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Ōtsuki 大月市
City
Panoramic view of Ōtsuki City, from Mount Iwadono
FlagSeal
Location of Ōtsuki in Yamanashi Prefecture
Ōtsuki
Coordinates: 35°36′38″N 138°56′24″E / 35.61056°N 138.94000°E / 35.61056; 138.94000
Country	Japan
Region	Chūbu (Tōkai)
Prefecture	Yamanashi
Government
• Mayor	Nobuyasu Kobayashi (from August 2019)
Area
• Total	280.25 km (108.21 sq mi)
Population
• Total	21,835
• Density	78/km (200/sq mi)
Time zone	UTC+9 (Japan Standard Time)
Phone number	0554-22-2111
Address	2-6-20 Ōtsuki, Ōtsuki-shi, Yamanashi-ken 401-8601
Climate	Cfa
Website	Official website
Symbols
Flower	Lilium auratum
Tree	Yaezakura (Prunus lannesiana)

Ōtsuki (大月市, Ōtsuki-shi) is a city located in Yamanashi Prefecture, Japan. As of 1 October 2023, the city had an estimated population of 21,835 in 10207 households, and a population density of 86 persons per km. The total area of the city is 380.25 square kilometres (146.82 sq mi).

Geography

Ōtsuki is located in eastern Yamanashi Prefecture, approximately 80 kilometers from Tokyo. the city is located in the Chichibu and the Tanzawa Mountains and the Sagami River (known locally as the Katsura River) flows through the city.

Surrounding municipalities

Yamanashi Prefecture

• Fuefuki
• Fujikawaguchiko
• Kōshū
• Kosuge
• Tsuru
• Uenohara

Climate

The city has a climate characterized by hot and humid summers, and relatively mild winters (Köppen climate classification Cfa). The average annual temperature in Ōtsuki is 11.2 °C. The average annual rainfall is 1523 mm with September as the wettest month. The temperatures are highest on average in August, at around 23.5 °C, and lowest in January, at around -0.5 °C.

Demographics

Per Japanese census data, the population of Ōtsuki has declined at an accelerating rate in recent decades.

History

Located in the headwaters of the Sagami River, the area around present-day Ōtsuki was heavily settled in the Jōmon period, and over 80 Jōmon sites have been found within city limits. However, there are fewer Yayoi period sites. During the Nara period ritsuryo organization of Kai Province, the area came under Tsuru County. From the middle of the Kamakura period, much of the province came under the control of the Takeda clan.

During the Edo period, all of Kai Province was tenryō territory under direct control of the Tokugawa shogunate, although the portion around modern day Ōtsuki was part of the short-lived Tamimura Domain, which was suppressed in 1704. Also during the Edo period, the Kōshū Kaidō, one of the Edo Five Routes, passed through Ōtsuki, which with 12 of the 45 post stations has more post stations than any other municipality in Japan. The eleven post stations spread from Shimotorisawa-shuku to Kuronoda-shuku.

During the cadastral reform of the early Meiji period on July 1, 1889, the village of Hirosato was created within Kitatsuru District, Yamanashi Prefecture. On April 1, 1933, the village was raised to town status, and renamed Ōtsuki. The town was bombed by the United States on August 13, 1945, only two days before the end of World War II. The town was elevated to city status on August 8, 1954, by merging with the neighboring towns of Saruhashi and Nanaho and the villages of Sasago, Nigioka, Hatsukari and Yanagawa.

Government

Ōtsuki has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 12 members.

Economy

Ōtsuki was noted traditionally for its production of fine silk. In the modern period, it became the location of numerous factories producing synthetic fibers.

Education

• Ohtsuki City College
• Ōtsuki has five public elementary schools and two public middle schools operated by the city government and two public high schools operated by the Yamanashi Prefectural Board of Education.

Transportation

Railway

• East Japan Railway Company - Chūō Main Line
  • Yanagawa – Torisawa – Saruhashi – Ōtsuki – Hatsukari – Sasago
• Fuji Kyuko - Fujikyuko Line
  • Ōtsuki - Kamiōtsuki

Highway

• Chūō Expressway
• National Route 20
• National Route 139

Sister cities

• Fraser Coast, Queensland, Australia

Local attractions

• Saruhashi - A famous historical bridge and designated National Place of Scenic Beauty
• Yatsuzawa Power Station

Notable people

• Masahide Kobayashi – former professional baseball player
• Masanori Murakami – former professional baseball player

References

1. "Ōtsuki City official statistics". www.city.otsuki.yamanashi.jp. Retrieved 2023-10-13.
2. "Otsuki climate: Temperature Otsuki & Weather By Month". en.climate-data.org. Retrieved 2023-10-13.
3. 観測史上1～10位の値（年間を通じての値）. JMA. Retrieved March 4, 2022.
4. 気象庁 / 平年値（年・月ごとの値）. JMA. Retrieved March 4, 2022.
5. Ōtsuki population statistics
6. "International Exchange". List of Affiliation Partners within Prefectures. Council of Local Authorities for International Relations (CLAIR). Retrieved 21 November 2015.

External links

• Official Website (in Japanese)

v t e Yamanashi Prefecture
Kōfu (capital)
Core city	Kōfu
Cities	Chūō Fuefuki Fujiyoshida Hokuto Kai Kōshū Minami-Alps Nirasaki Ōtsuki Tsuru Uenohara Yamanashi
Districts	Kitatsuru District Kosuge Tabayama Minamikoma District Hayakawa Fujikawa Minobu Nanbu Minamitsuru District Dōshi Fujikawaguchiko Narusawa Nishikatsura Oshino Yamanakako Nakakoma District Shōwa Nishiyatsushiro District Ichikawamisato
Former Districts	Higashiyamanashi District Higashiyatsushiro District Nishiyamanashi District Kitakoma District
List of mergers in Yamanashi Prefecture

• Ōtsuki, Yamanashi
• Cities in Yamanashi Prefecture