Chitose 千歳市

• Ainu origin: the area was called Shikot (シコッ, si-kot), "big hollow." The river was Shikoppet (シコッペッ, si-kot-pet), "big-hollow river"⁸¹⁸. The Japanese transcription Shikotsu (支笏/志古津) survives in Lake Shikotsu.
• What the "hollow" was: the city describes Shikot as a large depression or valley⁸. The Ainu place-name list quoted by Japanese Wikipedia is more specific: the hollow is the valley the Chitose River cut, not the lake basin or the lowland marshes¹⁸. The lake's own Ainu name came from the river: the Ainu called it Shikot-to or Shikot-toho, "the lake of the Shikot river"¹⁹.
• The 1805 renaming: Yamada Rihei Yoshimitsu (山田鯉兵衛嘉充) was the Hakodate magistracy official in charge of the Yūfutsu trading post. He felt "Shikotsu" sounded like shikotsu (死骨, "dead bones"), so he asked the magistrate Habuto Masayasu (羽太正養) for a new name. Many red-crowned cranes lived in the area, and Habuto drew on the saying "the crane lives a thousand years, the tortoise ten thousand" (鶴は千年、亀は万年). He renamed the river Chitose (千歳, "a thousand years")²⁰⁷. The story is written on the back of the shrine cabinet for the Benzaiten statue at Kamaka Shrine (釜加神社), now inside the grounds of Chitose Shrine, and in Habuto's diary Kyūmeikōki (休明光記)²⁰.

• Prehistory: people first lived here about 30,000 years ago (Shukubai lower-layer site, 祝梅下層遺跡)². More than 40 rivers run through the city, and about 300 archaeological sites from the Paleolithic to the early modern period lie along them²⁰. Two are National Historic Sites: the Usakumai site group (ウサクマイ遺跡群, Initial Jōmon to early modern) and the Kiusu earthwork burials²⁰. About 3,200 years ago, Jōmon people built the Kiusu burials². Three finds are national Important Cultural Properties: the animal-shaped clay figure from Bibi 4 (美々4遺跡, Final Jōmon), the clay mask from Mamachi (ママチ遺跡, Final Jōmon), and a set of early-modern Ainu wooden artifacts from Bibi 8²⁰.
• Ainu era and Matsumae contact: Ainu culture here dates back about 700 years, and chashi (fortified sites) were built about 300 years ago². Chitose sat on the "Shikotsu crossing" (シコツ越え). Travelers paddled up from the Pacific via Lake Utonai and the Bibi River, crossed the low watershed on foot, and continued down the Chitose and Ishikari rivers to the Sea of Japan²⁰⁴⁷. The crossing appears on the 1644 Shōhō provincial map, and a Benzaiten shrine was built in 1658². The place name first appears in an entry for 1660 in the Matsumae domain chronicle Fukuyama Hifu (福山秘府)²⁰. The city's own chronology dates this first mention to 1658 instead². Later records mention it in accounts of Shakushain's War and as a place where hawks were caught for shoguns and daimyo²⁰. Ainu and Japanese traded salmon and other goods at 16 posts (シコツ十六場所). In the late Edo period these were merged into the Yūfutsu trading post (ユウフツ場所), with an office on the Chitose River²⁰.
• Edo period: the monk Enkū (円空) dedicated a statue he carved here in 1666. Many people starved in 1724. Mt. Tarumae erupted heavily in 1667 and 1739². In 1857 a road from Ishikari to Chitose was cut, and the explorer Matsuura Takeshirō (松浦武四郎) surveyed the Lake Shikotsu area².
• Meiji settlement: in 1869 the area became Chitose District of Iburi Province under the Kōchi (Tosa) domain, and Kōchi settlers took up land on both banks of the Mamachi River in 1870². The Sapporo Main Road (札幌本道, today's National Route 36) opened in 1873. Chitose became a post town with a Kaitakushi relay station (駅逓所)²²⁰. A government venison-canning factory ran at Bibi from 1878². Emperor Meiji stayed overnight at the Shinpo Inn in 1881². A group of 31 farming households from Yamaguchi Prefecture arrived in 1884²²⁰. Around 1887 the Chitose and Osatsu plains were designated for settlement, and in 1894 some 188 individual settlers and two organized groups moved in²⁰.
• Salmon and paper: in 1888, Hokkaido official Itō Kazutaka (伊藤一隆) had just returned from studying salmon hatcheries in North America. He found springs here and founded a salmon hatchery. In 1896 a fish wheel modeled on those Itō had seen on the Columbia River was installed²⁰¹¹. Oji Paper's light railway (王子軽便鉄道, the "Yamasen") opened in 1908 to link Lake Shikotsu, Chitose and Tomakomai. Its No. 1 hydroelectric plant began sending power in 1910²⁶. The Muroran–Iwamizawa railway opened in 1892, and traffic on the old Sapporo road dropped off²⁰.
• The airfield and the Navy: a railway (today's JR Chitose Line) arrived in 1926. That October the Otaru Shimbun newspaper planned a hatchery tour for its readers. Villagers put in 150 person-days of work over two days to level a landing strip, and on 22 October the newspaper's biplane Hokkai No. 1 (北海1号) landed on it²⁰¹⁰. A proper airfield was completed in 1934. In 1939 the Imperial Navy opened an air group with a 1,200 m runway and 48 aircraft. The population passed 10,000, and Chitose became a town in 1942²⁰¹. The Chitose Mine (千歳鉱山) operated from 1936 until 1986⁷. In 1924 residents had even petitioned to rename Lake Shikotsu "Lake Chitose"².
• Post-war: US forces took over the airfield after 1945. Civil flights to Haneda resumed in 1951²⁰². The same year, the US 45th Infantry Division (Oklahoma National Guard) was stationed here before going to Korea, bringing an "Oklahoma boom"¹. The GSDF arrived in 1954 and the ASDF in 1957. Chitose became a city in 1958²⁰. When the US forces withdrew, the city built Hokkaido's first municipal industrial estates from 1964²¹.
• Airport city: the first Ice Festival opened on 30 January 1979, and the salmon festival (now the Indian Water Wheel Festival) began the same year²⁷. New Chitose Airport opened as a separate civil airport in 1988²⁰. The Chitose Institute of Science and Technology (公立千歳科学技術大学) opened in 1998 and became a public university in 2019². Salmon Park and the Chitose Outlet Mall Rera (千歳アウトレットモール・レラ) opened in 2005⁷.
• Recent events: the Hokkaido Eastern Iburi Earthquake struck on 6 September 2018 (shindo 6-upper in neighboring Abira)². In 2021 the Kiusu burials joined the World Heritage list². On 28 February 2023, Rapidus chose Chitose for its plant, and construction of the IIM-1 fab began in September 2023¹⁷²². A Kiusu guidance center opened on 25 April 2025⁶. In December 2025 the national research institute AIST (産業技術総合研究所) announced an open semiconductor R&D base in Chitose²³. The 2026 Chitose JAL International Marathon was cancelled because of brown-bear activity in the city²⁴. 2026 marks 100 years since Hokkai No. 1 landed⁸.

Chitose lies at the southern end of the Ishikari Plain, about 40 km south of Sapporo⁴. The city falls into three zones⁴⁷:

• The mountainous west: Lake Shikotsu and its volcanoes, inside Shikotsu-Toya National Park (支笏洞爺国立公園, designated in 1949)¹¹. Forest covers 52.5% of the city and lakes and ponds 16.6%. Over 75% of the land is national or public property⁴.
• The flat center: the urban area, the airport, industrial estates and SDF bases. The center sits only about 15 m above sea level (city hall 13.7 m, the airport 24.8 m)⁴. Near the airfield lies the lowest watershed in Japan, at about 25 m. It divides rivers flowing north to the Sea of Japan from those flowing south to the Pacific⁴⁷.
• The rolling east: the Umaoi Hills (馬追丘陵) and farmland⁷.

Lake Shikotsu formed after a huge eruption of the Shikotsu volcano about 40,000 years ago (the city chronology gives 46,000)⁴². It is about 42 km around, covers about 77 km², and is about 360 m deep. That makes it 8th in Japan by area, 2nd by depth, and 2nd by water volume¹¹⁴. It is billed as Japan's northernmost ice-free lake, but it has occasionally frozen over completely, most recently in 2001¹⁹. Rising lava cones later pinched it into a cocoon shape. Mt. Fuppushi (風不死岳, 1,103 m) stands on the south shore and Mt. Eniwa (恵庭岳, 1,320 m) on the north. Mt. Eniwa hosted the downhill races of the 1972 Sapporo Olympics¹¹⁴. Mt. Tarumae (樽前山, 1,041 m) is known for the lava dome that rose in its crater in 1909. The dome is about 130 m high and 450 m across¹¹. Lake Okotanpe (オコタンペ湖), one of Hokkaido's "three secret lakes," sits 599 m above sea level and is a no-entry special protection zone¹¹. The Chitose River flows east out of the lake through town. The Naibetsu River spring (ナイベツ川湧水), fed by the lake's groundwater, was named one of Japan's "100 Exquisite Waters" in 1985²²⁵.

Climate: Chitose sits where Pacific and Sea of Japan weather meet. It is dry by Hokkaido standards, and the city compares its inland climate to Karuizawa's⁴. The JMA climate normals at Chitose are an annual mean of 7.4 °C, 984.7 mm of precipitation, 227 cm of total snowfall and a 52 cm maximum snow depth²⁶. At the current JMA station (records from 2003), extremes run from 34.2 °C (11 August 2011) to −25.4 °C (31 January 2022, equalling 9 February 2019). The deepest snow on record there is 123 cm (February 2022)²⁷. The city yearbook also lists an older low of −30.7 °C (19 January 1966) from observations at the Chitose airfield⁴. The city says its snow depth is about half of Sapporo's (a 51 cm peak in 2017)⁵. The city lies in a designated heavy-snow area⁷.

• Manufacturing: more than 280 companies operate in the city's industrial estates. In the 2023 survey, manufacturing shipments reached about ¥279.5 billion, 4th among Hokkaido's 35 cities after Tomakomai, Sapporo and Muroran²¹. Major plants include Kirin Brewery's Hokkaido Chitose Brewery and factories of Seiko Epson, Denso Hokkaido and SUMCO²¹²⁸.
• Semiconductors: Rapidus is building its IIM-1 plant in the Chitose Bibi World estate (千歳美々ワールド) to mass-produce chips at 2 nm and below²¹¹⁷. The company aims to start mass production in 2027²⁹. The national research institute AIST plans an open semiconductor R&D center in the city²³. The prefecture publishes PFAS monitoring results for the Chitose River¹⁷.
• Aviation and logistics: New Chitose Airport has two 3,000 m runways²⁰. The airport, expressways and nearby Tomakomai port have drawn logistics hubs and industrial estates⁷³⁰.
• Defense: the GSDF 7th Division (第7師団), Japan's only armored division, is headquartered at Camp Higashi-Chitose (東千歳駐屯地). Camp Kita-Chitose (北千歳駐屯地) hosts the 1st Artillery Brigade (第1特科団). The ASDF 2nd Air Wing (第2航空団), a fighter wing, is based at Chitose Air Base (千歳基地), which is also home to the Special Airlift Group (特別航空輸送隊) that operates the government's official aircraft¹⁵.
• Agriculture: 214 farm households (2020). Crops are grown on 5,830 ha, mainly wheat (1,570 ha), soybeans (772 ha) and sugar beet (596 ha) in 2024³¹. Chitose leads Hokkaido in egg production. Two large poultry companies operate mainly in the Komasato (駒里) district¹⁶⁵. Chitose also has the highest agricultural output in the Ishikari region⁵.
• Fisheries: the Chitose salmon station, run by the national fisheries research agency, anchors salmon stocking for the Sea of Japan side of Hokkaido. In FY2024 about 160,000 salmon were caught and about 30.3 million fry released³¹. On Lake Shikotsu, the city-run kokanee hatchery and the Shikotsu Lake fishery cooperative protect the fish stock. The brand "Shikotsuko Chip" (支笏湖チップ) became a registered regional collective trademark in June 2024³¹.
• Tourism: 1.85 million visits in FY2024, 594,700 of them from outside Hokkaido. The Lake Shikotsu area alone drew 929,300. Foreign guests accounted for 201,000 overnight stays, back to pre-pandemic levels¹¹.
• Demographics: Chitose is still growing, in contrast to most of Hokkaido. In 2020, 440 more teenagers aged 15–19 moved in than moved out, partly thanks to SDF recruitment⁷. The 7th Comprehensive Plan (FY2021–2030) sets the goal "Connecting people, connecting the world: Chitose, city of the sky" (人をつなぐ 世界をつなぐ 空のまち ちとせ)⁸.

Shrines and traditions: Chitose Shrine (千歳神社) grew out of an Inari shrine that was ranked a gōsha (district shrine) in 1875². Kamaka Shrine (釜加神社) in its grounds traces back to the 1658 Shikotsu Benten shrine⁷. City-designated intangible cultural properties include the Izumisato lion dance (泉郷獅子舞) and Ainu traditional performing arts and craft skills⁷.

Museums: the Buried Cultural Property Center (千歳市埋蔵文化財センター) displays local archaeology⁶. The Kiusu guidance center (2025) shows real excavated finds such as ritual stone rods⁶. The Salmon Aquarium welcomed 313,547 visitors in FY2024¹¹. The Chitose Salmon Forest information hall (千歳さけますの森 さけます情報館, 1994) reproduces a Meiji-era hatchery¹¹.

• A salmon river homeland: many Ainu lived along the Chitose River. Artifacts from Ainu culture about 700 years ago, and chashi sites such as Atteushi (アッテウシ) and Furedoihi (フレドイヒ), have been identified in the city⁶². Early-modern Ainu wooden tools from the Bibi 8 site are a national Important Cultural Property²⁰.
• Words in the landscape: besides Shikot/Chitose, the Ainu name for the kokanee, kapachep ("thin fish"), gave the local word chip⁴. Mountain names come from Ainu too. Fuppushi is from hup-us-i, "where the Sakhalin firs grow." Eniwa is from e-en-iwa, "the sharp-headed mountain." Tarumae's original name was O-fuinupuri, "burning mountain"¹¹. "Haskap" comes from hashikap¹⁶.
• Living traditions: the Chitose Ainu Association (千歳アイヌ協会) and the Chitose Ainu Cultural Heritage Preservation Society (千歳アイヌ文化伝承保存会) are based at the Rankoshi Community Hall (蘭越生活館)⁶⁴⁹. Each autumn they hold Ashiri Chep Nomi (アシリチェプノミ) to welcome the new salmon. Participants catch only what they need from a dugout canoe (chip) with a hooked spear (marek), and offer the fish to Ape-huchi Kamuy, the fire deity⁶.
• Events open to visitors: the Chitose Ainu Culture Exhibition (July 2026, Civic Culture Center) showed tools and excavated items along with photographs of "Chitose's last bear ceremony"⁴⁹. The Ainu Festa at the aquarium offers marek fishing, deer-antler and woodcarving workshops and dance (3–4 October 2026)⁴⁷⁵⁰. Ainu dance is also performed at the Indian Water Wheel Festival¹³.

• Anchorage, Alaska, USA: sister city. The city council approved the link in June 1968 (the 70th Japan–US sister-city pair), and it was signed on 21 April 1969³⁹.
• Ibusuki, Kagoshima Prefecture: sister city since 15 April 1994, Chitose's first domestic sister city³⁹.
• Kongsberg, Norway: friendship city since 31 August 1988, a link that grew out of the Holmenkollen March³⁹.
• Changchun, China: friendship city since 11 October 2004³⁹.
• Also: the Chitose Tourism Federation has had a sister tie with the Jeju tourism association (Korea) since 1981³⁹.

• Aina Suzuki (鈴木愛奈): voice actress and singer from Chitose and the city's tourism PR ambassador³⁵⁷.
• Akiko Oshidari (忍足亜希子): actress from Chitose⁷.
• Hiromi Tsuru (鶴ひろみ): voice actress from Chitose⁷.
• Yūya Satō (佐藤友哉): novelist from Chitose⁷.
• Chiyotaikai Ryūji (千代大海龍二): former ōzeki sumo wrestler, born in Chitose and raised in Ōita⁷.