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 | Avg. ridership weekdays, Q3 2025 | System length | Avg. boardings per mile weekdays, Q3 2025 | Opened | Stations | Lines | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | New York City Subway | NYCTA | New York City | 2,040,132,000 | 7,353,300 | 248 mi (399 km) | 29,650 | 1904 | 472 | 36 |
| 2 | Washington Metro | WMATA | Washington, DC metropolitan area | 166,654,000 | 461,100 | 129 mi (208 km) | 3,574 | 1976 | 98 | 6 |
| 3 | Chicago "L" | CTA | Chicago | 127,463,400 | 454,300 | 102.8 mi (165.4 km) | 4,419 | 1892 | 146 | 8 |
| 4 | MBTA subway ("the T") (Blue, Orange, and Red lines) | MBTA | Boston | 84,251,600 | 328,100 | 38 mi (61 km) | 8,634 | 1901 | 53 | 3 |
| 5 | PATH | PANYNJ | Manhattan, Hudson County, Newark | 62,489,400 | 216,000 | 13.8 mi (22.2 km) | 15,652 | 1908 | 13 | 4 |
| 6 | SEPTA Metro (L, B, and M) | SEPTA | Philadelphia | 59,009,800 | 219,000 | 36.7 mi (59.1 km) | 5,967 | 1907 | 75 | 3 |
| 7 | Bay Area Rapid Transit (BART) | BART | San Francisco Bay Area | 49,075,000 | 173,900 | 131.4 mi (211.5 km) | 1,460 | 1972 | 50 | 7 |
| 8 | MARTA rail | MARTA | Atlanta | 29,416,400 | 99,400 | 47.6 mi (76.6 km) | 2,088 | 1979 | 38 | 4 |
| 9 | Metro Rail (B and D lines) | LACMTA | Los Angeles | 22,471,200 | 60,800 | 17.4 mi (28.0 km) | 3,494 | 1993 | 16 | 2 |
| 10 | Metrorail | Miami-Dade Transit | Miami | 14,911,300 | 49,700 | 24.4 mi (39.3 km) | 2,037 | 1984 | 23 | 2 |
| 11 | PATCO Speedline | PATCO | Philadelphia, Camden County | 5,640,600 | 19,600 | 14.2 mi (22.9 km) | 1,380 | 1936 | 14 | 1 |
| 12 | Baltimore Metro SubwayLink | MTA | Baltimore | 5,487,000 | 15,000 | 15.5 mi (24.9 km) | 970 | 1983 | 14 | 1 |
| 13 | Staten Island Railway | SIRTOA | Staten Island | 4,743,000 | 18,100 | 14 mi (23 km) | 1,293 | 1860 | 21 | 1 |
| 14 | Tren Urbano | ATI | San Juan | 4,438,400 | 21,100 | 10.7 mi (17.2 km) | 1,972 | 2004 | 16 | 1 |
| 15 | RTA Rapid Transit (Red Line) | GCRTA | Cleveland | 3,151,500 | 7,200 | 19 mi (31 km) | 379 | 1955 | 18 | 1 |
| 16 | Skyline | Honolulu DTS | Honolulu | 1,151,000 | 3,900 | 16.1 mi (25.9 km) | 242 | 2023 | 13 | 1 |
Locations Map
| Locations of Rapid Transit Systems in the United States |
|---|
Los Angeles Metro Rail Chicago "L" PATH MARTA rail SEPTA Metro PATCO Speedline Washington Metro MBTA subway SIR BART Miami Metrorail Baltimore SubwayLink class=notpageimage| Mainland United States |
| Insular United States |
Skyline class=notpageimage| HawaiiTren Urbano class=notpageimage| Puerto Rico |
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
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