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: 47Aichi
愛知県
7,247 Postal codeAkita
秋田県
2,156 Postal codeAomori
青森県
2,033 Postal codeChiba
千葉県
3,603 Postal codeEhime
愛媛県
1,743 Postal codeFukui
福井県
2,133 Postal codeFukuoka
福岡県
3,307 Postal codeFukushima
福島県
3,642 Postal codeGifu
岐阜県
3,349 Postal codeGunma
群馬県
1,499 Postal codeHiroshima
広島県
2,125 Postal codeHokkaido
北海道
7,974 Postal codeHyogo
兵庫県
5,182 Postal codeIbaraki
茨城県
2,866 Postal codeIshikawa
石川県
2,482 Postal codeIwate
岩手県
1,918 Postal codeKagawa
香川県
710 Postal codeKagoshima
鹿児島県
1,453 Postal codeKanagawa
神奈川県
2,299 Postal codeKochi
高知県
1,692 Postal codeKumamoto
熊本県
1,861 Postal codeKyoto
京都府
6,433 Postal codeMie
三重県
2,457 Postal codeMiyagi
宮城県
2,870 Postal codeMiyazaki
宮崎県
876 Postal codeNagano
長野県
1,695 Postal codeNagasaki
長崎県
1,893 Postal codeNara
奈良県
1,906 Postal codeNiigata
新潟県
5,399 Postal codeOita
大分県
1,845 Postal codeOkayama
岡山県
2,182 Postal codeOkinawa
沖縄県
802 Postal codeOsaka
大阪府
3,834 Postal codeSaga
佐賀県
869 Postal codeSaitama
埼玉県
2,972 Postal codeShiga
滋賀県
1,842 Postal codeShimane
島根県
1,179 Postal codeShizuoka
静岡県
2,888 Postal codeTochigi
栃木県
1,836 Postal codeTokushima
徳島県
961 Postal codeTokyo
東京都
4,161 Postal codeTottori
鳥取県
1,392 Postal codeToyama
富山県
2,980 Postal codeWakayama
和歌山県
1,600 Postal codeYamagata
山形県
1,957 Postal codeYamaguchi
山口県
1,675 Postal codeYamanashi
山梨県
945 Postal codeHow 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
Useful tools
Tools for postal codes, maps and address formats.