Shimo-Ochiai Station
railway station in Shinjuku, Tokyo, Japan

Shimo-Ochiai Station (下落合駅, Shimo-Ochiai-eki) is a railway station on the Seibu Shinjuku Line in Shinjuku, Tokyo, Japan, operated by the private railway operator Seibu Railway.
Lines
Shimo-Ochiai Station is served by the 47.5 km Seibu Shinjuku Line from Seibu-Shinjuku in Tokyo to Hon-Kawagoe in Saitama Prefecture. Located between Takadanobaba and Nakai, it is 3.2 km from the Seibu-Shinjuku terminus.
During the daytime off-peak, the station is served by six trains per hour in either direction.
Station layout
The station consists of two ground-level side platforms serving two tracks.
Platforms
History
The station opened on 16 April 1927.
Station numbering was introduced on all Seibu Railway lines during fiscal 2012, with Shimo-Ochiai Station becoming "SS03".
Passenger statistics
In fiscal 2013, the station was the 64th busiest on the Seibu network with an average of 11,221 passengers daily.
The passenger figures for previous years are as shown below.
This brief starts where responsible research should: with the source description of “Shimo-Ochiai Station” as railway station in Shinjuku, Tokyo, Japan. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as railway station in Shinjuku, Tokyo, Japan. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Aug 23, 2026. The linked authority identifier is Q843464. Authority coordinates are 35.716, 139.696. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1927, 2012 and 2013.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Shimo-Ochiai Station”, its source revision and the description used here.
- Expand the search: follow Shimo-Ochiai Station primary sources, Shimo-Ochiai Station archive and Shimo-Ochiai research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Shimo-Ochiai Station”?
- What physical evidence or contemporary plan supports the description?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Shimo-Ochiai Station” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.