Japan postal code tools

Browse Japan Postal Codes by Prefecture

Choose a prefecture on the map or in the directory to browse cities, neighborhoods and seven-digit postal codes.

Prefectures

Number of records: 47
Select a prefecture to browse its cities and postal codes.

Aichi

愛知県

7,247 Postal code

Akita

秋田県

2,156 Postal code

Aomori

青森県

2,033 Postal code

Chiba

千葉県

3,603 Postal code

Ehime

愛媛県

1,743 Postal code

Fukui

福井県

2,133 Postal code

Fukuoka

福岡県

3,307 Postal code

Fukushima

福島県

3,642 Postal code

Gifu

岐阜県

3,349 Postal code

Gunma

群馬県

1,499 Postal code

Hiroshima

広島県

2,125 Postal code

Hokkaido

北海道

7,974 Postal code

Hyogo

兵庫県

5,182 Postal code

Ibaraki

茨城県

2,866 Postal code

Ishikawa

石川県

2,482 Postal code

Iwate

岩手県

1,918 Postal code

Kagawa

香川県

710 Postal code

Kagoshima

鹿児島県

1,453 Postal code

Kanagawa

神奈川県

2,299 Postal code

Kochi

高知県

1,692 Postal code

Kumamoto

熊本県

1,861 Postal code

Kyoto

京都府

6,433 Postal code

Mie

三重県

2,457 Postal code

Miyagi

宮城県

2,870 Postal code

Miyazaki

宮崎県

876 Postal code

Nagano

長野県

1,695 Postal code

Nagasaki

長崎県

1,893 Postal code

Nara

奈良県

1,906 Postal code

Niigata

新潟県

5,399 Postal code

Oita

大分県

1,845 Postal code

Okayama

岡山県

2,182 Postal code

Okinawa

沖縄県

802 Postal code

Osaka

大阪府

3,834 Postal code

Saga

佐賀県

869 Postal code

Saitama

埼玉県

2,972 Postal code

Shiga

滋賀県

1,842 Postal code

Shimane

島根県

1,179 Postal code

Shizuoka

静岡県

2,888 Postal code

Tochigi

栃木県

1,836 Postal code

Tokushima

徳島県

961 Postal code

Tokyo

東京都

4,161 Postal code

Tottori

鳥取県

1,392 Postal code

Toyama

富山県

2,980 Postal code

Wakayama

和歌山県

1,600 Postal code

Yamagata

山形県

1,957 Postal code

Yamaguchi

山口県

1,675 Postal code

Yamanashi

山梨県

945 Postal code

How Japan's postal code directory works

Japanese postal codes contain seven digits and are commonly written with a hyphen after the third digit, such as 100-0001. Begin with a prefecture on the map or in the list, then browse the municipalities and neighborhood names linked to each code. You can also search directly when you already have a postal code.

A postal code helps route mail to an area, but it does not replace the rest of a Japanese address. Check the prefecture, municipality, neighborhood, block, building and recipient details that apply to the destination. For the most current mailing instructions and postal code data, consult Japan Post before sending important mail.

Use the prefecture map to identify a starting area, or use the alphabetical directory when you know the prefecture name. A prefecture page lists the available postal codes alongside municipality and neighborhood information, making it easier to narrow a result before you write an address. If a locality has a similar name elsewhere in Japan, check the prefecture as well as the seven-digit code.

For a mailing label, keep the postal code and the rest of the address together. The prefecture, municipality, smaller locality, block and building details may all matter when a delivery address is written. PostalMap helps you browse the recorded postal areas; Japan Post remains the official source to confirm a current code or resolve an uncertain address.

Sources and address checks

Browse this directory to locate postal areas, then verify current code and address details with Japan Post when accurate delivery matters. Japan Post postal code information ↗

Japan Post · national postcode lists · 2026-09-30 · Number of records: 146,950

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