Train service
No publicly available departure data for this station.
Location
Notes
The village name combines kanji from two predecessor villages — Ōkawa ("big river" 大川) and Nakajima — fused into Ōnakayama when they merged in the late Edo period, after the Hakodate magistrate's pioneer officer Nakajima Tatsusaburō.
Sources
Last updated: 2026-05-18