JP Japan Major Regions Postal Code Details
🏛️ Niigata · Chubu
959-4507
Aga-machi
959-2201
Agano-shi
956-0831
Akiha-ku
958-0061
Awashimaura-mura
950-0088
Chuo-ku
959-1644
Gosen-shi
950-0015
Higashi-ku
941-0041
Itoigawa-shi
949-4321
Izumozaki-machi
942-1101
Joetsu-shi
959-1342
Kamo-shi
945-0304
Kariwa-mura
945-0824
Kashiwazaki-shi
950-3345
Kita-ku
950-0122
Konan-ku
949-6424
Minamiuonuma-shi
954-0101
Mitsuke-shi
958-0835
Murakami-shi
944-0341
Myoko-shi
940-0023
Nagaoka-shi
950-1325
Nishikan-ku
947-0035
Ojiya-shi
952-0711
Sado-shi
959-1124
Sanjo-shi
957-0115
Seiro-machi
959-3223
Sekikawa-mura
957-0026
Shibata-shi
959-1522
Tagami-machi
959-2814
Tainai-shi
948-0042
Tokamachi-shi
959-1213
Tsubame-shi
949-8312
Tsunan-machi
946-0225
Uonuma-shi
959-0312
Yahiko-mura
949-6103
Yuzawa-machi
📮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.