List of North American rapid transit systems

This is a list of North American rapid transit systems by ridership. These heavy rail or rapid transit systems are also known as metro or subway systems. This list of systems in North America does not include light rail, even when they are integrated with heavy rail. Daily and annual ridership figures are based on "average weekday unlinked passenger trips", unless otherwise indicated. For metro systems in the United States and Canada, the annual ridership figures for 2023 and average weekday ridership figures for the First Quarter of 2024 come from the American Public Transportation Association's ridership reports statistics, unless otherwise noted. Ridership figures for Mexico come from the National Institute of Geography and Statistics, specifically the Economy and Productive Sectors - Passenger Transit information. Ridership figures for the Dominican Republic come from the Directorate of Operations Santo Domingo Metro report for the year 2013.

	System	Country	City/area served	Annual ridership	Avg. daily weekday boardings	System length	Avg. daily boardings per mile	Year opened	Stations	Lines
1	New York City Subway	United States	New York City				25,251	1904	472	24
2	Mexico City Metro	Mexico	Mexico City	1,115,300,000	2,397,892		17,037	1969	195	12
3	Toronto subway	Canada	Toronto				20,305	1954	70	3
4	Montreal Metro	Canada	Montreal				21,816	1966	68	4
5	Washington Metro	United States	Washington, D.C. Metropolitan Area				3,683	1976	98	6
6	SkyTrain	Canada	Vancouver				9,030	1985	53	3
7	Chicago 'L'	United States	Chicago				3,780	1892	145	8
8	Metrorrey	Mexico	Monterrey	138,709,000	380,024		25,605	1991	40	3
9	MBTA subway	United States	Boston				7,187	1901	53	4
10	BART	United States	San Francisco Bay Area				1,280	1972	48	6
11	SEPTA Metro	United States	Philadelphia				4,733	1907	75	3
12	PATH	United States	Jersey City, Newark, NJ				13,449	1908	13	5
13	MARTA rail	United States	Atlanta				1,952	1979	38	4
14	Panama Metro	Panama	Panama City	91,932,890	180,000		21,176	2014	31	2
15	Santo Domingo Metro	Dominican Republic	Santo Domingo	61,270,054	177,844		10,461	2009	30	2
16	Metro Rail	United States	Los Angeles				3,667	1993	16	2
17	Miami Metrorail	United States	Miami				2,111	1984	23	2
18	PATCO Speedline	United States	Philadelphia				1,268	1936	14	1
19	Staten Island Railway	United States	New York City				1,279	1860	22	1
20	Baltimore Metro SubwayLink	United States	Baltimore				884	1983	14	1
21	RTA Rapid Transit	United States	Cleveland				553	1955	18	1
22	Tren Urbano	Puerto Rico	San Juan				1,318	2004	16	1