道, 大阪府, 京都府, or one of the other prefectures ending in 県.

Below that, common local-government suffixes include 市 (shi, city), 区 (ku, ward), 町 (machi/chō, town) and 村 (mura/son, village). 郡 (gun) can also appear with towns and villages.

A designated-city address may include both the city and ward, such as 横浜市西区. A Tokyo 23-ward address typically goes directly from 東京都 to a special ward such as 新宿区. Do not delete one field just because another form combines them.

• 都道府県 — prefecture field
• 市区町村 — municipality / ward field
• Tokyo 23 wards and designated-city wards are handled differently
• Copy the official municipality structure

Below the municipality comes the smaller locality. Depending on the place, this can be a neighborhood name, town area, 大字 (ōaza), 字 (aza) or another official local unit.

A familiar urban pattern is 3丁目1番2号, often shortened in everyday horizontal writing to 3-1-2. The first number may be chōme, followed by block and building or lot number, but that interpretation is not universal.

Some addresses have no chōme. Some use a different local numbering system. Never add '3-chōme' or reinterpret a number string merely because it resembles the common Tokyo pattern.

• 丁目 — chōme
• 番 — block or number element
• 号 — building/lot number element
• 大字 / 字 can be official address components
• Hyphenated numbers are a practical shorthand, not a universal grammar

For apartments and condominiums, write the building name and room number when they are part of the address or required by the service. A correct neighborhood and block number may still point to a building with many units.

Do not create an English translation of a Japanese building name unless the building actually uses that English spelling. Check the lease, building entrance, management company documents, utility account or existing official correspondence.

Room numbers may appear as 405号室, 405号, 405, #405 or Apt. 405 depending on the context. For a Japanese domestic form, follow the field's own convention.

• 建物名 — building name
• 部屋番号 — room number
• 号室 — room/unit marker
• Keep the building spelling consistent across important accounts

A Japanese website may ask separately for 郵便番号, 都道府県, 市区町村, 町名・番地 and 建物名・部屋番号. Another site may combine the municipality and town into one field or put the building on Address Line 2.

When fields are separated, do not repeat the same location text in two boxes unless the instructions require it. Repetition can create a malformed shipping label or an identity-verification mismatch.

If the form refuses a hyphen, space, long building name or Roman characters, use the format specified by that service rather than changing the underlying address itself.

• 郵便番号 — postal code
• 都道府県 — prefecture
• 市区町村 — city / ward / town / village
• 町名・番地 — locality and number
• 建物名・部屋番号 — building and room

A postal address can be deliverable even when it is not written exactly like the address stored in an official or commercial database. That distinction matters for banks, mobile contracts, insurance, residence procedures and identity checks.

For a long-term foreign resident, the residence address recorded through the municipality is especially important. Immigration Services Agency rules require eligible mid- to long-term residents who move to report the new residence within 14 days; bringing the residence card for the municipal move-in or move notification satisfies the related immigration residence-address notification in the prescribed cases.

When an organization asks for the address 'as shown on' your residence card, certificate of residence, bank record or contract, copy that version instead of using a postal shorthand.

• Delivery-friendly and identity-match formats are not always identical
• Use the source document named by the organization
• Update the registered residence after moving
• Avoid inventing abbreviations during identity checks

Japan Post states that when the correct seven-digit postal code is written, the prefecture and municipality or administrative-ward part can be omitted from a domestic postal address. The town-area information and everything below it must still be written.

This is a postal-delivery rule, not a universal rule for contracts or web forms. Do not use it to shorten an address on a bank application, resident procedure or identity check unless that organization explicitly allows the shortened format.

For important mail, writing the complete address is usually clearer, especially when you are unfamiliar with which part of the locality is considered the town-area element.

• Correct seven-digit postal code is required
• Town-area information and lower elements must remain
• Postal omission rules do not automatically apply to official forms
• Use the full address when precision matters

Japan Post's English international-mail guidance uses Roman letters and Arabic numerals as the general rule for reliable delivery. Its Japanese-sender example starts with the name, then building and room, smaller address elements, city/prefecture, and finally postal code and country.

Using a fictional Japanese address, a practical format is: ALEX SMITH / GREEN HEIGHTS 405 / 3-1-2 SHINJUKU / SHINJUKU-KU, TOKYO / 160-0022 JAPAN.

Write JAPAN clearly for international mail. Follow the postal or courier label fields when a service provides a structured form; the printed label's order may be handled automatically.

• Use Roman letters and Arabic numerals
• Put building/room before broader location lines
• Put city and prefecture near the end
• Finish with postal code and JAPAN

On December 22, 2025, the government replaced the old 1954 Cabinet Romanization notice with a new Cabinet Notice No. 4. The new main table uses forms such as shi, chi, tsu, fu, sha and jo.

The same official guidance says existing spellings used in particular fields do not need to be changed immediately and gives Tokyo as an example of an established form that can remain in use even though the new general Romanization guide would represent the long vowels differently.

For addresses, that means you should not mechanically 'correct' every place or building name. Prefer an official municipality spelling, Japan Post data, building-management spelling or the version already registered with the organization you are dealing with.

• New Cabinet Romanization guidance took effect December 22, 2025
• The new main table uses shi / chi / tsu / fu-style spellings
• Established forms are not automatically invalid
• For addresses, consistency with the actual official/service spelling matters

Japan Post launched Digital Address in 2025. It represents a full address—from postal code through room number—with a seven-character alphanumeric code.

A normal postal code is seven numeric digits assigned to an area for postal sorting. A Digital Address is a separate seven-character alphanumeric representation linked to a full address.

Use Digital Address only where a service explicitly supports it. Do not type a Digital Address into an ordinary postal-code field or assume it replaces the address fields on a form that has not adopted the service.

• Postal code: seven digits
• Digital Address: seven alphanumeric characters
• Digital Address can represent the full address
• Only use it in supported services