Hachikō Line

Komagawa Station in Hidaka, Saitama is the boundary point between two distinct sections. The southern section from Hachiōji to Komagawa is electrified at 1,500 V DC. Some trains terminate at Komagawa, while others continue over the Kawagoe Line to Kawagoe Station.

The non-electrified northern section connects Komagawa with Kuragano. All trains continue on the Takasaki Line to Takasaki, where transfer to the Jōetsu Shinkansen is available. There are no through services connecting the southern and northern halves of the line.

The Hachikō Line takes the first kanji of its name from the first character of Hachiōji (八王子) and the second kanji from the first character of Takasaki (高崎).

• All trains stop at every station.
• Stations marked "o" or "^" allow passing; stations marked"|" do not. Stations marked "∥" are double-tracked.

Hachiōji - Komagawa

Station	Japanese	Distance (km)		Transfers	Track	Location
		Between stations	Total
Hachiōji	八王子	-	0.0	JC Chūō Line (Rapid) JH Yokohama Line Keiō Line (Keiō-Hachiōji)	o	Hachiōji	Tokyo
Kita-Hachiōji	北八王子	3.1	3.1		o
Komiya	小宮	2.0	5.1		o
Haijima	拝島	4.8	9.9	JC Ōme Line JC Itsukaichi Line Seibu Haijima Line	o	Akishima
Higashi-Fussa	東福生	2.8	12.7		o	Fussa
Hakonegasaki	箱根ヶ崎	3.0	15.7		o	Mizuho, Nishitama District
Kaneko	金子	4.8	20.5		o	Iruma	Saitama
Higashi-Hannō	東飯能	5.1	25.6	Seibu Ikebukuro Line	o	Hannō
Komagawa	高麗川	5.5	31.1	■ Kawagoe Line (through to Kawagoe) ■ Hachikō Line (for Takasaki)	o	Hidaka

Komagawa - Takasaki

Station	Japanese	Distance (km)		Transfers	Track	Location
		Between stations	Total
Komagawa	高麗川	5.5	31.1	■ Kawagoe Line ■ Hachikō Line (for Hachiōji)	o	Hidaka	Saitama
Moro	毛呂	5.8	36.9		o	Moroyama, Iruma District
Ogose	越生	2.7	39.6	Tobu Ogose Line	|	Ogose, Iruma District
Myōkaku	明覚	5.2	44.8		o	Tokigawa, Hiki District
Ogawamachi	小川町	8.0	52.8	Tobu Tojo Line	o	Ogawa, Hiki District
Takezawa	竹沢	3.5	56.3		o
Orihara	折原	4.0	60.3		|	Yorii, Ōsato District
Yorii	寄居	3.6	63.9	Tobu Tojo Line ■ Chichibu Main Line	o
Yōdo	用土	4.5	68.4		|
Matsuhisa	松久	2.7	71.1		|	Misato, Kodama District
Kodama	児玉	4.8	75.9		o	Honjō
Tanshō	丹荘	4.1	80.0		o	Kamikawa, Kodama District
Gunma-Fujioka	群馬藤岡	4.7	84.7		o	Fujioka	Gunma
Kita-Fujioka	北藤岡	3.7	88.4		^
Kuragano	倉賀野	3.6	92.0	■ Takasaki Line (for Tokyo)	∥	Takasaki
Through to Takasaki on the Takasaki Line
Takasaki	高崎	4.4	96.4	Joetsu Shinkansen Hokuriku Shinkansen ■ Shinetsu Main Line ■ Joetsu Line ■ Ryōmō Line ■ Agatsuma Line ■ Jōshin Dentetsu Jōshin Line	∥	Takasaki	Gunma

• 209-3500 series 4-car EMUs x 5 (Kawagoe Line/Hachiko Line services since 7 May 2018)
• E231-3000 series 4-car EMUs x 6 (Kawagoe Line/Hachiko Line services since 19 February 2018)
• KiHa 110 series DMUs (formed as 1- to 3-car trains for services north of Komagawa) (since 18 March 1993)[1]

From 2017, former E231-0 series ten-car sets based at Mitaka Depot for use on Chūō–Sōbu Line services were reformed and converted to become four-car E231-3000 series sets based at Kawagoe for use on Kawagoe Line and Hachiko Line services.[2] The first set entered revenue service on the line on 19 February 2018.[3]

From 2018, former 209-500 series ten-car sets based at Mitaka Depot for use on Chūō–Sōbu Line services were reformed and converted to become four-car 209-3500 series sets based at Kawagoe for use on Kawagoe Line and Hachiko Line services.[4]

• 
  209-3500 series
• 
  E231-3000 series
• 
  KiHa 110 series

The first section of the line, named the Hachikō North Line (Japanese: 八高北線, Hepburn: Hachikō-kita-sen), opened from Kuragano to Kodama on 1 July 1931, followed by the section from Hachioji to Higashi-Hanno, named the Hachikō South Line (Japanese: 八高南線, Hepburn: Hachikō-minami-sen), on 10 December 1931.[1] The Hachiko North Line was extended southward from Kodama to Yorii on 25 January 1933, and the Hachiko South Line was extended northward from Higashi-Hanno to Ogose on 15 April 1933.[1] The Hachiko South Line was further extended northward from Ogose to Ogawamachi on 24 March 1934, and the last section between Ogawamachi and Yorii opened on 6 October 1934, connecting the north and south sections, and completing the entire line, which became known simply as the Hachiko Line.[1]

All passenger operations were switch from steam haulage to electric trains from 20 November 1958.[1]

CTC signalling was commissioned over the entire line from 27 February 1985.[1] On 1 April 1987, with the privatization and splitting of Japanese National Railways (JNR), the Hachiko Line was transferred to the ownership of JR East.[1]

From 16 March 1996, the Hachioji to Komagawa section was electrified at 1,500 V DC, and services on the non-electrified section north of Komagawa to and from Takasaki were operated separately as one-man driver only operation services using KiHa 110 series DMUs,[1][7] and the southern section began through service operations to the Kawagoe Line to Kawagoe Station. Also from the same date until 11 March 2022, some morning rush hour services left the Hachikō Line at Haijima Station and travel to Tokyo via the Ōme Line and Chūō Line; the reverse happened during the evening rush.

Starting 12 March 2022, the southern section from Hachiōji to Komagawa (and through services to the Kawagoe Line) began one-man driver only operation services using the existing 209-3500 and E231-3000 series EMUs.