Tōbu Koizumi Line

Koizumi Line

A Koizumi Line train approaching Narushima Station in May 2025
Overview
Native name	小泉線
Status	In service
Owner	Tobu Railway Co., Ltd.
Locale	Gunma Prefecture
Termini	Tatebayashi Nishi-Koizumi/Higashi-Koizumi
Stations	10 total 7 (main branch), 3 (Ota branch)
Service
Type	Commuter rail
System	Tobu Railway
Route number	TI
Operator(s)	Tobu Railway Co., Ltd.
History
Opened	12 March 1917 (12 March 1917)
Technical
Track gauge	1,067 mm (3 ft 6 in)
Electrification	1,500 V DC, overhead catenary

The Koizumi Line (小泉線, Koizumi-sen), operated by the private railway operator Tobu Railway, connects Tatebayashi Station located in Tatebayashi, Gunma to Nishi-Koizumi Station located in Ōizumi, Gunma as well as Higashi-Koizumi Station in Ōizumi town to Ōta Station in Ōta, Gunma Japan.

Stations

No.	Name		Connections	Location
	Tatebayashi	館林	Isesaki Line (TI10) Sano Line (TI10)	Tatebayashi	Gunma
	Narushima	成島		Tatebayashi
	Hon-Nakano	本中野		Ōra
	Shinozuka	篠塚		Ōra
	Higashi-Koizumi	東小泉	Koizumi Line (branch line) for Ōta	Ōizumi
	Koizumimachi	小泉町
	Nishi-Koizumi	西小泉
The line splits at Higashi-Koizumi.
	Higashi-Koizumi	東小泉	Koizumi Line for Tatebayashi/Nishi-Koizumi	Ōizumi	Gunma
	Ryūmai	竜舞		Ōta
	Ōta	太田	Isesaki Line (TI18) Kiryū Line (TI18)	Ōta

Abandoned stations

Shin-Koizumi Station - Sengokugashi Station
Kobugannon Station (between Higashi-Koizumi Station and Shinozuka Station)
Mujinazuka Station (between Narushima Station and Hon-Nakano Station)

History

The first section of the line from Tatebayashi Station to Koizumimachi Station was opened for passenger service on March 12, 1917, operated by the Chūgen Railway, which was purchased by Tobu Railway company in 1937.

The 3 km Sengokugashi Freight Line (仙石河岸貨物線) from Koizumimachi Station to Sengokugashi Station (仙石河岸駅) opened on April 13, 1939, as a freight-only branch line. Passenger services as far as Nishi-Koizumi commenced in 1941.

In 1941, Higashi-Koizumi Station to Ōta Station section opened on June 1, 1941, to service the Nakajima Aircraft Company Ōta and Koizumi plants. The lines were electrified in 1943.

The Nishi-Koizumi to Sengoku freight branch closed in 1976, and freight services ceased on the line in 1996.

References

This article incorporates material from the corresponding article in the Japanese Wikipedia.

Ryōzō Kawashima (2004). Zenkoku Tetsudo Jijo Daikenkyu. Tōkyō: Sōshisha. ISBN 4-7942-1291-7.
Yukiyasu Sugizaki (2000). Ekisha Sai-hakken. Tōkyō: JTB. ISBN 4-533-03675-9.
Shunzō Miyawaki (1997). Tetsudo Haisenato o Aruku. Tōkyō: JTB. ISBN 4-533-02743-1.

External links

History of Tobu Railway (in Japanese)

Tobu Railway Koizumi Line
Tatebayashi Narushima Hon-Nakano Shinozuka Higashi-Koizumi Koizumimachi Nishi-Koizumi
Ōta Branch Line:	Higashi-Koizumi Ryūmai Ōta (>> Tobu Kiryu Line)

Tobu Railway lines
Main lines	Tobu Skytree Line Kameido Line Daishi Line Isesaki Line Sano Line Koizumi Line Kiryū Line Nikkō Line Utsunomiya Line Kinugawa Line Tōbu Urban Park Line
Tojo lines	Tojo Line Ogose Line
Closed lines	Ikaho Tramway Keishi Line Kumagaya Line Nikkō Tramway Ōya Line Yaita Line
Related lines	Akechidaira Ropeway Yagan Railway
Major stations	Asakusa Funabashi Ikebukuro Kasukabe Kawagoe Kita-Senju Ōmiya Tōbu-Dōbutsu-Kōen Tōbu Nikkō

Transit in Greater Tokyo
Shinkansen	Tōhoku Shinkansen Yamagata Akita Jōetsu Shinkansen Hokuriku Shinkansen Tōkaidō Shinkansen Chūō (planned)
JR East lines passing through Central Tokyo	Yamanote Line Keihin–Tōhoku Line - Negishi Line Chūō–Sōbu Line Chūō Line Yokosuka Line - Sōbu Line (Rapid) Utsunomiya Line & Takasaki Line - Tōkaidō Line Ueno–Tokyo Line Saikyō Line Shōnan–Shinjuku Line Jōban Line (Rapid) Jōban Line (Local) Keiyō Line
JR East lines in satellite cities or suburbs	Musashino Line Yokohama Line Nambu Line Tsurumi Line Sagami Line Hachikō Line/Kawagoe Line Ryōmō Line Jōetsu Line Agatsuma Line Shin'etsu Main Line Tohoku Direction Karasuyama Line Nikkō Line Chuo Direction Chūō Main Line Itsukaichi Line Ōme Line Koumi Line Shinonoi Line Ōito Sobu Direction Sōbu Main Line Sotobō Line Uchibō Line Kururi Line Tōgane Line Joban Direction Mito Line Narita Line Suigun Line Kashima Line Tokaido Direction Itō Line
Tokyo Metro	Chiyoda Line Fukutoshin Line Ginza Line Hibiya Line Marunouchi Line Namboku Line Tōzai Line Yūrakuchō Line Hanzōmon Line
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Yokohama Municipal Subway	Blue Line Green Line
Keikyu	Main Line Airport Daishi Kurihama Zushi
Keio Corporation	Keiō Line Keiō New Line Dōbutsuen Line Keibajō Line Sagamihara Line Takao Line Inokashira Line
Keisei	Main Line Chiba Line Chihara Line Higashi-Narita Line Kanamachi Line Matsudo Line Oshiage Line Narita Sky Access Line
Odakyu	Odawara Line Enoshima Line Tama Line
Seibu Railway	Ikebukuro Line Sayama Line Seibu Chichibu Line Seibu Yūrakuchō Line Toshima Line Shinjuku Line Haijima Line Kokubunji Line Seibuen Line Tamagawa Line Tamako Line
Sagami Railway	Sōtetsu Main Line Sōtetsu Izumino Line Sōtetsu–JR Link Line Sōtetsu Shin-Yokohama Line
Tobu Railway	Tobu Skytree Line Kameido Line Daishi Line Isesaki Line Sano Line Koizumi Line Kiryū Line Nikkō Line Kinugawa Line Utsunomiya Line Tōbu Urban Park Line Tojo Line Ogose Line
Tōkyū Railways	Den-en-toshi Line Ikegami Line Meguro Line Ōimachi Line Tōkyū Tamagawa Line Tōyoko Line Kodomonokuni Line Tōkyū Shin-Yokohama Line
Other heavy rail lines	Hokusō Line Kantō Railway Jōsō Line Ryūgasaki Line Nagareyama Line Rinkai Line Saitama Railway Line Shibayama Railway Line Tōyō Rapid Railway Line Tsukuba Express Minatomirai Line
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Monorails	Chiba Urban Monorail Disney Resort Line Shonan Monorail Tama Toshi Monorail Line Haneda Airport Line
Trams and light rails	Enoden Setagaya Line Toden Arakawa Line Utsunomiya Light Rail
People movers	Yamaguchi Line Yūkarigaoka
Hinterland	Chichibu Main Line Jōmō Line Jōshin Line Watarase Keikoku Yagan Mooka Line Minato Line Ōarai Kashima Line Chōshi Electric Railway Line Isumi Line Kominato Line
Funiculars and aerial lifts	Ōyama Cable Car Hodosan Ropeway (Takao Tozan Railway Mitake Tozan Cable Car ) (Nokogiriyama Ropeway Mount Tsukuba Cable Car Mount Tsukuba Ropeway) Akechidaira Ropeway Ikaho Ropeway Yokohama Air Cabin
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Major terminals	Rail Akihabara Chiba Hachiōji Ikebukuro Kita-Senju Mito Odawara Ōmiya Ōtemachi Shibuya Shinagawa Shinjuku Tachikawa Tokyo Ueno Yokohama Shin-Yokohama Bus Busta Shinjuku T-CAT Airports Haneda Narita Chōfu Ibaraki Ports Yokohama Tokyo Heliports Tokyo Heliport Camp Zama
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