Japan Postal Code Database

Browse postal code data for Japan.

Country Information

CountryJapan
ISO CodeJP / JPN
LanguageJapanese
Total Records146,447

Japan uses a numeric code of 7 digits (e.g. 123-4567). Seven-digit postal code displayed as NNN-NNNN.

This database currently holds 146,447 postal codes ranging from 001-0000 to 999-8531, linked to 0 building and address records. Because a single postal code can cover more than one locality or delivery point, the lookup below groups addresses by code and lets you drill into the individual records.

Postal codes matter well beyond mail delivery. Couriers, e-commerce checkout forms and address autocomplete tools rely on the postal code to route a parcel and to verify that the stated address matches the code. Addresses here are organised as Prefecture → Municipality → Ward / District / Locality. When you look up a code here, treat the associated name as a reference point rather than a full postal address — always confirm the street and house number with the sender or recipient before shipping.

Data source: a third-party open dataset. This is an imported reference dataset, not a live government feed; CodeReff does not independently verify each record, so codes may have changed since the snapshot was taken. Use the search box to look up a specific code, or browse the paginated table below.

Japan Postal Code Data

142,577 postal code found

Postal Code Prefecture Municipality Ward / District / Locality Building / Place Records
999-8302 Yamagata Ken Yoshide Akumi Gun Akumi Gun 1
999-8303 Yamagata Ken Nozawa Akumi Gun Akumi Gun 1
999-8304 Yamagata Ken Shiraishinden Akumi Gun Akumi Gun 1
999-8311 Yamagata Ken Oharada Akumi Gun Akumi Gun 1
999-8312 Yamagata Ken Kanosawa Akumi Gun Akumi Gun 1
999-8313 Yamagata Ken Sugisawa Akumi Gun Akumi Gun 1
999-8314 Yamagata Ken Kamiwarabioka Akumi Gun Akumi Gun 1
999-8315 Yamagata Ken Owarabioka Akumi Gun Akumi Gun 1
999-8316 Yamagata Ken Toyoka Akumi Gun Akumi Gun 1
999-8317 Yamagata Ken Komatsu Akumi Gun Akumi Gun 1
999-8421 Yamagata Ken Yoneshima Sakata Shi Sakata Shi 1
999-8422 Yamagata Ken Chiyoda Sakata Shi Sakata Shi 1
999-8423 Yamagata Ken Miyauchi Sakata Shi Sakata Shi 1
999-8431 Yamagata Ken Sugasato(Jurizuka) Akumi Gun Akumi Gun 1
999-8432 Yamagata Ken Miyada Akumi Gun Akumi Gun 1
999-8433 Yamagata Ken Eji Akumi Gun Akumi Gun 1
999-8434 Yamagata Ken Masuho Akumi Gun Akumi Gun 1
999-8435 Yamagata Ken Shoizumi Akumi Gun Akumi Gun 1
999-8436 Yamagata Ken Iwagawa Akumi Gun Akumi Gun 1
999-8437 Yamagata Ken Fujisaki Akumi Gun Akumi Gun 1
999-8438 Yamagata Ken Hiko Akumi Gun Akumi Gun 1
999-8521 Yamagata Ken Fukura Akumi Gun Akumi Gun 1
999-8522 Yamagata Ken Kitame Akumi Gun Akumi Gun 1
999-8523 Yamagata Ken Toyama Akumi Gun Akumi Gun 1
999-8524 Yamagata Ken Tomioka Akumi Gun Akumi Gun 1
999-8525 Yamagata Ken Suguse Akumi Gun Akumi Gun 1
999-8531 Yamagata Ken Sugasato(Sonota) Akumi Gun Akumi Gun 1

Postal Codes by Region

Hokkaido (9,426) Aichi Ken (9,241) Tokyo To (8,751) Kyoto Fu (6,714) Niigata Ken (6,013) Hyogo Ken (5,667) Osaka Fu (4,717) Fukushima Ken (4,280) Chiba Ken (4,225) Fukuoka Ken (4,144) Miyagi Ken (3,816) Gifu Ken (3,795) Shizuoka Ken (3,702) Saitama Ken (3,654) Toyama Ken (3,607) Ibaraki Ken (3,156) Kanagawa Ken (3,109) Ishikawa Ken (3,001) Mie Ken (2,787) Aomori Ken (2,732) Hiroshima Ken (2,657) Okayama Ken (2,573) Fukui Ken (2,545) Akita Ken (2,303) Nagano Ken (2,274) Iwate Ken (2,264) Kumamoto Ken (2,153) Nagasaki Ken (2,110) Yamagata Ken (2,103) Nara Ken (2,097)

Postal Codes by City

Hommachi (355) Chuo (295) Sakaemachi (212) Shimmachi (198) Motomachi (166) Asahimachi (164) Marunochi (150) Nakamachi (142) Odecho (133) Saiwaicho (132) Midoricho (131) Minamimachi (125) Honcho (125) Higashimachi (122) Midorigaoka (120) Hongo (118) Nishimachi (110) Chuocho (104) Minatomachi (103) Izumicho (100) Asahicho (99) Nakano (98) Kotobukicho (98) Izumi (95) Nishishinshuku (95) Yamada (92) Suehirocho (91) Saiwaimachi (91) Sakae (90) Akasaka (84)

Frequently Asked Questions

Japan uses a numeric code of 7 digits (e.g. 123-4567). Seven-digit postal code displayed as NNN-NNNN.
Yes. Japan postal codes are a plain numeric string, so a leading zero is part of the code itself. A code beginning with 0 must be written and stored with that zero — it is not the same as the same digits without it.
146,447 This database currently lists
The records are imported from a third-party open dataset, an open reference dataset. CodeReff does not independently verify each entry, so use the information as a reference rather than an official confirmation.
Enter a full or partial postal code, or a building or street name, in the search box above. You can also browse the paginated table and open any code to see its building and address records.

Related Pages

Postcodes Postal Code ZIP Code Japan country page Postcode Finder
Information provided on CodeReff is for reference purposes only. Always verify financial and banking details with the relevant institution before use.