JP Japan Major Regions Postal Code Details
🏛️ Chiba · Kanto
270-1141
Abiko-shi
289-2524
Asahi-shi
297-0103
Chonan-machi
299-4323
Chosei-mura
288-0054
Choshi-shi
260-0001
Chuo-ku
274-0824
Funabashi-shi
299-1742
Futtsu-shi
262-0011
Hanamigawa-ku
290-0223
Ichihara-shi
272-0033
Ichikawa-shi
299-4316
Ichinomiya-machi
263-0011
Inage-ku
270-1318
Inzai-shi
298-0001
Isumi-shi
273-0126
Kamagaya-shi
299-2864
Kamogawa-shi
277-0812
Kashiwa-shi
289-0404
Katori-shi
299-5223
Katsuura-shi
299-1125
Kimitsu-shi
292-0022
Kisarazu-shi
271-0062
Matsudo-shi
267-0064
Midori-ku
261-7131
Mihama-ku
299-2212
Minamiboso-shi
297-0000
Mobara-shi
299-4414
Mutsuzawa-machi
297-0235
Nagara-machi
270-0114
Nagareyama-shi
275-0022
Narashino-shi
286-0825
Narita-shi
278-0002
Noda-shi
299-3202
Oamishirasato-shi
299-5112
Onjuku-machi
298-0267
Otaki-machi
270-1505
Sakae-machi
285-0009
Sakura-shi
289-1216
Sanmu-shi
282-0033
Shibayama-machi
299-4211
Shirako-machi
270-1402
Shiroi-shi
285-0924
Shisui-machi
299-0255
Sodegaura-shi
289-2177
Sosa-shi
289-2316
Tako-machi
294-0222
Tateyama-shi
283-0048
Togane-shi
286-0223
Tomisato-shi
289-0622
Tonosho-machi
279-0023
Urayasu-shi
265-0062
Wakaba-ku
289-1131
Yachimata-shi
276-0011
Yachiyo-shi
289-1747
Yokoshibahikari-machi
284-0025
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.