Sorachi 空知総合振興局

Population figures are 2020 Census counts, as listed in each municipality's file.⁸ Details and sources are in the linked files.

Totals: 216,350 in the 10 cities and 65,614 in the 14 towns, 281,964 in all.⁸ By sub-area, the 2020 Census counted 152,486 people in South Sorachi, 99,784 in Central Sorachi and 29,694 in North Sorachi.⁶

Population trends: Every municipality except Nanporo lost people between the 2020 Census and the preliminary 2025 count.⁸ Nanporo grew by 571 people (7.8%), the second-highest growth rate in Hokkaido. Yubari fell by 23.4%, the steepest decline of any Hokkaido municipality.⁸

• Setting. Sorachi is an inland region a little west of the centre of Hokkaido. The Ishikari River runs north–south down its middle, and the fertile Ishikari Plain opens out to the south-west.⁶ The Ishikari rises in the Daisetsuzan range and flows through the Kamikawa, Sorachi and Ishikari plains to the Sea of Japan. Hokkaido Heritage calls it Hokkaido's "mother river" (母なる川).²
• Three landscapes.
  • East: the Yubari Mountains. Mt. Yubari (夕張岳, 1,668 m) in Yubari and Kirigishi-yama (崕山, 1,066 m) in Ashibetsu have unusual geology and endemic alpine plants such as Yūbarisō and Kirigishisō.¹⁶ The old coal towns lie in the valleys of these hills.
  • Centre: the plains of the Ishikari and its tributaries, almost all rice paddy. The Sorachi River's Ainu name is the source of the name "Sorachi" (see Ainu heritage below).¹⁷
  • West: the Mashike Mountains (増毛山地), also called the Kabato Mountains (樺戸山地).²¹⁸ Shokanbetsu-dake (暑寒別岳, 1,491 m) is the main peak of the quasi-national park that covers their Sorachi slopes.¹⁶
• The smallest municipalities. The four smallest municipalities in Hokkaido by area are all in Sorachi (GSI figures, 1 April 2026):⁵
  • Kamisunagawa: 39.98 km²
  • Chippubetsu: 47.18 km²
  • Moseushi: 48.64 km²
  • Utashinai: 55.95 km²
• Protected areas.
  • Shokanbetsu-Teshio-Yagishiri Quasi-National Park (designated 1 August 1990): 7,080 ha in Uryu, 1,846 ha in Hokuryu and 7,020 ha in Shintotsukawa.¹⁶
  • Furano-Ashibetsu Prefectural Natural Park (designated 19 April 1955): 7,824 ha in Ashibetsu, 4,219 ha in Mikasa and 8,006 ha in Yubari. It includes Lake Katsurazawa and Shuparo Lake.¹⁶
  • Ramsar wetlands: Miyajima-numa in Bibai (registered 18 November 2002, 41 ha) and Uryunuma Wetland in Uryu (8 November 2005, 624 ha).¹⁹
    • Uryunuma lies at about 850 m in the Mashike Mountains. It is the largest raised bog among Hokkaido's mountain wetlands and has more than 700 pools.²
    • Miyajima-numa lies in the Ishikari lowland, where many old river-channel lakes and marshes survive. Much of the greater white-fronted goose population that winters in Japan stops there on migration.¹⁶ Bibai calls it Japan's largest and northernmost staging site for the species.²⁰
• Water for rice. The Hokkai trunk canal (北海幹線用水路) was begun in 1924 and completed in four years.² It runs about 80 km through seven cities and towns, from Akabira to Nanporo, and draws up to 44 m³ a second from the Sorachi River. Hokkaido Heritage calls it the longest farm-only canal in Japan.²
• Climate.
  • The region is long and inland, so the weather differs between north and south and between the plains and the mountains. Rain is heaviest from summer to autumn, and the winter monsoon brings heavy snow.⁶
  • JMA normals for 1991–2020:
    • Iwamizawa (south): mean 7.9 °C; January −5.3 °C, August 21.3 °C; 1,248.5 mm of precipitation; 664 cm of snowfall.²¹
    • Yubari (hills): mean 6.4 °C; 1,400.1 mm of precipitation; 872 cm of snowfall; an average deepest snow cover of 139 cm.²²
    • Fukagawa (north): mean 6.8 °C; January −7.3 °C, August 20.6 °C; 929 cm of snowfall; an average deepest snow cover of 111 cm.²³
    • Naganuma (south-west): mean 7.5 °C; 1,003.9 mm of precipitation.²⁴
  • Urausu says it gets 8–9 m of snow in a normal year.¹⁴

• Prehistory. People lived here long before written records. The Otoe Stone Circle (音江環状列石) in Fukagawa is a group of Jōmon-period graves and has been a national historic site since 1956.²⁵
• Ainu era and the Edo period.
  • Under the Tokugawa shogunate the area was ruled at times by the Matsumae domain and at times directly by the shogunate. No Japanese settled here. Indigenous people lived along the Ishikari and its tributaries, where they fished for salmon.⁴
  • Dried salmon and other trade goods were carried down the Ishikari from the upper basin.²⁶
  • The explorer Matsuura Takeshirō travelled up the Ishikari in 1857 and recorded the landscape and its Ainu place names.²⁵
• 1869–1882: province, coal and prisons.
  • 1869: the area was placed in Ishikari Province.⁴
  • 1879: the Horonai coal mine opened in today's Mikasa.⁴
  • 1881: Tsukigata Village and the Kabato prison (樺戸監獄) were established in Kabato District. Convicts from the prison did flood-control and clearing work along the Ishikari.⁴
  • 1882: Ichikishiri Village was established and the Sorachi Shūjikan (空知集治監) prison built there. The railway from Temiya (Otaru) to Horonai opened the same year.⁴
  • The Horonai line was Hokkaido's first railway and Japan's third, after Shimbashi–Yokohama and Osaka–Kobe. It was also Japan's first industrial railway.²⁷
  • From 1883 to 1894, about 800–1,200 convicts from the Sorachi prison dug coal at Horonai every day.²⁷ The prison held up to about 3,000 inmates. More than 1,000 of them died while it operated (1882–1901).²⁸
• 1889–1900: settlers arrive.
  • Tondenhei farmer-soldiers were settled from December 1889 at Takikawa, from June 1891 at Bibai, Takashinai and Chashinai, and from August 1894 at Ebeotsu. In May 1895 settlers followed at Chippubetsu, Ichiyan and Osamunai in Uryu District.²⁹
  • In 1889 a flood hit Totsukawa in Nara Prefecture. In its wake, 600 households (2,489 people) moved to Hokkaido, and in June 1890 they settled the Tokku plain, founding Shintotsukawa.¹⁵
• The subprefecture takes shape.
  • 1884: a district office for Sorachi and Yubari districts opened.⁴
  • 30 November 1897: Sorachi Subprefecture (空知支庁) was created, one of 19 in Hokkaido, with an office in Iwamizawa. It covered the Sorachi, Yubari, Uryu and Kabato districts.⁴
  • 1900: Furano was removed from the subprefecture, according to the bureau's chronology.⁴ Japanese Wikipedia dates the transfer of the Furano villages to 1899.¹⁰
  • 1947: the office was renamed Hokkaido Sorachi Subprefecture (北海道空知支庁).⁴
• Japan's largest coalfield.
  • At the peak, more than 100 mines were working in Sorachi.³⁰ In the 1960s the region had about 110 mines producing about 17.5 million tonnes a year. That made it Japan's largest coal-producing area and a mainstay of Hokkaido's development and Japan's modernisation.²
  • The population peaked at 812,370 at the 1960 Census.⁶
  • Rationalisation of the coal industry from 1955 forced mine after mine to close.³⁰
  • The closure of the Sorachi mine in Utashinai in March 1995 ended underground mining in the region. Open-pit mining continued after that.³⁰
• After coal.
  • Populations fell sharply in the former mining towns. Bibai, for example, peaked at 92,150 in April 1956, and all its mines had closed by 1973.²⁰
  • Yubari remains the only municipality in Japan under fiscal regeneration.¹²
• Recent changes.
  • 2006: Kitamura and Kurisawa merged into Iwamizawa.⁴
  • April 2010: a Hokkaido ordinance replaced the subprefectures with general and ordinary subprefectural bureaus, and Sorachi Subprefecture became the Sorachi General Subprefectural Bureau (空知総合振興局). Horokanai moved to Kamikawa at the same time, leaving today's 10 cities and 14 towns.⁴
  • May 2019: the coal story joined Japan Heritage (see Culture).³¹
  • The railway network has since shrunk (see Getting there & around).

• Hokkaido's biggest rice district.
  • Paddy rice: 39,400 ha planted in 2023, about 42% of Hokkaido's rice area and the largest of any subprefecture. By area, 42% of Sorachi's rice is Nanatsuboshi and 27% is Yumepirika.¹
  • Farmland: 113,500 ha in 2023, about 10% of Hokkaido's total. That includes 91,000 ha of paddy fields, 41.1% of Hokkaido's paddy.¹
  • Farms: 5,596 commercial farm households in 2020, 17.4% of Hokkaido's.¹
  • Output: farm output was estimated at about ¥104 billion in 2022, about 8% of Hokkaido's. The bureau gives ¥104.2 billion in its text and ¥104.3 billion in its table. For crop output alone, Sorachi ranks third in Hokkaido, after Tokachi and Okhotsk.¹
  • Rotation crops: paddies converted to other crops make Sorachi Hokkaido's second-largest soybean area (after Tokachi), its third-largest wheat area (after Tokachi and Okhotsk) and its second-largest buckwheat area (after Kamikawa).¹
  • Horticulture: Chinese cabbage, melons, cucumbers, leeks, asparagus, strawberries and apples are grown on a large scale.¹
• Private-brand rice. Many municipalities and farm co-ops sell their own branded rice. Examples in this library:
  • Hokuryu's low-pesticide Himawari Rice (Hokuryu)
  • Numata's snow-stored Secchūmai (Numata)
  • Moseushi's mint-bordered Kitasaika (Moseushi)
  • Bibai's snow-cooled Yukigura rice (Bibai)
  • Uryu rice (Uryu)
  • The bureau publishes a "Sorachi rice map" of these brands.¹
• Green tourism. Sorachi is close to Sapporo, and in 2021 it had 502 green-tourism facilities, such as farm stays, farm stands, farm restaurants and pick-your-own farms. That is the most of any subprefecture and about a fifth of Hokkaido's total.¹
• Jobs. In 2020, 13.4% of workers were in primary industries, 18.8% in secondary industries and 67.8% in services. The Hokkaido-wide figures were 6.8%, 17.0% and 76.2%.⁶
• Manufacturing.
  • Shipments were worth about ¥269.8 billion in 2021, 4.4% of Hokkaido's total, from 410 plants with 11,092 workers.³²
  • Iwamizawa led with ¥86.7 billion (32.1%). Next came Naie (¥29.9 billion), Sunagawa (¥24.9 billion) and Akabira (¥21.4 billion).³²
  • Nine municipalities, mostly former coal towns, shipped more than ¥10 billion each.³²
• Wine.
  • As of April 2024, Sorachi had 10 wineries and 11 vineyards, and "wine tourism" is growing.³³
  • Urausu says it has the largest wine-grape planting area in Japan.¹⁴ Other wineries are in Iwamizawa, Mikasa, Naganuma and Takikawa, and Utashinai has begun growing grapes.
  • The winemakers have run an outdoor food-and-wine event, the Sorachi Wine Picnic (そらちワインピクニック), since FY2012.³³
• Regional food brands.
  • Yubari melon: it was registered under Japan's geographical indication (GI) system in 2015.³⁴
  • Jingisukan (grilled mutton) is a Hokkaido Heritage item.² It is a speciality in Takikawa and Naganuma.
  • "Tantetsukō meshi" (炭鉄港めし, coal-town food): the bureau promotes the dishes miners ate as this regional brand. They include Bibai yakitori, Akabira's gangan-nabe hotpot and Ashibetsu's gatatan soup.³³
  • Sake: Kitanonishiki from Kuriyama and Kinteki from Shintotsukawa.
  • Sweets: Sunagawa's confectioners (Sunagawa).
• Tourism.
  • FY2025: Sorachi counted 13.72 million tourist visits, 2.4% more than the 13.40 million of FY2024.³⁵
  • Visitors: about 97% were day-trippers (13.30 million), and 0.93 million came from outside Hokkaido.³⁵
  • Overnight stays: there were 415,100 overnight guests and 5,390 foreign overnight guests.³⁵ Foreign overnight guests had numbered 46,570 in FY2018.³³

Heritage designations

• Japan Heritage "Tantetsukō" (炭鉄港).
  • This story links Sorachi's coal, Muroran's steel, Otaru's port and the railways that joined them. It was recognised as Japan Heritage on 20 May 2019.³¹³⁰
  • Ten Sorachi municipalities have component properties: Yubari, Iwamizawa, Bibai, Ashibetsu, Akabira, Mikasa, Utashinai, Kuriyama, Tsukigata and Numata.³⁶
  • The components include mine headframes, power stations, railway relics, the Kobayashi sake brewery buildings in Kuriyama and the head office of the Kabato prison.³⁶
• Hokkaido Heritage items in Sorachi:²
  • Hokkaido's Meiji prisons (Kabato and Sorachi)
  • Uryunuma Wetland
  • Sorachi's coal-mine facilities and way of life, including the Hokkai bon dance
  • Jingisukan
  • The Ishikari River
  • The Hokkai trunk canal

Settler and mining culture

• Hokkai Bon Uta. The song danced to at bon festivals across Hokkaido began as the miners' "Beccho-bushi" of Mikasa.²⁸
• Yotaka Andon. Numata's festival was brought from Oyabe in Toyama in 1977. It is Hokkaido's only "fighting lantern" (kenka andon) festival, and its largest floats are 7 m tall and weigh 5 t.³⁷
• Other traditions. Many towns keep lion dances and other folk arts brought by Meiji-era settlers. See the Culture sections of the municipality files.

Festival calendar (main events listed by the bureau)³³

The calendar comes from the bureau's 2024 overview. Some events have since changed names or dates, so check the municipality files for the current editions.

Ainu heritage / アイヌ文化

• Before settlement. The bureau's chronology describes the Ishikari and its tributaries before Japanese settlement as home to indigenous people who lived there to fish for salmon.⁴ Fukagawa's local history describes this Ainu life in more detail:
  • The Ainu lived along the river in kotan (villages) of five or six houses.²⁵
  • They fished for salmon and trout and hunted deer, bears and hares.²⁵
  • They wore attus, cloth woven from tree bark.²⁵
  • They handed down yukar (epics) and uepeker (folk tales) by word of mouth.²⁵
• The name "Sorachi." It comes from the Ainu name of the Sorachi River, sōrapuchi (ソーラプチ), "a river where waterfalls hang." Takikawa's name ("waterfall river") is a Japanese translation of the same word.¹⁷
• Other Ainu place names. Many municipal names are Ainu too:
  • Yubari, from yūparo, "where mineral springs well up"³⁸
  • Bibai, from pipa-o-i, "place with many swamp shellfish"²⁰
  • Naganuma ("long marsh"), a translation of Tanne-tō, "long, narrow lake"³⁹
  • Kabato (the district and prison), from kapato, "where pond lilies grow"; the Ainu ate the plant²⁶
• Japanese names. A few names are Japanese instead:
  • Iwamizawa comes from Yuamisawa, "bathing stream," where Meiji-era workers bathed at a rest lodge.⁴⁰
  • Tsukigata is named after the first warden of the Kabato prison, Tsukigata Kiyoshi.⁴¹
  • Shintotsukawa means "New Totsukawa."¹⁵
• Ainu guides. In 1880 an Ainu hunter named Rekonte met the survey party that was choosing the site for the Kabato prison. He offered to help and guided them over the land.²⁶
• Facilities. None of Sorachi's 24 municipality files records a dedicated Ainu cultural facility or living-tradition group. Visitors usually go to Upopoy, the National Ainu Museum and Park, in Shiraoi, or to Sapporo's Pirka Kotan (see Sapporo).

• Coal, rail and prison heritage. Look for:
  • the Mitsubishi Bibai headframes (1923), painted a bright red that is said to be their original colour, in Bibai³⁰
  • the 43.8 m Sumitomo Akabira headframe (1963), toured with former miners as guides, in Akabira³⁰
  • the Hokutan Ikushunbetsu Nishiki shaft tower (1919), which the bureau calls the oldest surviving shaft tower in Hokkaido, in Mikasa. Mikasa's own file dates it to 1920.³⁰
  • the Takinoue power station (1925), still generating, in Yubari³⁰
  • Mikasa's Horonai area and Railway Village, and the Kabato prison museum in Tsukigata
• A relay of flowers. Blooms run from spring into autumn.³³
  • Rapeseed: Takikawa's fields are among the largest in Japan and bloom in mid to late May.⁴²
  • Sunflowers: about 2 million bloom on 23.13 ha at Hokuryu's Himawari no Sato. Its festival draws more than 200,000 visitors a year.⁴³
  • Others: roses in Iwamizawa and Chippubetsu, cherries across the region, and kochia at Yuni Garden in Yuni.
• Wetlands, mountains and lakes.
  • The Uryunuma Wetland fills with alpine and wetland flowers in summer and draws many hikers.¹⁶
  • Geese gather at Miyajima-numa in the migration seasons, and visitors come from across Hokkaido and beyond to watch.¹⁶
  • Mt. Yubari is one of Japan's "100 flower mountains."¹⁶
  • Anglers fish through the ice for pond smelt on Lake Katsurazawa (Mikasa) and Lake Takisato (Ashibetsu).¹⁶
• Cycling. Long flat roads through the paddies have made Sorachi popular with cyclists. The Hokkaido Sorachi Gourmet Fondo combines riding with food.³³
• Onsen. Hot springs are scattered through the region. Several are part of or next to a roadside station:
  • Tirol no Yu at Utashinai⁴⁴
  • Tsukigata Onsen Yurikago at Tsukigata⁴⁵
  • Hokuryu Onsen at Hokuryu⁴⁶
  • Chippubetsu Onsen at Chippubetsu⁴⁷
  • Taiko no Yu at Mikasa

Suggested routes / おすすめルート

These routes are suggestions. Check opening seasons in each municipality file, because many heritage sites close from November to April.

1. Coal towns of the Yubari Mountains (2 days, by car)

• Day 1: south.
  • Start in Iwamizawa at the Ishigura stone warehouse, home of the Tankō no Kioku Management Center (炭鉱の記憶マネジメントセンター).³⁶
  • Drive to Mikasa for the Horonai mine and railway sites, the ammonites of the City Museum and a stop at Michi-no-Eki Mikasa.²⁷⁴⁸
  • Continue to Yubari for the Coal Museum, then Yubari melon at Michi-no-Eki Yubari Melord.⁴⁹
• Day 2: north along the old coal belt.
  • See the red headframes at Bibai's Coal Mine Memorial Forest Park in Bibai.³⁰
  • Take a guided tour of the Sumitomo headframe in Akabira.³⁰
  • Soak at Tirol no Yu in Utashinai.⁴⁴
  • Finish with gatatan soup at Star Plaza Ashibetsu in Ashibetsu.⁵⁰
• Food: try the coal-town dishes promoted as "Tantetsukō meshi" along the way.³³

2. The west bank: Route 275 from the prison town to the sake town (1 day from Sapporo)

• Begin at the Kabato prison museum in Tsukigata. Bathe or eat at Michi-no-Eki 275 Tsukigata, whose signature product is Manmaru Tomato juice.⁴⁵
• Head north on Route 275 to Urausu for the Tsurunuma vineyards. Michi-no-Eki Tsurunuma serves botan soba and carrot soft-serve.¹⁴⁵¹
• Continue to Shintotsukawa, the town of the Totsukawa settlers, for Kinteki sake.¹⁵
• Cross the Ishikari to Takikawa for jingisukan and Michi-no-Eki Takikawa. In May, visit the rapeseed fields.⁵²⁴²

3. North Sorachi's flower-and-rice relay (summer, 1–2 days)

• Start at Michi-no-Eki Rice Land Fukagawa in Fukagawa, a station themed on rice.⁵³
• Drive Route 233 to the bell tower and onsen at Michi-no-Eki Kane no Naru Machi Chippubetsu in Chippubetsu.⁴⁷
• Take Route 275 to Himawari no Sato and Michi-no-Eki Sunflower Hokuryu in Hokuryu.⁴³⁴⁶
• End at Michi-no-Eki Den'en no Sato Uryu in Uryu, the gateway to the Uryunuma Wetland.⁵⁴
• Timing: in mid-August you can add the Yotaka Andon festival in Numata. The 2026 festival ran on 21–22 August.³⁷

Sorachi has 13 of Hokkaido's 128 active Michi-no-Eki. The official register numbers run to 131, but three registrations elsewhere in Hokkaido have been cancelled, most recently Maruseppu in Engaru on 19 December 2025.⁵⁵ Mikasa's station was the first registered in Hokkaido.⁴⁸ The other 11 municipalities have none.⁵⁵ Sunagawa's Highway Oasis and similar in-town shops are described in the municipality files but are not Michi-no-Eki.

• By air.
  • New Chitose Airport serves the south of the region. Iwamizawa is about 65 minutes away by limited express and about 60 minutes by car.⁵⁸
  • Kuriyama is about 40 minutes by car from both the airport and Sapporo.⁵⁹
  • Asahikawa Airport is closer to the northern towns. See the Fukagawa and Chippubetsu files.
• By rail.
  • JR Hakodate Main Line: the region's spine, running Iwamizawa–Bibai–Naie–Sunagawa–Takikawa–Fukagawa.
    • Iwamizawa is about 25 minutes from Sapporo by train.⁵⁸
    • Every limited express stops at Takikawa, which is about 53 minutes from Sapporo and 33 minutes from Asahikawa.⁶⁰
  • Other lines:
    • The JR Muroran Main Line runs south from Iwamizawa to Kuriyama (about 23 minutes) and Yuni.⁵⁹
    • The Nemuro Main Line leaves Takikawa for Akabira, Ashibetsu and Furano. Its Furano–Shintoku section closed on 1 April 2024.⁶¹
    • In Yubari, some limited expresses on the Sekishō Line call at Shin-Yubari.⁶²⁴⁹
  • Lost lines:
    • The Sasshō Line north of Hokkaidō-Iryōdaigaku closed on 7 May 2020. This took the railway out of Tsukigata, Urausu and Shintotsukawa.⁶³
    • The Rumoi Main Line closed in two stages: Ishikari-Numata–Rumoi on 1 April 2023, and Fukagawa–Ishikari-Numata on 1 April 2026. This ended rail service to Chippubetsu and Numata.⁶⁴
    • Many other towns, including Mikasa, Utashinai, Kamisunagawa, Nanporo, Naganuma, Uryu and Hokuryu, now depend on buses and cars.
• By road.
  • Dō-ō Expressway: runs the length of the plain. Its first section, Sapporo IC to Iwamizawa IC, opened on 9 November 1983.⁶⁵ In Sorachi it has the following interchanges, service areas and parking area:⁶⁵
    • Iwamizawa IC and SA
    • Mikasa IC
    • Bibai IC
    • Chashinai PA
    • Naie-Sunagawa IC
    • Sunagawa SA and smart IC
    • Takikawa IC
    • Fukagawa IC and JCT
  • Other expressways: the Fukagawa–Rumoi Expressway (E62) serves the northern towns, with interchanges at Fukagawa-Nishi, Chippubetsu, Numata and Hokuryu Himawari.⁶⁶ The Dōtō Expressway's Yubari IC serves Yubari.⁶²
  • Main national routes:
    • Route 12 follows the Hakodate Main Line through Mikasa, Naie, Takikawa and Fukagawa.^48135253
    • Route 275 runs along the west bank of the Ishikari.^45515446
    • Route 274 links Naganuma and Yubari.⁵⁶⁴⁹
    • Route 233 heads from Fukagawa through Chippubetsu toward Rumoi.⁵³⁴⁷
• Buses. Hokkaido Chūō Bus expresses link Sapporo with the region's towns. For example, the Kōsoku Kuriyama takes about an hour.⁵⁹ Local routes change often, so check each municipality file.
• Getting around. Heritage sites, lakes, wetlands and flower fields are spread out, and many lie in the hills or far from a station, so a car is the practical way to see them. Snow is heavy in winter, with normal seasonal snowfall of 6.6–9.3 m at the JMA stations in Iwamizawa, Yubari and Fukagawa. Use winter tyres and allow extra time.²¹²²²³