JP Japan Major Regions Postal Code Details
🏛️ 秋田県 · 東北地方
018-0167
にかほ市
018-2405
三種町
018-4400
上小阿仁村
018-1856
五城目町
018-1522
井川町
014-0331
仙北市
018-2602
八峰町
018-1631
八郎潟町
018-4735
北秋田市
014-0006
大仙市
010-0453
大潟村
017-0816
大館市
017-0203
小坂町
019-0802
東成瀬村
013-0412
横手市
012-0868
湯沢市
018-1413
潟上市
015-0221
由利本荘市
010-0687
男鹿市
010-0000
秋田市
019-1301
美郷町
012-1102
羽後町
016-0137
能代市
018-3204
藤里町
018-5337
鹿角市
📮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.