JP Japan Major Regions Postal Code Details
🏛️ Chiba · Kanto
270-1154
Abiko-shi
289-2512
Asahi-shi
297-0112
Chonan-machi
299-4335
Chosei-mura
288-0805
Choshi-shi
260-0823
Chuo-ku
273-0855
Funabashi-shi
299-1602
Futtsu-shi
262-0046
Hanamigawa-ku
290-0502
Ichihara-shi
272-0831
Ichikawa-shi
299-4314
Ichinomiya-machi
263-0035
Inage-ku
270-1326
Inzai-shi
298-0018
Isumi-shi
273-0123
Kamagaya-shi
296-0123
Kamogawa-shi
277-0858
Kashiwa-shi
289-0338
Katori-shi
299-5263
Katsuura-shi
299-1127
Kimitsu-shi
292-0023
Kisarazu-shi
271-0071
Matsudo-shi
266-0011
Midori-ku
261-0005
Mihama-ku
299-2413
Minamiboso-shi
299-4116
Mobara-shi
299-4412
Mutsuzawa-machi
297-0218
Nagara-machi
270-0118
Nagareyama-shi
275-0028
Narashino-shi
287-0214
Narita-shi
270-0232
Noda-shi
299-3217
Oamishirasato-shi
299-5111
Onjuku-machi
298-0216
Otaki-machi
270-1502
Sakae-machi
285-0045
Sakura-shi
289-1344
Sanmu-shi
289-1605
Shibayama-machi
299-4204
Shirako-machi
270-1439
Shiroi-shi
285-0924
Shisui-machi
299-0263
Sodegaura-shi
289-2115
Sosa-shi
289-2324
Tako-machi
294-0011
Tateyama-shi
283-0804
Togane-shi
286-0201
Tomisato-shi
289-0635
Tonosho-machi
279-0023
Urayasu-shi
265-0045
Wakaba-ku
289-1101
Yachimata-shi
276-0036
Yachiyo-shi
289-1753
Yokoshibahikari-machi
284-0008
Yotsukaido-shi
📮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.