Ōtsuki, Yamanashi

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Panoramic view of Ōtsuki City, from Mount Iwadono
Panoramic view of Ōtsuki City, from Mount Iwadono
Flag of Ōtsuki
Official seal of Ōtsuki
Location of Ōtsuki in Yamanashi Prefecture
Location of Ōtsuki in Yamanashi Prefecture
Ōtsuki is located in Japan
Coordinates: 35°36′38″N 138°56′24″E / 35.61056°N 138.94000°E / 35.61056; 138.94000Coordinates: 35°36′38″N 138°56′24″E / 35.61056°N 138.94000°E / 35.61056; 138.94000
PrefectureYamanashi Prefecture
 • MayorYukio Ishii (from August 2007)
 • Total280.25 km2 (108.21 sq mi)
(November 1, 2015)
 • Total25,352
 • Density90.5/km2 (234/sq mi)
Time zoneUTC+9 (Japan Standard Time)
- TreeYaezakura (Prunus lannesiana)
- FlowerLilium auratum
Phone number0554-22-2111
Address2-6-20 Ōtsuki, Ōtsuki-shi, Yamanashi-ken 401-8601
Ōtsuki City Hall

Ōtsuki (大月市, Ōtsuki-shi) is a city located in Yamanashi Prefecture, Japan.

As of November 2015, the city had an estimated population of 25,252, and a population density of 90.5 persons per km2. The total area is 380.25 square kilometres (146.82 sq mi).


Ōtsuki is located in eastern Yamanashi Prefecture, approximately 80 kilometers from Tokyo.

Surrounding municipalities[edit]

Yamanashi Prefecture


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 in 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.


  • Ohtsuki City College
  • Ōtsuki has eight elementary schools, four middle schools and two high schools.




Sister city relations[edit]

Local attractions[edit]

  • Saruhashi - A famous historical bridge ja:猿橋
  • Yatsuzawa Power Station

Notable people[edit]


  1. ^ "International Exchange". List of Affiliation Partners within Prefectures. Council of Local Authorities for International Relations (CLAIR). Retrieved 21 November 2015.

External links[edit]