INI
Japanese Prefecture Codes - INI
The Japanese Prefecture Code is a two-digit numerical code system defined by JIS X 0401 for identifying Japan's 47 prefectures. It was introduced in 1968 by the Ministry of Home Affairs (now the Ministry of Internal Affairs and Communications) to streamline administrative processes. The codes are assigned from 01 to 47, generally following a geographical order from northeast to southwest, with Hokkaido as 01 and Okinawa as 47. This coding system has been adopted as ISO 3166-2:JP and is widely used as an international standard for identifying Japanese regions.
JIS standard
administrative division
local government
ISO 3166-2
Ministry of Internal Affairs
[item.hokkaido]
code=01
slug=hokkaido
name=Hokkaido
description=Japan's northernmost and largest prefecture by area.
region=Hokkaido Region
[item.aomori]
code=02
slug=aomori
name=Aomori
description=Located at the northernmost tip of Honshu, famous for being Japan's top apple producer.
region=Tohoku Region
[item.iwate]
code=03
slug=iwate
name=Iwate
description=The largest prefecture in Honshu by area, with rich natural beauty and historical culture.
region=Tohoku Region
[item.miyagi]
code=04
slug=miyagi
name=Miyagi
description=Home to Sendai City, the central city of the Tohoku region.
region=Tohoku Region
[item.akita]
code=05
slug=akita
name=Akita
description=Known as a major rice-producing area with traditional cultures such as Namahage.
region=Tohoku Region
[item.yamagata]
code=06
slug=yamagata
name=Yamagata
description=Japan's top cherry producer, home to sacred mountains including Dewa Sanzan.
region=Tohoku Region
[item.fukushima]
code=07
slug=fukushima
name=Fukushima
description=The largest prefecture in Tohoku by area, known for the historical culture of Aizu region.
region=Tohoku Region
[item.ibaraki]
code=08
slug=ibaraki
name=Ibaraki
description=Among the top in agricultural output nationwide, home to Tsukuba Science City.
region=Kanto Region
[item.tochigi]
code=09
slug=tochigi
name=Tochigi
description=Home to Nikko Toshogu Shrine and Japan's top strawberry producer.
region=Kanto Region
[item.gunma]
code=10
slug=gunma
name=Gunma
description=Known for numerous hot spring resorts including Kusatsu Onsen and a thriving automobile industry.
region=Kanto Region
[item.saitama]
code=11
slug=saitama
name=Saitama
description=Adjacent to Tokyo, forming a major metropolitan area with the 5th largest population in Japan.
region=Kanto Region
[item.chiba]
code=12
slug=chiba
name=Chiba
description=Home to Narita International Airport and Tokyo Disney Resort.
region=Kanto Region
[item.tokyo]
code=13
slug=tokyo
name=Tokyo
description=Japan's capital and the center of politics, economy, and culture.
region=Kanto Region
[item.kanagawa]
code=14
slug=kanagawa
name=Kanagawa
description=Home to two designated cities: Yokohama and Kawasaki.
region=Kanto Region
[item.niigata]
code=15
slug=niigata
name=Niigata
description=One of Japan's leading rice-producing areas, known for Koshihikari rice.
region=Chubu Region
[item.toyama]
code=16
slug=toyama
name=Toyama
description=Known for the Tateyama Mountain Range and its pharmaceutical industry.
region=Chubu Region
[item.ishikawa]
code=17
slug=ishikawa
name=Ishikawa
description=Rich in the history of Kaga domain and thriving traditional crafts.
region=Chubu Region
[item.fukui]
code=18
slug=fukui
name=Fukui
description=Known for dinosaur fossil discoveries and eyeglass frame production.
region=Chubu Region
[item.yamanashi]
code=19
slug=yamanashi
name=Yamanashi
description=Located at the northern foot of Mount Fuji, known for grape and wine production.
region=Chubu Region
[item.nagano]
code=20
slug=nagano
name=Nagano
description=Home to the Japanese Alps and thriving highland vegetable cultivation.
region=Chubu Region
[item.gifu]
code=21
slug=gifu
name=Gifu
description=Known for historical landscapes including Hida-Takayama and Shirakawa-go.
region=Chubu Region
[item.shizuoka]
code=22
slug=shizuoka
name=Shizuoka
description=Facing Mount Fuji and Japan's top tea producer.
region=Chubu Region
[item.aichi]
code=23
slug=aichi
name=Aichi
description=Home to Toyota Motor Corporation and one of Japan's leading industrial prefectures.
region=Chubu Region
[item.mie]
code=24
slug=mie
name=Mie
description=Home to Ise Grand Shrine and known as the birthplace of pearl cultivation.
region=Kinki Region
[item.shiga]
code=25
slug=shiga
name=Shiga
description=Home to Lake Biwa, Japan's largest lake.
region=Kinki Region
[item.kyoto]
code=26
slug=kyoto
name=Kyoto
description=An ancient capital with over a thousand years of history and numerous World Heritage Sites.
region=Kinki Region
[item.osaka]
code=27
slug=osaka
name=Osaka
description=Forms the largest metropolitan area in western Japan and thrives as a commercial center.
region=Kinki Region
[item.hyogo]
code=28
slug=hyogo
name=Hyogo
description=Home to Kobe Port, stretching from the Sea of Japan to the Seto Inland Sea.
region=Kinki Region
[item.nara]
code=29
slug=nara
name=Nara
description=Site of Japan's first capital, rich in ancient historical sites.
region=Kinki Region
[item.wakayama]
code=30
slug=wakayama
name=Wakayama
description=Home to sacred sites including Mount Koya and Kumano Kodo, known for mandarin orange production.
region=Kinki Region
[item.tottori]
code=31
slug=tottori
name=Tottori
description=Known for Tottori Sand Dunes and the least populated prefecture in Japan.
region=Chugoku Region
[item.shimane]
code=32
slug=shimane
name=Shimane
description=Home to Izumo Grand Shrine, known as the setting of Japanese mythology.
region=Chugoku Region
[item.okayama]
code=33
slug=okayama
name=Okayama
description=Known as the 'Land of Sunshine' and considered the birthplace of the Momotaro legend.
region=Chugoku Region
[item.hiroshima]
code=34
slug=hiroshima
name=Hiroshima
description=Home to two World Heritage Sites: the Atomic Bomb Dome and Itsukushima Shrine.
region=Chugoku Region
[item.yamaguchi]
code=35
slug=yamaguchi
name=Yamaguchi
description=Located at the westernmost tip of Honshu, famous for fugu (pufferfish) cuisine.
region=Chugoku Region
[item.tokushima]
code=36
slug=tokushima
name=Tokushima
description=Known for Awa Odori dance and Japan's top sudachi citrus producer.
region=Shikoku Region
[item.kagawa]
code=37
slug=kagawa
name=Kagawa
description=Famous for Sanuki udon noodles and Japan's smallest prefecture by area.
region=Shikoku Region
[item.ehime]
code=38
slug=ehime
name=Ehime
description=Top mandarin orange producer and home to Dogo Onsen hot spring.
region=Shikoku Region
[item.kochi]
code=39
slug=kochi
name=Kochi
description=Birthplace of Sakamoto Ryoma, famous for katsuo no tataki (seared bonito).
region=Shikoku Region
[item.fukuoka]
code=40
slug=fukuoka
name=Fukuoka
description=Forms Kyushu's largest metropolitan area, known for Hakata ramen.
region=Kyushu Region
[item.saga]
code=41
slug=saga
name=Saga
description=Known for ceramics such as Arita ware and Imari ware.
region=Kyushu Region
[item.nagasaki]
code=42
slug=nagasaki
name=Nagasaki
description=An exotic port city with World Heritage Hidden Christian Sites.
region=Kyushu Region
[item.kumamoto]
code=43
slug=kumamoto
name=Kumamoto
description=Home to Kumamoto Castle and Mount Aso, known for mascot Kumamon.
region=Kyushu Region
[item.oita]
code=44
slug=oita
name=Oita
description=Japan's top hot spring prefecture in both number of sources and output volume.
region=Kyushu Region
[item.miyazaki]
code=45
slug=miyazaki
name=Miyazaki
description=Known for its warm climate, tropical atmosphere, and thriving mango production.
region=Kyushu Region
[item.kagoshima]
code=46
slug=kagoshima
name=Kagoshima
description=Home to Sakurajima volcano, known for Kurobuta pork and shochu.
region=Kyushu Region
[item.okinawa]
code=47
slug=okinawa
name=Okinawa
description=Japan's southernmost prefecture, known for Ryukyu culture and beautiful seas.
region=Kyushu Region