Ishioka

Weekday departures: 129/day in the available timetable data · Sat & holiday departures: 122/day in the available timetable data

Earliest / latest departure in the available data (weekday): 5:02 / 24:19 (00:19 next day)

Busiest hour in the available data: 6:00–7:00 (10)

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:

• JR Joban Line: timetable covers only part of the line

• JR Joban Line: Hatori ⇄ Takahama (Ibaraki)

Ishioka Station opened on 4 November 1895 on the Nippon Railway Tsuchiura Line. It was nationalised in 1906 and reclassified as a Jōban Line station in 1909. The private Kashima Sangū Railway began service from Ishioka on 8 June 1924; in 1965 it merged into Kantō Railway and in 1979 was spun off as the Kashima Railway. The Kashima Railway line closed on 1 April 2007, after which Ishioka became a JR East single-operator station. A 3.66-billion-yen project from 2015 added an elevated station house, an east-west passage and a dedicated BRT plaza; the new elevated building opened in March 2016.

The platform jingles include arrangements of "Bara ga Saita" by Mike Maki on platform 1 and a setting of the festival music from the Hitachi-no-Kuni Sōsha-gū grand festival on platform 3.