• System name: Seoul Metropolitan Subway
• Native name: 수도권 전철 or 首都圈電鐵
• Operational Lines: 7
• Lines Under Construction: 6

• Note: Excluding the Metro System: Seoul Subway and Incheon Subway

MapEdit

Operational LinesEdit

Color	Line	Terminals	Year Opened	Newest Extension	Length (km²)	Stations
	Line 1	Soyosan — Cheongnyangni, Seoul Station — Incheon/Sinchang	1974	2006	190.6	89
	Line 3	Daehwa — Jichuk	1996	—	19.2	10
	Line 4	Namtaeryeong — Oido	2000	—	39.4	23
	Bundang Line	Seolleung — Bojeong	1994	2007	27.7	20
	Jungang Line	Yongsan — Yongmun	1939	2010	72.0	26
	Gyeongui Line	Seoul Station — Munsan	1905	—	46.3	20
	Airport Express (A'REX)	Gimpo Airport — Incheon International Airport	2007	—	37.6	6