Koyaguchi

Known weekday departures: 46/day · Known Sat & holiday departures: 46/day

First / last known departure (weekday): 5:35 / 23:38

Busiest hour (known departures): 7:00–8:00 (5)

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).

• JR Wakayama Line: Kii-Yamada ⇄ Nakaiburi

Kōyaguchi Station opened on 29 March 1901 as Nakura Station on the Kiwa Railway, taking the name of the Nakura district where it was built and serving as a planned freight collection point along the Mount Kōya pilgrimage route. It was renamed to Kōyaguchi on 1 January 1903. The Kiwa Railway was sold to the Kansai Railway in 1904, and that line in turn was nationalised in 1907; the station became part of the Wakayama Line in 1909. Freight handling ended on 1 October 1971 and parcels on 1 February 1984. Privatisation on 1 April 1987 brought the station under JR West, and ICOCA was added on 14 March 2020; the station was de-staffed all day from 1 April 2022.

Despite the station's name pointing to Mount Kōya, the actual transfer point for Nankai's Kōyasan Station is two stops away at Hashimoto; Nankai's own Kudoyama Station, on the Kōya Line, sits about 3 km south of Kōyaguchi.