📋 Postal Guidelines: China to Japan
Postal items dispatched from Mainland China to Japan do not require a Japan postal code for international transit.
The destination country (Japan) must be clearly indicated in Chinese characters on the mail item. The complete destination address, including city and detailed street address, must also be provided in Chinese.
To facilitate final delivery within Japan, the complete delivery address must be legibly written in the local language (English or local language).
Including the correct local Japan postal code is strongly recommended. This significantly enhances sorting efficiency at Japan Post and optimizes last-mile delivery by postal carriers.
📮JP Japan Regional Postal Code FAQ & Postal Regulations
🔢 How many digits are in a Japanese postal code?
Japanese postal codes consist of 7 digits in XXX-XXXX format (e.g., 100-8994).
🌍 Are extra markings needed for international mail?
Yes, for mail to Japan, add 'JAPAN' in English on the last address line, while keeping the 7-digit postal code.
❓ How to find an unknown postal code?
Use Japan Post's official postal code search (jp.postcode.com) or Google "住所 郵便番号" + address keywords.
📮 Will a wrong postal code delay delivery?
If the full address is correct, delivery may succeed but will be significantly delayed. Verify codes via Japan Post's address correction system.
🔄 Do postal codes ever change?
Yes, codes may update due to administrative changes. Always refer to the latest annual "Postal Code Directory" by Japan Post.