|Locale||Tokyo, Chiba Prefecture|
|Rolling stock||E231-0 series, E231-500 series, E231-800 series|
|Daily ridership||2,359,390（Daily 2015）|
|Line length||60.2 km (37.4 mi)|
|Track gauge||1,067 mm (3 ft 6 in)|
|Electrification||1,500 V DC overhead catenary|
Chūō-Sōbu Line is part of the East Japan Railway Company (JR East) network, but it operates on separate tracks along the right-of-way of the Chūō Main Line (Chūō Line (Rapid)) and Sōbu Main Line (Sōbu Line (Rapid)), providing service between Mitaka Station in the cities of Mitaka and Musashino and Chiba Station in Chiba.
The term Kankō (緩行, lit. "slow run") distinguishes local trains on the Chūō-Sōbu line from rapid service trains running on the Chūō Main Line between Mitaka and Ochanomizu and on the Sōbu Main Line between Kinshichō and Chiba.
- Regularly, trains terminate at Chiba or Tsudanuma at the east side, and terminate at Nakano or Mitaka at the west side
- All trains stop at every station.
Tōzai Line through service
All through service trains enter the Tōzai Line at either Nakano, or Nishi-Funabashi. These trains operate within the following routes:
- Mitaka – Nakano – (Tōzai Line) – Nishi-Funabashi – Tsudanuma (weekday mornings/evenings only)
- Nakano – (Tōzai Line) – Nishi-Funabashi – Tsudanuma (weekday mornings/evenings only)
- Mitaka – Nakano – (Tōzai Line) – Nishi-Funabashi
- Mitaka – Nakano – (Tōzai Line) – Nishi-Funabashi – (Tōyō Rapid Railway Line) – Tōyō-Katsutadai
Certain limited express and seasonal trains run through, or stop at stations on this line. For information on the Shinjuku Wakashio and the Shinjuku Sazanami that make stops on the Chūō-Sōbu Line at Akihabara, see their respective articles.
Former Early morning / Late night
At around 9 -10pm, a few westbound trains headed beyond Mitaka onto the Chūō Line (Rapid), with some terminating at Musashi-Koganei, and the others at Tachikawa. The other trains during the hour operated regularly.
At around 4 - 6am and 11pm - 1am, Chūō-Sōbu Line services were divided at Ochanomizu Station, into two sections.
- At the western section (Mitaka – Ochanomizu), Chūō Line (Rapid) trains ran through the Chūō-Sōbu Line tracks between Nakano and Ochanomizu, with services serving between Tokyo and as far as Takao, or even Ōme, which stops at all stations.
- At the eastern section (Ochanomizu – Chiba), local trains operated and terminated at the two ends of the section.
This service pattern last operated on 13 March 2020. To prepare for the eventual installation of platform doors on Chūō-Sōbu Line platforms and the future addition of Green Cars on the Rapid line, Chūō Line Rapid service trains no longer operate on the Chūō-Sōbu Line tracks.
- ●: All trains stop
- ■: Some trains pass
- ▲: All trains pass on weekends and holidays
- ｜: All trains pass
|Chūō Line||Sōbu Line|
|Sōbu Main Line||Chiba||千葉||-||From
|Makuhari||幕張||1.6||7.6||31.6||●||｜||Keisei Chiba Line (Keisei Makuhari: KS53)|
|Makuharihongō||幕張本郷||2.0||9.6||29.6||●||｜||Keisei Chiba Line (Keisei Makuharihongō: KS52)|
|Tsudanuma||津田沼||2.9||12.5||26.7||●||●||■||Shin-Keisei Line (Shin-Tsudanuma: SL23)||Narashino|
|Moto-Yawata||本八幡||1.6||21.8||17.4||●||｜||Toei Shinjuku Line (S-21)||Ichikawa|
|Kameido||亀戸||1.9||32.9||6.3||●||｜||Tōbu Kameido Line (TS44)||Kōtō|
|Sōbu Main Line Branch||From|
|Ryōgoku||両国||1.5||35.9||1.5||●||To Tokyo and
|Toei Ōedo Line (E-12)|
|Asakusabashi||浅草橋||0.8||36.7||2.3||●||Toei Asakusa Line (A-16)||Taitō|
|Chūō Main Line||From|
|Suidōbashi||水道橋||0.8||39.5||3.4||●||｜||Toei Mita Line (I-11)|
|Sendagaya||千駄ケ谷||0.7||44.7||8.6||●||｜||Toei Ōedo Line (Kokuritsu-kyogijo: E-25)||Shibuya|
|Chūō Main Line|
|Higashi-Nakano||東中野||1.1||48.9||12.8||●||｜||Toei Ōedo Line (E-31)||Nakano|
|Nakano||中野||1.9||50.8||14.7||●||●||■||Tokyo Metro Tozai Line (T-01) |
(some trains through to Mitaka)
|Ogikubo||荻窪||1.4||54.8||18.7||●||●||■||Tokyo Metro Marunouchi Line (M-01)|
|Kichijōji||吉祥寺||1.9||58.6||22.5||●||●||■||Keiō Inokashira Line (IN17)||Musashino|
|Mitaka||三鷹||1.6||60.2||24.1||●||●||■||Chūō Line (JC12)||Mitaka|
Trains used on the line are based at Mitaka Depot.
- E231-0 series 10-car EMUs (yellow stripe) (since February 2000)
- E231-500 series 10-car EMUs (yellow stripe) (since 1 December 2014)
Tozai Line - Toyo Rapid Line through service
Trains run between Mitaka and Tsudanuma (Chūō-Sōbu Line) or Toyo-Katsutadai (Toyo Rapid Line), all via the Tokyo Metro Tozai Line between Nakano and Nishi-Funabashi.
- E231-800 series 10-car EMUs (light blue and blue stripe) (Does not run on the Toyo Rapid Line)
- Tokyo Metro 05 series 10-car EMUs (light blue stripe)
- Tokyo Metro 07 series 10-car EMUs (light blue stripe)
- Tokyo Metro 15000 series 10-car EMUs (light blue stripe)
Rolling stock used in the past
- 101 series EMUs (yellow livery) (from 1963 until November 1988)
- 103 series 10-car EMUs (yellow livery) (from 1979 until March 2001)
- 201 series 10-car EMUs (yellow livery) (from 1982 until November 2001)
- 205 series 10-car EMUs (yellow stripe) (from August 1989 until November 2001)
- 209-500 series 10-car EMUs (yellow stripe) (from December 1998 until 19 April 2019)
- E231-900 series 10-car EMU (yellow stripe) (from 27 March 1999 as 209-950 series, until 25 February 2020)
Tozai Line - Toyo Rapid Line through service
- 301 series 10-car EMUs (light blue stripe) (on Tozai Line inter-running services from 1966 until 2003)
Chūō Line (Early morning / Late night)
- See Chūō Line (Rapid)#Rolling stock for the train types which operated this service until 13 March 2020.
- "平成27年 大都市交通センサス 首都圏報告書" (PDF). P.92. 国土交通省.
- "2020年3月ダイヤ改正について (Schedule changes for March 2020)" (PDF). 13 December 2019.
- JR首都圏通勤電車図鑑. Japan Railfan Magazine. Vol. 48 no. 570. Koyusha Co., Ltd. October 2008. p. 27.
- 中央総武緩行線でE231系500番台が営業運転を開始 [E231-500 series enters revenue service on Chuo-Sobu Line]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 2 December 2014. Retrieved 2 December 2014.
- "Tokyo Railway Labyrinth: Good-bye to the Sobu 209-500 Series Trains". Tokyo Railway Labyrinth. 2019-06-09. Retrieved 2019-07-13.
- 特集 209系 第２章へ [209 series - The second chapter]. Japan Railfan Magazine. Vol. 49 no. 576. Koyusha Co., Ltd. April 2009. pp. 9–47.
- "E231系900番代ミツB901編成大宮入場" [E231-900 series set B901 entered Ōmiya Rolling Stock Center]. Retrieved 4 March 2020.
- "【ミツB901離脱】E231系900番台が総武線から引退" [B901 withdrawn: E231-900 series removed from Chūō-Sōbu Line].
|Wikimedia Commons has media related to Chūō-Sōbu Line.|
- Chūō-Sōbu Line (Japan Visitor) (in English)