Kagawa Prefecture

Kagawa Prefecture is a Japanese prefecture on the northeastern corner of Shikoku. Its administrative capital and largest city is Takamatsu, which functions as the prefecture’s principal political, commercial, transportation, and cultural center. Kagawa faces the Seto Inland Sea and lies opposite Okayama Prefecture on Honshu. The Great Seto Bridge provides a major road and rail connection between the region and mainland Japan, while ferry services link Takamatsu and other ports with islands and coastal cities around the Inland Sea. With an area of approximately 1,877 square kilometres, Kagawa is Japan’s smallest prefecture by geographic area. Its landscape is relatively narrow from north to south: the Seto Inland Sea forms the northern edge, while the Sanuki Mountains run along much of the southern boundary with Tokushima Prefecture. Kagawa borders Ehime Prefecture to the southwest and Tokushima Prefecture to the south. The prefecture also includes important islands such as Shōdoshima, the second-largest island in the Seto Inland Sea, as well as smaller islands associated with contemporary art, pilgrimage, agriculture, and maritime tourism. The area was historically known as Sanuki Province. Kagawa’s historical identity is associated with the Sanuki plain, the Seto Inland Sea, Shikoku’s religious traditions, and the medieval Battle of Yashima, fought near present-day Takamatsu between forces connected with the Heike and Genji clans. In the modern administrative period, Kagawa was briefly incorporated into Ehime Prefecture from August 1876 until December 1888 before being re-established as a separate prefecture. Kagawa’s cultural profile is strongly connected with food. Sanuki udon, a regional style of wheat noodle known for its firm, springy texture, is the prefecture’s best-known culinary symbol. The prefecture has also developed recognizable food traditions around bone-in seasoned chicken, especially hone-tsuki-dori from Marugame, and around products made from locally cultivated olives. Kagawa was the first place in Japan to achieve successful olive cultivation, with production dating from 1908. Olive-related agricultural products include olive oil, olive beef, and olive-fed yellowtail. Other regional specialties include wasanbon sugar confectionery, sōmen noodles, and soy sauce. The prefecture’s economy combines manufacturing, agriculture, food production, transportation, tourism, and services. Major industrial and export categories include transportation equipment, electrical equipment, chemical products, general machinery, mineral fuels, manufactured goods, raw materials, and food products. The Inland Sea location supports port activity, ferry transportation, industrial exchange, and tourism. Takamatsu Airport provides air access, while JR Shikoku and Kotoden railway services connect the main urban areas with the wider Shikoku network. Tourism is supported by a mixture of historical, religious, natural, and contemporary-art destinations. Major attractions include Ritsurin Garden, Takamatsu Castle, Yashima, Marugame Castle, Kotohira and Konpira Shrine, the Shikoku Pilgrimage temples, the Great Seto Bridge, Shōdoshima’s olive landscapes and Kankakei Gorge, and the art destinations of Naoshima and Teshima. Kagawa’s islands and coastal setting also contribute to its identity as a gateway to the Seto Inland Sea. Kagawa had an estimated population of roughly 950,000 in 2020, representing a decline from the 2000 census. Its public identity is therefore shaped by both regional distinctiveness and demographic and economic challenges common to many areas of Japan. Rather than being a commercial brand in the conventional sense, Kagawa operates as a governmental and territorial identity whose recognition is built through food culture, island tourism, industrial activity, historical heritage, and public-sector regional promotion.

Kagawa occupies the northeastern part of Shikoku, with a coastline on the Seto Inland Sea and a southern boundary shaped by the Sanuki Mountains. The region was historically known as Sanuki Province. Its location gave it long-standing connections with the Inland Sea, mainland Japan, neighboring Shikoku provinces, maritime transport, agriculture, and religious travel. One of the best-known historical episodes associated with the area is the Battle of Yashima. Yashima, now part of Takamatsu, was a battlefield in the conflict between the Heike and Genji clans. The episode is central to the historical and literary memory of the region and remains an important cultural reference in tourism and local interpretation. Modern prefectural administration changed during the early Meiji period. Kagawa was incorporated into Ehime Prefecture for a short period beginning in August 1876. It was restored as a separate prefecture in December 1888. Takamatsu developed as the administrative capital and became the principal urban center for government, transport, commerce, education, and cultural institutions. Kagawa’s economic history reflects both the limitations and advantages of its small land area. The prefecture has a narrow physical profile, but its position on the Seto Inland Sea provides access to maritime routes and mainland Japan. Manufacturing has become an important part of the economy, with significant activity in transportation equipment, electrical equipment, chemicals, machinery, fuels, manufactured goods, and food products. Agriculture remains prominent in selected sectors, particularly olive cultivation and related food production. Food has played an especially important role in Kagawa’s modern regional identity. Sanuki udon developed into the prefecture’s signature dish and became a major part of its tourism image. The large number of udon restaurants and the dish’s circulation throughout Japan helped associate Kagawa with noodle culture nationally. Marugame’s hone-tsuki-dori created another recognizable food tradition. Olive cultivation began successfully in Kagawa in 1908, and the sector later expanded beyond oil into livestock and fish products raised using olive-processing by-products as feed. Transport infrastructure has connected Kagawa’s cities, islands, and neighboring regions. JR Shikoku lines, Kotoden railways, expressways, ports, ferry routes, and Takamatsu Airport support movement within the prefecture and links to Honshu, other Shikoku prefectures, and major Japanese cities. The Great Seto Bridge is particularly significant because it provides a combined road and rail crossing between Shikoku and Honshu through the Seto Inland Sea. Kagawa’s tourism economy draws on several overlapping layers of heritage. Religious destinations include Konpira Shrine and temples on the Shikoku Pilgrimage route, including sites in Zentsūji, Kotohira, and surrounding areas. Historic and garden attractions include Ritsurin Garden, Takamatsu Castle, and Marugame Castle. The islands of the Seto Inland Sea add beaches, olive groves, gorges, traditional rural landscapes, and ferry-based travel. Naoshima and Teshima have become internationally recognized for contemporary art institutions and architecture, broadening Kagawa’s cultural profile beyond traditional heritage. The prefecture has experienced population decline. Its estimated population in 2020 was about 950,000, approximately 7 percent below the 2000 census level. This demographic trend forms part of the broader context for regional policy, economic development, tourism promotion, and the maintenance of services across urban, rural, and island communities. Today, Kagawa remains an active prefectural government jurisdiction whose public identity combines administrative functions with distinctive regional assets in food, agriculture, manufacturing, pilgrimage, island culture, and art.

• 2020

  Population estimate

  [1]Kagawa Prefectureen.wikipedia.org

  Kagawa’s population was estimated at approximately 950,000 in 2020, below its population level at the start of the century.

• 2008

  Expansion of the udon restaurant culture

  [1]Kagawa Prefectureen.wikipedia.org

  Reference material recorded more than 700 udon restaurants in Kagawa, illustrating the importance of Sanuki udon to the prefecture’s food identity.

• 1908

  Beginning of successful olive cultivation

  [1]Kagawa Prefectureen.wikipedia.org

  Kagawa began successful olive cultivation, establishing an agricultural tradition that later expanded into oil, livestock, and seafood products.

• 1888

  Re-establishment as a separate prefecture

  [1]Kagawa Prefectureen.wikipedia.org

  Kagawa was restored as a separate prefecture in December 1888.

• 1876

  Temporary incorporation into Ehime

  [1]Kagawa Prefectureen.wikipedia.org

  Kagawa was incorporated into Ehime Prefecture in August 1876 during the reorganization of Japan’s modern prefectural administration.

• Sanuki Province

  [1]Kagawa Prefectureen.wikipedia.org

  The territory corresponding to modern Kagawa was historically known as Sanuki Province.

• Battle of Yashima

  [1]Kagawa Prefectureen.wikipedia.org

  Yashima in present-day Takamatsu was the site of a major medieval conflict between forces associated with the Heike and Genji clans.

A compact Shikoku prefecture positioned around Seto Inland Sea access, Sanuki udon, olive agriculture, pilgrimage heritage, island landscapes, contemporary art, and manufacturing.

• Regional food

  Sanuki udon

  Sanuki udon is Kagawa’s most prominent culinary specialty. The regional style is associated with firm, elastic wheat noodles and is served in numerous formats, from simple broth-based bowls to chilled noodles with dipping sauce. Its broad restaurant presence and strong association with the prefecture make it both a local staple and a major tourism symbol.

• Regional food

  Hone-tsuki-dori

  Hone-tsuki-dori is a seasoned chicken thigh cooked on the bone. Originating in Marugame, it became a recognizable Kagawa food and spread to izakaya and restaurant menus elsewhere in Japan. The dish is valued for its robust seasoning and substantial presentation.

• Agricultural and food products · 1908

  Kagawa olive products

  Kagawa’s olive sector includes olive oil and other olive-related products. The prefecture’s successful cultivation began in 1908, and olives have since become an important part of its regional food branding. Olive-processing by-products are also used in feed systems connected with olive beef and olive-fed yellowtail.

• Agricultural product

  Olive beef

  Olive beef is a Kagawa agricultural product associated with cattle fed using material derived from olive pressing. The concept links the prefecture’s traditional olive cultivation with livestock production and gives the product a distinct regional provenance.

• Aquaculture product

  Olive-fed yellowtail

  Olive-fed yellowtail is a Kagawa seafood product developed around the use of olive-related feed inputs. It extends the prefecture’s olive identity into aquaculture and is presented as a regional specialty connected to the Seto Inland Sea.

• Confectionery

  Wasanbon sweets

  Wasanbon sugar is used in traditional sweets associated with Kagawa and the wider Sanuki area. These confections represent the prefecture’s relationship with refined sugar production and traditional Japanese culinary craftsmanship.

1. 1Kagawa Prefectureen.wikipedia.org
2. 2Official Kagawa Prefecture websitepref.kagawa.lg.jp