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, Q1 2025 [2] | System length | Avg. boardings per mile weekdays, Q1 2025 | Opened | Stations | Lines | |
---|---|---|---|---|---|---|---|---|---|---|
1 | New York City Subway | NYCTA [note 1] | New York City | 2,040,132,000 | 7,008,000 | 248 mi (399 km) [3] | 28,258 | 1904 [4] | 472 [4] | 26 [4] |
2 | Washington Metro | WMATA | Washington metropolitan area | 166,654,000 | 559,400 | 129 mi (208 km) [5] | 4,336 | 1976 [5] | 98 [5] | 6 |
3 | Chicago "L" | CTA | Chicago | 127,463,400 | 360,100 | 102.8 mi (165.4 km) [6] | 3,503 | 1892 [6] | 146 [6] | 8 [6] |
4 | MBTA subway ("the T") [note 2] (Blue, Orange, and Red lines) | MBTA | Boston | 84,251,600 | 291,400 | 38 mi (61 km) [7] | 7,668 | 1901 | 53 [7] | 3 [7] |
5 | PATH | PANYNJ | Manhattan, Hudson County, Newark | 62,489,400 | 197,300 | 13.8 mi (22.2 km) [8] [9] | 14,297 | 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 | 162,100 | 131.4 mi (211.5 km) [16] | 1,361 | 1972 [17] | 50 [16] | 7 [18] |
8 | MARTA rail | MARTA | Atlanta | 29,416,400 | 87,100 | 47.6 mi (76.6 km) | 1,830 | 1979 [19] | 38 [20] | 4 [20] |
9 | Metro Rail [note 3] (B and D lines) | LACMTA | Los Angeles | 22,471,200 | 64,000 | 17.4 mi (28.0 km) [21] | 3,678 | 1993 [21] | 16 [21] | 2 [21] |
10 | Metrorail | Miami-Dade Transit | Miami | 14,911,300 | 53,200 | 24.4 mi (39.3 km) [22] | 2,180 | 1984 [23] | 23 [22] | 2 [22] |
11 | PATCO Speedline | PATCO | Philadelphia, Camden County | 5,640,600 | 18,300 | 14.2 mi (22.9 km) [24] | 1,289 | 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 | 17,700 | 14 mi (23 km) [3] | 1,264 | 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 | 9,300 | 19 mi (31 km) [29] | 489 | 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] |
Locations of Rapid Transit Systems in the United States |
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Insular United States |