The JR East side of the station consists of two island platforms serving four tracks. The station has a "Midori no Madoguchi" staffed ticket office.[1] The Seibu portion of the station has one side of a former island platform (Platform 5) parallel to and north of the JR platforms.[2] Platform 6 is now closed.[2] Platform 7 is further north again but is above and perpendicular to the other platforms.[2]
JR East
JC16 Kokubunji Station
国分寺駅
JR East exit, July 2015
General information
Location
2-1-23 Honchō, Kokubunji-shi, Tokyo 185-0021 Japan
The east end of platform 5 viewed from the JR East platforms, November 2013
Seibu Kokubunji Station Platform 7, April 2021
History
A steam-hauled Chuo Line train at Kokubunji Station in 1915A Tamako Railway train at Kokubunji Station in 1937
What is now the JR East station opened on 11 April 1889.[3] The Seibu Kokubunji Line platforms opened on 21 December 1894, and the Tamako Railway (present-day Seibu Tamako Line) platforms opened on 6 April 1928.[2]
Station numbering was introduced on all Seibu Railway lines during fiscal 2012, with Kokubunji Station becoming "SK01" on the Seibu Kokubunji Line and "ST01" on the Seibu Tamako Line.[4]
Passenger statistics
In fiscal 2019, the station was used by an average of 112,090 passengers daily (boarding passengers only), making it the 31st busiest in the JR East network.[5] The Seibu station was used by an average of 117,796 passengers daily making it the sixth busiest station served by Seibu.[6]
The passenger figures for previous years are as shown below. Note that JR East figures consider only boarding passengers whereas Seibu figures consider both entering and exiting passengers.
^ ab各駅情報（国分寺駅） [Station Information (Kokubunji Station)] (in Japanese). Japan: East Japan Railway Company. Retrieved 26 November 2012.
^ abcdKawashima, Ryozo (February 2011). 日本の鉄道 中部ライン 全線・全駅・全配線 第１１巻 埼玉南部・東京多摩北部 [Railways of Japan - Chubu Line - Lines/Stations/Track plans - Vol 11 Southern Saitama and Northern Tama Tokyo]. Japan: Kodansha. pp. 10–88. ISBN978-4-06-270071-9.
^Kawashima, Ryozo (May 2010). 日本の鉄道 中部ライン 全線・全駅・全配線 第２巻 三鷹駅―八王子エリア [Railways of Japan - Chubu Line - Lines/Stations/Track plans - Vol 2 Mitaka Station - Hachioji Area]. Japan: Kodansha. p. 43. ISBN978-4-06-270062-7.
^西武線全駅で駅ナンバリングを導入します [Station numbering to be introduced at all Seibu stations] (PDF). News Release (in Japanese). Japan: Seibu Railway. 23 February 2012. Archived from the original(PDF) on 24 September 2015. Retrieved 17 November 2013.
^各駅の乗車人員 (2020年度) [Station passenger figures (Fiscal 2020)] (in Japanese). Japan: East Japan Railway Company. Retrieved 29 January 2021.
^各駅の乗車人員 (2020年度) [Station passenger figures (Fiscal 2020)] (in Japanese). Japan: Seibu Railway. Retrieved 29 January 2021.
^各駅の乗車人員 (2000年度) [Station passenger figures (Fiscal 2000)] (in Japanese). Japan: East Japan Railway Company. Archived from the original on 9 October 2014. Retrieved 17 November 2013.
^各駅の乗車人員 (2005年度) [Station passenger figures (Fiscal 2005)] (in Japanese). Japan: East Japan Railway Company. Archived from the original on 9 October 2014. Retrieved 17 November 2013.
^駅別乗降人員 2005（平成17）年度 1日平均 [Average daily station usage figures (fiscal 2005)] (PDF) (in Japanese). Japan: Seibu Railway. Archived from the original(PDF) on 5 March 2016. Retrieved 18 August 2014.
^各駅の乗車人員 (2010年度) [Station passenger figures (Fiscal 2010)] (in Japanese). Japan: East Japan Railway Company. Archived from the original on 6 October 2014. Retrieved 17 November 2013.
^駅別乗降人員 2010（平成22）年度 1日平均 [Average daily station usage figures (fiscal 2010)] (PDF) (in Japanese). Japan: Seibu Railway. Archived from the original(PDF) on 26 June 2011. Retrieved 17 November 2013.
^各駅の乗車人員 （2015年度） [Station passenger figures (Fiscal 2015)] (in Japanese). Japan: East Japan Railway Company. Retrieved 2 September 2020.
^駅別乗降人員 2015（平成27）年度 1日平均 [Average daily station usage figures (fiscal 2015)] (PDF) (in Japanese). Japan: Seibu Railway.
