Postal codes in Japan are known as “郵便番号” (yubin-bangou) and consist of seven digits. The first three digits indicate the prefecture or city, while the last four digits indicate the specific area within the prefecture or city. Japan introduced postal codes in 1968, and they are used for both domestic and international mail delivery. Some larger cities, such as Tokyo and Osaka, have multiple postal codes due to their size and number of neighborhoods. In addition to postal codes, Japan also uses a unique two-letter code for each prefecture, which is often included in mailing addresses. The Japan Post website provides a tool for looking up postal codes based on addresses.
Japan Regions Postal codes
- Aichi Ken
- Akita Ken
- Aomori Ken
- Chiba Ken
- Ehime Ken
- Fukui Ken
- Fukuoka Ken
- Fukushima Ken
- Gifu Ken
- Gumma Ken
- Hiroshima Ken
- Hokkaido
- Hyogo Ken
- Ibaraki Ken
- Ishikawa Ken
- Iwate Ken
- Kagawa Ken
- Kagoshima Ken
- Kanagawa Ken
- Kochi Ken
- Kumamoto Ken
- Kyoto Fu
- Mie Ken
- Miyagi Ken
- Miyazaki Ken
- Nagano Ken
- Nagasaki Ken
- Nara Ken
- Niigata Ken
- Oita Ken
- Okayama Ken
- Okinawa Ken
- Osaka Fu
- Saga Ken
- Saitama Ken
- Shiga Ken
- Shimane Ken
- Shizuoka Ken
- Tochigi Ken
- Tokushima Ken
- Tokyo To
- Tottori Ken
- Toyama Ken
- Wakayama Ken
- Yamagata Ken
- Yamaguchi Ken
- Yamanashi Ken
Search by Map
Find the postal code or address for any location in Japan with our interactive map of zip codes. Simply click on the desired location on the map.
Japan Zipcode Format
Find Postal Code in Japan
Each region in Japan has its own unique postal code, and it’s important to have the correct code to ensure timely delivery of your mail. To find the correct code for your destination region, simply click on the region in the list above. If you’re unsure which region to choose, try our address lookup tool at the top of the page or use our interactive map to find your zip code.