Oiso

Weekday departures: 272/day in the available timetable data · Sat & holiday departures: 188/day in the available timetable data

Earliest / latest departure in the available data (weekday): 4:47 / 24:51 (00:51 next day)

Busiest hour in the available data: 19:00–20:00 (27)

0:00 ─ 23:00

Figures are typical departures in the timetable data, not a live service count.

Timetable data as of 3 May 2026.

The timetable data is incomplete for some or all lines at this station, so the weekday and Sat & holiday figures are departures in the available timetable data, not totals.

Lines where the timetable data is incomplete:

• Tokaido Main Line: timetable covers only part of the line

• Tokaido Main Line: Hiratsuka ⇄ Ninomiya

Ōiso Station opened on 11 July 1887 on the Tōkaidō Main Line of the Japanese Government Railways, then a brand-new section between the old Yokohama Station and Kōzu. The stop was not part of the original route plan; it was added after the physician Matsumoto Ryōjun lobbied for a station to support a new seaside-bathing resort. Freight traffic ended in 1962 and parcel handling in 1972. Operation passed to JR East at the privatisation of the Japanese National Railways on 1 April 1987. Suica IC fare gates were introduced on 18 November 2001, and the Midori no Madoguchi ticket office closed in September 2021.

The station was added to the Tōkaidō Main Line only after the physician Matsumoto Ryōjun lobbied for a stop to support the opening of a sea-bathing resort nearby.