Shiroishi (Hokkaido · Sapporo Municipal Transportation Bureau)

Known weekday departures: 337/day · Known Sat & holiday departures: 295/day

First / last known departure (weekday): 6:11 / 24:24 (00:24 next day)

Busiest hour (known departures): 8:00–9:00 (29)

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 3 May 2026 (retrieved in spring/summer 2026).

• Tozai Line: Higashi Sapporo ⇄ Nango nanachome

Shiroishi Station opened on 10 June 1976 when the Sapporo Municipal Subway's Tōzai Line began service between Kotoni Station and Shiroishi Station; during construction the station was provisionally named Kanjō-dōri. It served as the line's terminus until 21 March 1982, when the extension relocated the terminus to Shin-Sapporo Station and Shiroishi became a through station. Numbered T13, the station has a single island platform serving two tracks, with platform screen doors that began operating on 11 November 2008. It lies at the junction of Kanjō-dōri and Nangō-dōri in Shiroishi-ku, in a busy, mid-sized commercial district, and keeps its ordinary kanji name because it sits about 1.6 km from JR Hokkaido's Shiroishi Station, too far to serve as a transfer point.

A 2011 city hazard map designated Shiroishi Station as at risk of flooding from a possible breach of the Motsukisamu River, and the city recommends that people evacuate before floodwaters arrive rather than enter the station once they do.