JP Japan Major Regions Postal Code Details
🏛️ Nagano · Chubu
395-0300
Achi-mura
399-5603
Agematsu-machi
399-1501
Anan-cho
386-1606
Aoki-mura
390-1101
Asahi-mura
399-8203
Azumino-shi
399-7503
Chikuhoku-mura
387-0011
Chikuma-shi
391-0003
Chino-shi
399-0102
Fujimi-machi
399-9211
Hakuba-mura
391-0116
Hara-mura
395-0601
Hiraya-mura
399-2562
Iida-shi
399-3705
Iijima-machi
389-2257
Iiyama-shi
389-1222
Iizuna-machi
399-8604
Ikeda-machi
399-7200
Ikusaka-mura
396-0402
Ina-shi
389-0111
Karuizawa-machi
384-1401
Kawakami-mura
389-2300
Kijimadaira-mura
397-0101
Kiso-machi
399-6203
Kiso-mura
384-1201
Kitaaiki-mura
399-4107
Komagane-shi
384-0000
Komoro-shi
384-1100
Koumi-machi
399-3302
Matsukawa-machi
399-8501
Matsukawa-mura
390-1504
Matsumoto-shi
384-1211
Minamiaiki-mura
384-1304
Minamimaki-mura
399-4511
Minamiminowa-mura
399-4603
Minowa-machi
399-4301
Miyada-mura
389-0208
Miyota-machi
381-0076
Nagano-shi
386-0601
Nagawa-machi
399-5301
Nagiso-machi
399-3803
Nakagawa-mura
383-0054
Nakano-shi
395-0701
Neba-mura
389-2503
Nozawaonsen-mura
381-0200
Obuse-machi
381-3301
Ogawa-mura
394-0023
Okaya-shi
399-5500
Okuwa-mura
399-9101
Omachi-shi
399-7702
Omi-mura
399-3502
Oshika-mura
397-0201
Otaki-mura
399-9422
Otari-mura
389-2703
Sakae-mura
389-0604
Sakaki-machi
385-0006
Saku-shi
384-0703
Sakuho-machi
399-2101
Shimojo-mura
393-0072
Shimosuwa-machi
389-1315
Shinano-machi
399-0700
Shiojiri-shi
392-0003
Suwa-shi
382-0005
Suzaka-shi
395-1103
Takagi-mura
399-3104
Takamori-machi
382-0804
Takayama-mura
384-2309
Tateshina-machi
399-0422
Tatsuno-machi
399-1200
Tenryu-mura
389-0513
Tomi-shi
399-3311
Toyooka-mura
386-0508
Ueda-shi
399-1601
Urugi-mura
390-1301
Yamagata-mura
381-0400
Yamanouchi-machi
399-1801
Yasuoka-mura
📮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.