Aioi (Gunma)

Weekday departures: 3/day in the available timetable data

Earliest / latest departure in the available data (weekday): 10:04 / 12:07

Busiest hour in the available data: 10:00–11:00 (1)

0:00 ─ 23:00

Figures are typical departures in the timetable data, not a live service count.

Timetable data as of 14 May 2026.

The timetable data is incomplete for some or all lines at this station, so the weekday and Sat & holiday figures are departures in the available timetable data, not totals.

Lines where the timetable data is incomplete:

• Watarase Keikoku Line: no timetable data
• Tobu Kiryu Line: only trains from timetables filed under other lines

• Tobu Kiryu Line: Shin-Kiryu

Aioi Station opened on 15 April 1911 as the Ashio Railway's Aioi Station, then written 相生. On 1 July of the following year, 1912, the second character was changed from 生 to 老 — both spellings are read Aioi — both to avoid duplicating Aioi Station in Hyōgo Prefecture and to convey the sense of "growing old together," giving the present form 相老. Tobu Railway's own Aioi Station opened on 19 March 1913, making the site a connecting station between the two companies. The Ashio Railway was nationalized on 1 June 1918, and following the 1987 division and privatization of Japanese National Railways the Ashio Line was transferred to the Watarase Keikoku Railway on 29 March 1989. In 1991, platform extensions allowed Tobu's express — now limited express — "Ryōmō" to stop at the station.

When stations nationwide are arranged in gojūon order, this station, together with the identically pronounced but differently written Aioi stations (on JR West and the Nagaragawa Railway), is known to come at the very top of the list, as its name begins with "Aioi."