JP Japan Major Regions Postal Code Details
🏛️ 山口県 · 中国地方
742-1401
上関町
744-0003
下松市
751-0845
下関市
743-0001
光市
746-0026
周南市
742-2714
周防大島町
740-0062
和木町
754-1312
宇部市
753-0222
山口市
756-0054
山陽小野田市
742-0344
岩国市
742-1104
平生町
742-0023
柳井市
742-1502
田布施町
759-2142
美祢市
759-3111
萩市
759-4103
長門市
747-0848
防府市
759-3600
阿武町
📮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.