JP Japan Major Regions Postal Code Details
🏛️ Ibaraki · Kanto
300-1157Ami-machi
Ami-machi ibaraki kanto 300-1157 Japan
306-0631Bando-shi
Bando-shi ibaraki kanto 306-0631 Japan
300-4505Chikusei-shi
Chikusei-shi ibaraki kanto 300-4505 Japan
319-3536Daigo-machi
Daigo-machi ibaraki kanto 319-3536 Japan
306-0300Goka-machi
Goka-machi ibaraki kanto 306-0300 Japan
317-0053Hitachi-shi
Hitachi-shi ibaraki kanto 317-0053 Japan
311-1255Hitachinaka-shi
Hitachinaka-shi ibaraki kanto 311-1255 Japan
319-2227Hitachiomiya-shi
Hitachiomiya-shi ibaraki kanto 319-2227 Japan
313-0021Hitachiota-shi
Hitachiota-shi ibaraki kanto 313-0021 Japan
311-1414Hokota-shi
Hokota-shi ibaraki kanto 311-1414 Japan
311-3104Ibaraki-machi
Ibaraki-machi ibaraki kanto 311-3104 Japan
301-0901Inashiki-shi
Inashiki-shi ibaraki kanto 301-0901 Japan
315-0148Ishioka-shi
Ishioka-shi ibaraki kanto 315-0148 Japan
311-2431Itako-shi
Itako-shi ibaraki kanto 311-2431 Japan
300-2505Joso-shi
Joso-shi ibaraki kanto 300-2505 Japan
314-0143Kamisu-shi
Kamisu-shi ibaraki kanto 314-0143 Japan
309-1712Kasama-shi
Kasama-shi ibaraki kanto 309-1712 Japan
314-0015Kashima-shi
Kashima-shi ibaraki kanto 314-0015 Japan
300-0214Kasumigaura-shi
Kasumigaura-shi ibaraki kanto 300-0214 Japan
300-1403Kawachi-machi
Kawachi-machi ibaraki kanto 300-1403 Japan
319-1500Kitaibaraki-shi
Kitaibaraki-shi ibaraki kanto 319-1500 Japan
306-0044Koga-shi
Koga-shi ibaraki kanto 306-0044 Japan
300-0406Miho-mura
Miho-mura ibaraki kanto 300-0406 Japan
310-0911Mito-shi
Mito-shi ibaraki kanto 310-0911 Japan
302-0116Moriya-shi
Moriya-shi ibaraki kanto 302-0116 Japan
311-0104Naka-shi
Naka-shi ibaraki kanto 311-0104 Japan
311-3518Namegata-shi
Namegata-shi ibaraki kanto 311-3518 Japan
311-1311Oarai-machi
Oarai-machi ibaraki kanto 311-1311 Japan
311-3417Omitama-shi
Omitama-shi ibaraki kanto 311-3417 Japan
301-0856Ryugasaki-shi
Ryugasaki-shi ibaraki kanto 301-0856 Japan
306-0402Sakai-machi
Sakai-machi ibaraki kanto 306-0402 Japan
309-1243Sakuragawa-shi
Sakuragawa-shi ibaraki kanto 309-1243 Japan
304-0053Shimotsuma-shi
Shimotsuma-shi ibaraki kanto 304-0053 Japan
311-4311Shirosato-machi
Shirosato-machi ibaraki kanto 311-4311 Japan
318-0034Takahagi-shi
Takahagi-shi ibaraki kanto 318-0034 Japan
319-1102Tokai-mura
Tokai-mura ibaraki kanto 319-1102 Japan
300-1621Tone-machi
Tone-machi ibaraki kanto 300-1621 Japan
302-0012Toride-shi
Toride-shi ibaraki kanto 302-0012 Japan
300-0038Tsuchiura-shi
Tsuchiura-shi ibaraki kanto 300-0038 Japan
300-1274Tsukuba-shi
Tsukuba-shi ibaraki kanto 300-1274 Japan
300-2355Tsukubamirai-shi
Tsukubamirai-shi ibaraki kanto 300-2355 Japan
300-1222Ushiku-shi
Ushiku-shi ibaraki kanto 300-1222 Japan
300-3538Yachiyo-machi
Yachiyo-machi ibaraki kanto 300-3538 Japan
307-0003Yuki-shi
Yuki-shi ibaraki kanto 307-0003 Japan
📋 Japan Address and Delivery Guidance
📮
Use a Complete Delivery Address:
Include the recipient name, building or street address, locality, region where applicable, postal code when the destination uses one, and the destination country or territory.
🌍
Follow Local Address Conventions:
Use the language, character set and address order requested by the recipient, official postal operator or carrier. Do not assume every destination uses the same postal-code format.
✅
Verify Before Dispatch:
Confirm the postal code, service coverage and any customs or carrier requirements with the recipient and the relevant official postal operator before shipping.
💡
Delivery Information Is Context-Specific:
Postal codes help routing only in territories that use them. Accurate recipient details remain essential for delivery in every destination.
Postal information, sources and verification
Use this page as a routing reference and confirm the complete address, postal code format and delivery restrictions with the relevant official postal operator or carrier before dispatch.
Editorial and service accountability
This postal-code reference is maintained by the 56ok.com logistics-content team for international shipping preparation. It is reviewed against publicly available postal-operator information; it is not an official postal authority and does not replace carrier or customs instructions.
This reference is maintained as postal and carrier information changes. Need a correction? Contact our team.
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📮Japan Postal FAQ and delivery guidance
🔢 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.
