List of United States rapid transit systems

See also: List of North American rapid transit systems

The following is a list of all heavy rail rapid transit systems in the United States. It does not include statistics for bus or light rail systems; see: List of United States light rail systems by ridership for light rail systems. All ridership figures represent unlinked passenger trips, so line transfers on multi-line systems register as separate trips. The data is provided by the American Public Transportation Association's Ridership Reports.

Note: ridership does not mean unique passengers, it means total number of trips.

	System	Transit agency	City/area served	Annual ridership 2024 [1]	Avg. ridership weekdays, Q4 2024 [2]	System length	Avg. boardings per mile weekdays, Q4 2024	Opened	Stations	Lines
1	New York City Subway	NYCTA[note 1]	New York City	2,040,132,000	6,734,700	248 mi (399 km)[3]	27,156	1904[4]	472[4]	26[4]
2	Washington Metro	WMATA	Washington metropolitan area	166,654,000	519,700	129 mi (208 km)[5]	4,029	1976[5]	98[5]	6
3	Chicago "L"	CTA	Chicago	127,463,400	390,100	102.8 mi (165.4 km)[6]	3,795	1892[6]	146[6]	8[6]
4	MBTA subway ("The T")[note 2] (Blue, Orange, and Red lines)	MBTA	Boston	84,251,600	284,700	38 mi (61 km)[7]	7,492	1901	53[7]	3[7]
5	PATH	PANYNJ	Manhattan, Hudson County, Newark	62,489,400	211,600	13.8 mi (22.2 km)[8][9]	15,333	1908[10]	13[8]	4[11]
6	SEPTA Metro[note 3] (L, B, and M)	SEPTA	Philadelphia	59,009,800	219,000	36.7 mi (59.1 km)[12][13]	5,967	1907[14]	75[15]	3[15]
7	Bay Area Rapid Transit (BART)[note 4]	BART	San Francisco Bay Area	49,075,000	161,800	131.4 mi (211.5 km)[16]	1,359	1972[17]	50[16]	7[18]
8	MARTA rail	MARTA	Atlanta	29,416,400	89,000	47.6 mi (76.6 km)	1,870	1979[19]	38[20]	4[20]
9	Metro Rail[note 3] (B and D lines)	LACMTA	Los Angeles	22,471,200	69,400	17.4 mi (28.0 km)[21]	3,989	1993[21]	16[21]	2[21]
10	Metrorail	Miami-Dade Transit	Miami	14,911,300	50,900	24.4 mi (39.3 km)[22]	2,086	1984[23]	23[22]	2[22]
11	PATCO Speedline	PATCO	Philadelphia, Camden County	5,640,600	18,500	14.2 mi (22.9 km)[24]	1,303	1936[24]	13[24]	1[24]
12	Baltimore Metro SubwayLink	MTA	Baltimore	5,487,000	15,000[note 5]	15.5 mi (24.9 km)[25]	970	1983[26]	14[25]	1[25]
13	Staten Island Railway	SIRTOA[note 1]	Staten Island	4,743,000	18,500	14 mi (23 km)[3]	1,321	1860[27]	21[3]	1[3]
14	Tren Urbano	ATI	San Juan	4,438,400	19,600	10.7 mi (17.2 km)[28]	1,832	2004[28]	16[28]	1[28]
15	RTA Rapid Transit[note 3] (Red Line)	GCRTA	Cleveland	3,151,500	9,700	19 mi (31 km)[29]	511	1955[30]	18[29]	1[29]
16	Skyline	Honolulu DTS	Honolulu	614,800	3,700	10.8 mi (17.4 km)	343	2023[31]	9[31]	1[31]

See also

• List of metro systems
• List of North American rapid transit systems by ridership
• List of tram and light rail transit systems
• List of suburban and commuter rail systems
• List of United States light rail systems by ridership
• List of North American light rail systems by ridership
• List of United States commuter rail systems by ridership
• List of United States local bus agencies by ridership

Notes

1. Agency is a subsidiary of the Metropolitan Transportation Authority.
2. System also includes the Green Line and Mattapan Line light rail lines; ridership data for these light rail lines is not included in statistics shown here.
3. System also includes light rail lines. Ridership data for such lines is not included in statistics given.
4. Figures only include BART's five rapid transit lines, and not the system's AGT line to Oakland Airport nor the eBART line.
5. This is the Average Daily Ridership not Average Weekday Ridership.