Yamanashi Prefecture

Yamanashi Prefecture
山梨県
Japanese transcription(s)
  Japanese山梨県
  RōmajiYamanashi-ken
Lake Kawaguchi, one of the Fuji Five Lakes in Yamanashi Prefecture, at the foot of Mount Fuji
Anthem: Yamanashi-ken no uta
Country Japan
RegionChūbu (Kōshin'etsu) (Tōkai)
IslandHonshu
CapitalKōfu
SubdivisionsDistricts: 5, Municipalities: 27
Government
  GovernorKotaro Nagasaki (from February 2019)
Area
  Total
4,465.27 km2 (1,724.05 sq mi)
  Rank32nd
Highest elevation3,778 m (12,395 ft)
Population
 (February 1, 2025)
  Total
787,592
  Rank41st
  Density176/km2 (460/sq mi)
  Dialects
Gun'nai・Koshu・Narada
GDP
  TotalJP¥ 3,566 billion
US$ 32.7 billion (2019)
ISO 3166 codeJP-19
Websitewww.pref.yamanashi.jp
Symbols of Japan
BirdUguisu (bush warbler)
FlowerFujizakura (Fuji cherry)
TreeKaede (Japanese maple)

Yamanashi Prefecture (山梨県, Yamanashi-ken) is a prefecture of Japan located in the Chūbu region of Honshu. Yamanashi Prefecture has a population of 787,592 (1 February 2025) and has a geographic area of 4,465 km2 (1,724 sq mi). Yamanashi Prefecture borders Saitama Prefecture to the northeast, Nagano Prefecture to the northwest, Shizuoka Prefecture to the southwest, Kanagawa Prefecture to the southeast, and Tokyo to the east.

Kōfu is the capital and largest city of Yamanashi Prefecture, with other major cities including Kai, Minamiarupusu, and Fuefuki. Yamanashi Prefecture is one of only eight landlocked prefectures, and the majority of the population lives in the central Kōfu Basin surrounded by the Akaishi Mountains, with 27% of its total land area being designated as Natural Parks. Yamanashi Prefecture is home to many of the highest mountains in Japan, and Mount Fuji, the tallest mountain in Japan and cultural icon of the country, is partially located in Yamanashi Prefecture on the border with Shizuoka Prefecture.