Koza

Known weekday departures: 31/day · Known Sat & holiday departures: 31/day

First / last known departure (weekday): 6:42 / 23:20

Busiest hour (known departures): 15:00–16:00 (4)

0:00 ─ 23:00

Figures are the departures known from the timetable data, not a count of today's actual service.

Timetable data as of 2 May 2026 (retrieved in spring/summer 2026).

• Kisei Line: Kii-Tahara ⇄ Kii-Hime

Koza Station opened on 11 December 1936 with the extension of the national railway's Kisei Central Line from Shimosato to Kushimoto. In 1940 it became part of the Kisei West Line, and on 15 July 1959 it was absorbed into the Kisei Main Line when the opening of the section between Mikisato and Atashika brought a renaming of the route. The station became unstaffed in 1985, and at the same time it gained selected stops by the Kuroshio limited express. With the privatisation of JNR on 1 April 1987 control passed to West Japan Railway Company. The station building was refurbished in December 2002, and from 12 March 2011 all Kuroshio express services have called here. The facility comprises one island platform serving two tracks for crossing.

The station building houses the Koza Tourist Association, which runs canoe rentals for descending the nearby Koza River and uses the station as its base with reception, shop, changing rooms and an adjacent boathouse.