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Postal Code, ZIP Code of Japan. References: Wikipedia: Japan Area code of Japan

Coding method

Postal Codes in Japan consist of 7 numbers .eg:

1 5 4 - 0 0 2 3

In general,the first two digits represent area.The first three digits represent post office.The last four digits represent district.

or

3 5 0- 1 1 0 6

the first two digits represent area.The last four digits represent district.All digits together represent post office.

Address format

Mr Taro Tanaka 
10-C23, Kotobukich
NIGATA 
951-C8073  JAPAN

Reference Links

• Japan address format （English，PDF format）
• Japan Postal （Japanese, English, the official website）
• post code search （Japanese）
• post code search（English）
• post code （Japanese Wikipedia）