Kai-Koizumi StationKai-Koizumi Station is a railway station in the Koumi Line in the city of Hokuto, Yamanashi Prefecture, Japan, operated by East Japan Railway Company.WWW jreast.co.jp/estation/sta...LinesKai-Koizumi Station is served by the Koumi Line and is 7.1 kilometers from the starting point of the line at Kobuchizawa Station.Station layoutThe station consists of two ground-level opposed side platforms, connected by a level crossing. The station is unattended.HistoryKai-Koizumi Station was opened on 27 July 1933 by the Japanese Government Railways. With the privatization of Japanese National Railways on 1 April 1987, the station came under the control of JR East.Passenger statisticsIn fiscal 2010, the station was used by an average of 22 passengers daily.Surrounding areaYatsugatake South Base ObservatoryKoizumi Post Office