Chiba-Minato

Weekday departures: 278/day in the available timetable data · Sat & holiday departures: 102/day in the available timetable data

Earliest / latest departure in the available data (weekday): 4:54 / 24:52 (00:52 next day)

Busiest hour in the available data: 8:00–9:00 (23)

0:00 ─ 23:00

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

Timetable data as of 2 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 complete: JR Keiyo Line

Lines where the timetable data is incomplete:

• Chiba Urban Monorail Line 1: no timetable data

• JR Keiyo Line: Inage-Kaigan ⇄ Soga

Chiba-Minato Station opened on 3 March 1986 on the JNR Keiyō Line under the kanji name 千葉港, officially read Chiba-Minato; from the start, route maps and rollsigns rendered the name as 'Chiba-Minato' to prevent the misreading 'Chibakō'. The station passed to JR East on 1 April 1987. The Keiyō Line was extended to Soga on 1 December 1988, and the name was formally rewritten in hiragana as Chiba-Minato on 14 March 1992. The Chiba Urban Monorail Line 1 opened from here on 1 August 1995. Daytime Keiyō Line rapid services began stopping on 2 December 2000, and all rapid services from 1 December 2002. Suica acceptance began at the JR station on 18 November 2001.

When the Keiyō Line opened on 3 March 1986 the station's original Sino-Japanese name '千葉港' was ambiguous in reading — operators printed signs as 'Chiba-Minato' from day one to prevent the alternative 'Chibakō', and the formal name change to the hiragana form did not arrive until 1992.