Ibaraki Prefecture

Mito, the capital, is the largest city in Ibaraki Prefecture. Other major cities include Tsukuba, Hitachi, and Hitachinaka. Located on Japan's eastern Pacific coast to the northeast of Tokyo, and is part of the Greater Tokyo Area, the most populous metropolitan area in the world. Prefecture features Lake Kasumigaura, the second-largest lake in Japan; the Tone River, Japan's second-longest river and largest drainage basin; and Mount Tsukuba, one of the most famous mountains in Japan. Also home to Kairaku-en, one of the Three Great Gardens of Japan, and is an important center for the martial art of Aikido.

• Name — Ibaraki Prefecture • Type — Prefecture • Translit Lang1 — Japanese • Translit Lang1 Type — Japanese • Translit Lang1 Info — 茨城県 • Translit Lang1 Type1 — Rōmaji • Translit Lang1 Info1 — Ibaraki-ken • Image Flag — Flag of Ibaraki Prefecture.svg • Flag Size — 100px • Image Blank Emblem — Emblem of Ibaraki Prefecture.svg • Blank Emblem Size — 80px • Blank Emblem Type — Symbol • Image Map — Map of Japan with highlight on 08 Ibaraki prefecture.svg • Subdivision Type — Country • Subdivision Name — Japan • Subdivision Type1 — Island • Subdivision Name1 — Honshu • Subdivision Type2 — Region • Subdivision Name2 — Kantō • Subdivision Type3 — Prefecture • Subdivision Name3 — Ibaraki • Seat Type — Capital • Seat — Mito • Parts Type — Subdivisions • Parts Style — para • P1 — Districts: 7 • P2 — Municipalities: 44 • Leader Title — Governor • Leader Name — Kazuhiko Ōigawa • Area Total Km2 — 6,097.19 • Area Water Percent — 4.8 • Area Rank — 24th • Population Total — 2791231 • Population As Of — November 1, 2025 • Population Rank — 11th • Population Density Km2 — auto • Demographics Type2 — GDP • Demographics2 Title1 — Total • Demographics2 Info1 — JP¥ 14,586 billion US$ 107.7 billion (2022) • Iso Code — JP-08 • Website — http: www.pref.ibaraki.jp/ • Population Blank2 Title — Dialect • Population Blank2 — Ibaraki dialect • Anthem — Ibaraki kenmin no uta • Illustration — Ibaraki Prefectural Office and Headquarters in Mito Ibaraki Prefecture is a prefecture of Japan located in the Kantō region of Honshu. Ibaraki Prefecture has a population of 2,828,086 (1 July 2023) and has a geographic area of 6,097.19 km2. Ibaraki Prefecture borders Fukushima Prefecture to the north, Tochigi Prefecture to the northwest, Saitama Prefecture to the southwest, Chiba Prefecture to the south, and the Pacific Ocean to the east. Mito, the capital, is the largest city in Ibaraki Prefecture. Other major cities include Tsukuba, Hitachi, and Hitachinaka. Ibaraki Prefecture is located on Japan's eastern Pacific coast to the northeast of Tokyo, and is part of the Greater Tokyo Area, the most populous metropolitan area in the world. Ibaraki Prefecture features Lake Kasumigaura, the second-largest lake in Japan; the Tone River, Japan's second-longest river and largest drainage basin; and Mount Tsukuba, one of the most famous mountains in Japan. Ibaraki Prefecture is also home to Kairaku-en, one of the Three Great Gardens of Japan, and is an important center for the martial art of Aikido.

Ibaraki Prefecture was previously known as Hitachi Province. In 1871, the name of the province became Ibaraki, and in 1875 it became its current size, by annexing some districts belonging to the extinct Shimōsa Province. • Illustration — Kamitakatsu Shell Mound in Tsuchiura

In the Japanese Paleolithic, humans are believed to have started living in the present-day prefecture area before and after the deposition of the volcanic ash layer from the Aira Caldera about 24,000 years ago. At the bottom of this layer are local tools of polished stone and burnt pebbles.

During the Asuka period the provinces of Hitachi and Fusa were created. Later Fusa was divided, among them, the Shimōsa Province.

At the beginning of the Muromachi period, in the 14th century, Kitabatake Chikafusa made of the Oda Castle his field headquarters for over a year, and wrote the Jinnō Shōtōki (Chronicles of the Authentic Lineages of the Divine Emperors), while he was at castle. • Illustration — Lake Kasumigaura in Ushibori Village (Hitachi Province), Mount Fuji in the background; 19th century of the Edo period. Hokusai, painter and printmaker

During the Edo period, one of the three houses or clans originating from Tokugawa Ieyasu (Gosanke 御 三家, three houses), settled in the Mito Domain, the clan is known as the Mito Tokugawa family or simply the Mito clan. Mito Domain, was a Japanese domain of the Edo-period Hitachi Province. In 1657, a Mitogaku was created when Tokugawa Mitsukuni, head of the Mito Domain, commissioned the compilation of the Dai Nihonshi, a book on the history of Japan.

During the Meiji Restoration, old provinces were converted or merged to create the current prefectures, in this case Ibaraki Prefecture.

• Illustration — Rivers Shintone (left) and Tone (right), Inashiki and Kawachi areas • Illustration — Map of Ibaraki Prefecture • Illustration — Mito • Illustration — Tsukuba • Illustration — Hitachi Sakura Festival • Illustration — Tsuchiura • Illustration — Ushiku Ibaraki Prefecture is the northeastern part of the Kantō region, stretching between Tochigi Prefecture and the Pacific Ocean and bounded on the north and south by Fukushima Prefecture and Chiba Prefecture. It also has a border on the southwest with Saitama Prefecture. The northernmost part of the prefecture is mountainous, but most of the prefecture is a flat plain with many lakes and is part of Kantō Plain.

As of 2012 04, 15% of the total land area of the prefecture was designated as Natural Parks, namely Suigo-Tsukuba Quasi-National Park, and nine Prefectural Natural Parks. Also, Ibaraki has one Prefectural Geopark. The Suigo-Tsukuba Quasi-National Park, also includes the northeast area of Chiba Prefecture.

The northern third of the prefecture is mountainous and in the center is the Tsukuba Mountains (筑波 山地). Its main mountains are: mount Yamizo with an elevation of 1022 m on the border with Fukushima and Tochigi prefectures (tripoint), mount Takasasa with 922 m, mount Tsukuba with two peaks Nyotai-San at 877 m and Nantai-San at 871 m, mount Osho at 804 m, mount Hanazono at 798 m, and mount Kaba at 709 m.

The main rivers that flow through the prefecture include the Tone, Naka (Ibaraki), and Kuji rivers, all of which flow into the Pacific Ocean. Before the seventeenth century, the lower reaches of the Tone were different from its current layout, and the Tone ran south and emptied into Tokyo Bay, and tributaries such as the Watarase and Kinu rivers had independent water systems. The main tributaries of the Tone River basin are the Kinu River and Kokai River, which flow from north to south in the western part of the prefecture. The Shintone and Sakura rivers flow into Lake Nishiura. The Edo River flows into Tokyo Bay; its source currently rises as an arm of the Tone River. In the past, the course of the Edo River was different, its source was corrected and diverted to the Tone River in the 17th century by the Tokugawa shogunate to protect the city of Edo (now Tokyo) from flooding. The Tone River, in addition to the Edo River, is part of the southern border of Ibaraki Prefecture with Chiba Prefecture, and the Watarase River, Tone River, Gongendō River, and Naka River (Saitama) in the southwestern border of Ibaraki with Saitama Prefecture. The Watarase River has become a small boundary of the southern border between Ibaraki and Tochigi prefectures. From ancient times to the beginning of the Edo period, the lower reaches of the Tone River did not exist and the mouth of the Tone was in Tokyo Bay. On the plain was the Katori Sea, which existed in ancient times, the Lake Kasumigaura and other lagoons in present-day Chiba prefecture are remnants of that sea. Katori Sea was connected to the Kashima-nada (Pacific Ocean). Lake Kasumigaura is currently divided into three lakes: Nishiura, Kitaura, Sotonasakaura. In addition, in the prefecture there are freshwater lagoons such as Hinuma, Senba, and Ushiku. Fukuoka Dam, is a dam that spans the Kokai River in Tsukubamirai, it is one of the three largest dams in the Kantō region. Ryūjin Dam in Hitachiōta, is a beautiful dam on the Ryūjin River with a large pedestrian suspension bridge above the dam lake.

Thirty-two (32) cities are located in Ibaraki Prefecture: • Name — Area (km 2) — Population — Map • Rōmaji — Kanji • Bandō — 坂東市 — 123.03 — 51,577 — • Chikusei — 筑西市 — 205.30 — 98,031 — • Hitachi — 日立市 — 225.71 — 165,822 — • Hitachinaka — ひたちなか市 — 99.96 — 154,631 — • Hitachiōmiya — 常陸大宮市 — 348.45 — 39,176 — • Hitachiōta — 常陸太田市 — 371.99 — 47,922 — • Hokota — 鉾田市 — 207.61 — 45,886 — • Inashiki — 稲敷市 — 205.81 — 38,353 — • Ishioka — 石岡市 — 215.53 — 70,124 — • Itako — 潮来市 — 71.40 — 27,512 — • Jōsō — 常総市 — 123.64 — 59,314 — • Kamisu — 神栖市 — 146.94 — 95,396 — • Kasama — 笠間市 — 240.40 — 73,664 — • Kashima — 鹿嶋市 — 106.02 — 66,098 — • Kasumigaura — かすみがうら市 — 156.60 — 40,254 — • Kitaibaraki — 北茨城市 — 186.80 — 41,750 — • Koga — 古河市 — 123.58 — 137,512 — • Mito (capital) — 水戸市 — 217.32 — 268,036 — • Moriya — 守谷市 — 35.71 — 69,827 — • Naka — 那珂市 — 97.82 — 53,137 — • Namegata — 行方市 — 222.48 — 31,960 — • Omitama — 小美玉市 — 144.74 — 48,754 — • Ryūgasaki — 龍ケ崎市 — 78.55 — 75,212 — • Sakuragawa — 桜川市 — 180.06 — 38,905 — • Shimotsuma — 下妻市 — 80.88 — 41,621 — • Takahagi — 高萩市 — 193.58 — 27,522 — • Toride — 取手市 — 69.94 — 103,717 — • Tsuchiura — 土浦市 — 122.89 — 142,181 — • Tsukuba — つくば市 — 283.72 — 256,526 — • Tsukubamirai — つくばみらい市 — 79.16 — 51,035 — • Ushiku — 牛久市 — 58.92 — 83,826 — • Yūki — 結城市 — 65.76 — 49,252 —

These are the towns and villages in each district, 10 towns and 2 villages in 7 districts: • Name — Area (km 2) — Population — District — Map • Rōmaji — Kanji • Ami — 阿見町 — 71.40 — 47,927 — Inashiki District — • Daigo — 大子町 — 325.76 — 15,725 — Kuji District — • Goka — 五霞町 — 23.11 — 8,162 — Sashima District — • Ibaraki — 茨城町 — 121.58 — 31,412 — Higashiibaraki District — • Kawachi — 河内町 — 44.30 — 8,298 — Inashiki District — • Miho — 美浦村 — 66.61 — 14,504 — Inashiki District — • Ōarai — 大洗町 — 23.74 — 15,787 — Higashiibaraki District — • Sakai — 境町 — 46.59 — 24,061 — Sashima District — • Shirosato — 城里町 — 161.80 — 18,044 — Higashiibaraki District — • Tōkai — 東海村 — 37.98 — 37,641 — Naka District — • Tone — 利根町 — 24.90 — 15,073 — Kitasōma District — • Yachiyo — 八千代町 — 58.99 — 20,882 — Yūki District —

Ibaraki's economy is based on energy production (particularly nuclear energy), chemical and precision machining industries, research institutes, and tourism. Agriculture, fishing, and livestock are also important sectors in the prefecture. Ibaraki's vast flat terrain make it highly suitable for industrial development. This complements its proximity to the Tokyo metropolitan area, giving it a high reputation as an industrial base. The prefecture is also home to Tsukuba, Japan's most extensive research and academic city, and the birthplace of Hitachi, Ltd. • Illustration — Paddy field at the foot of Mt. Tsukuba • Illustration — Sweet potato field in Namegata

With extensive flat lands, abundant water, and suitable climate, Ibaraki is among the prefectures with the highest agricultural production in Japan. It plays an important role in supplying food to the Tokyo metropolitan area. Its main products include melons, pears, peppers, various varieties of rice and sugar cane, as well as flowers and ornamental plants. It also supplies other food crops to the rest of the country. As of March 2011, the prefecture produced 25% of Japan's bell peppers and Chinese cabbage.

It is one of the prefectures with the highest fish production in the country; in the Pacific Ocean, Lake Kasumigaura, other lagoons and rivers, various species of fish are obtained.

The Hitachigyū cattle (常 陸 牛 - ひたちぎゅう - Hitachi-gyū, Hitachi-ushi), which is a prefectural bovine breed, is noteworthy in livestock. The name comes from the kanji 常 陸 (Hitachi), the name of the ancient Hitachi Province and 牛 (ushi or gyū, beef). Background. In 1833 Tokugawa Nariaki (徳川 斉昭) established the breeding of black cattle in the present Migawa-chō (見川 町) of the city of Mito. Originally it remained mainly in the northern part of the prefecture, but later it spread throughout the prefecture. • Illustration — Cyberdyne Inc. in Tsukuba

• Hitachi area. Grouping of industries, such as electrical, electronic and machinery. More than 1,300 companies; many of them hired by the Hitachi company, which was founded in Sukegawa (Hitachi City) in 1910. • Tōkai area. Atomic Energy Research Organization Grouping. J-PARC, Proton Accelerator Research Complex. • Tsukuba area. 32 institutes for education and research. Manipulation of matter at the level of atoms (nanotechnology). Robotic security center for support in daily life. Space center. • Kashima area. Grouping of materials industries, such as steel and petrochemicals, around 160 companies.

• Illustration — Ibaraki prefecture population pyramid in 2020

Ibaraki is known for nattō, or fermented soybeans, in Mito, watermelons in Kyōwa (recently merged into Chikusei), and chestnuts in the Nishiibaraki region. Ibaraki is famous for the martial art of Aikido founded by Morihei Ueshiba, also known as Osensei. Ueshiba spent the latter part of his life in the town of Iwama, now part of Kasama, and the Aiki Shrine and dojo he created still remain. Kasama is famous for Shinto (Kasama Inari Shrine), Ibaraki Ceramic Art Museum, house museum of the calligrapher and ceramist Kitaōji Rosanjin, Kasama Nichidō Museum of Art, residence of Morihei Ueshiba, founder of the martial art Aikidō. The capital Mito is home to Kairakuen, one of Japan's three most celebrated gardens, and famous for its over 3,000 Japanese plum trees of over 100 varieties. Kashima Shrine (Jingū) Ibaraki's cultural heritage. Mito Tōshō-gū, is the memorial shrine of Tokugawa Ieyasu in Mito. Seizansō was the retirement villa of Tokugawa Mitsukuni. Mito Municipal Botanical Park, is a botanical garden in Mito. Park Ibaraki Nature Museum in Bandō. There are castle ruins in many cities, including Mito Castle, Yūki Castle, Kasama Castle, Tsuchiura Castle, Oda Castle. Hitachi Fūryūmono, a puppet float theater festival, Intangible Cultural Heritage of Humanity. Makabe Hina Doll Festival - Hinamatsuri - (Sakuragawa City). Yūki-tsumugi (silk weaving technique) Intangible Cultural Heritage of Humanity, Kasama ware, Makabe Stone Lamp, Kagami Crystal Glass Factory, old glass factory in Ryūgasaki City.

• Ami • Ibaraki Prefectural University of Health Sciences • Hitachi • Ibaraki Christian University • Illustration — Kōdōkan (Mito) • Mito • Ibaraki University • Tokiwa University • Ryūgasaki • Ryūtsū Keizai University • Toride • Tokyo University of the Arts • Tsuchiura • Tsukuba International University • Tsukuba • Tsukuba Gakuin University • Tsukuba University • Tsukuba University of Technology

The sports teams listed below are based in Ibaraki. • Illustration — Kashima Soccer Stadium • Illustration — Tsukuba Circuit

• Kashima Antlers (Kashima) • Mito HollyHock (Mito) • Tsukuba FC (Tsukuba)

• Hitachi Rivale (Women's) (Hitachinaka)

• Stags - Kashima Rugby Football Club RFC (Kashima)

• Tsukuba University (Tsukuba)

• Ibaraki Astro Planets (Yūki) (Baseball Challenge League) • Ibaraki Golden Golds (Regional club) (Tsukuba)

• Hitachi Pro Wrestling (Regional group) (Hitachi)

• Ibaraki Robots (Mito)

• Tsukuba Circuit (Shimotsuma)

• Fukuroda Falls • Hitachi Seaside Park • Ibaraki Prefectural Museum of History • Kairaku-en (garden) • Kashima Shrine • Lake Kasumigaura • Mount Tsukuba • Ōarai Aquarium • Tsukuba Science City • Ushiku Daibutsu • Illustration — Hobikibune (Sailboat) on Lake Kasumigaura • Illustration — Fukuroda Falls in Daigo • Illustration — A view of Mount Tsukuba, from Tsukuba City • Illustration — A view of Suigō Itako Iris Garden • Illustration — A view of Rokkakudō and Pacific Ocean in Kitaibaraki • Illustration — Torii of Ōarai Coast • Illustration — Nemophila in spring in Hitachi Seaside Park • Illustration — Kairaku-en • Illustration — Kashima Shrine • Illustration — Ōarai Aquarium

• Illustration — Lines map Kantō Railway, Tsukuba Railway (suspended 1987), and others • Illustration — Lotus field and Jōban Line • Illustration — Mount Tsukuba Ropeway • Illustration — Kashima Port • Illustration — Ibaraki Airport

• East Japan Railway Company • Jōban Line • Kashima Line • Mito Line • Suigun Line • Utsunomiya Line (Tōhoku Main Line) • Hitachinaka Seaside Railway • Minato Line • Kantō Railway • Jōsō Line • Ryūgasaki Line • Kashima Rinkai Railway • Kashima Rinkō Line • Ōarai Kashima Line • Metropolitan Intercity Railway Company • Tsukuba Express • Mooka Railway • Mooka Line

• Tsukuba Kankō Railway • Mount Tsukuba Cable Car • Mount Tsukuba Ropeway

• Ibaraki Kotsu

• Jōban Expressway • Ken-Ō Expressway • Kita-Kantō Expressway • Higashi-Kantō Expressway

Ibaraki Prefecture with the following national routes: • National Route 4 (around Koga area) • National Route 6 (Nihonbashi of Tokyo-Toride-Tsuchiura-Mito-Hitachi-Iwaki-Sendai) • National Route 50 • National Route 51 (Mito-Kashima-Itako-Narita-Chiba) • National Route 118 • National Route 123 • National Route 124 • National Route 125 (Katori-Tsuchiura-Tsukuba-Koga-Gyōda-Kumagaya) • National Route 245 • National Route 293 • National Route 294 • National Route 349 • National Route 354 • National Route 355 • National Route 400 (Mito-Nakagawa-Nikko-Minamiaizu-Nishiaizu • National Route 408 • National Route 461

Ibaraki Prefecture with more than 300 prefectural routes.

• Port of Ibaraki • Port of Hitachi • Port of Hitachinaka • Port of Ōarai - Ferry route to Tomakomai, Muroran of Hokkaido • Port of Kashima

• Ibaraki Airport • Ōtone Airstrip Ōtone Hikōjō is an airfield located on the Tone River in Kawachi. • Ryūgasaki Airfield • Tsukuba Heliport However, Tokyo's Haneda Airport and Narita International Airport are also used by air travellers from the prefecture.

The prefecture is often alternatively pronounced "Ibaragi by those who speak the regional dialect known as Ibaraki-ben. However, the standard pronunciation is "Ibaraki. According to the author of "Not Ibaragi, Ibaraki, this is most likely due to a mishearing of the softening of the "k" sound in Ibaraki dialect.

Ibaraki is twinned with: • France Essonne, France