| System | Largest city served |
Annual ridership (2019) |
Avg. daily weekday boardings (Q4 2019) |
System length |
Avg. daily boardings per mile (Q4 2019) |
Year opened |
Stations | Lines | Year last expanded |
|
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Metro Rail light rail: A, C, E & L Lines |
Los Angeles | 51,395,800 | 161,300 | 83.6 miles (134.5 km) | 1,929 | 1990 | 80 | 4 | 2016 |
| 2 | Muni Metro [note 1] (incl. E Embarcadero [note 2] & F Market [note 2]) |
San Francisco | 49,519,600 | 157,700 | 35.7 miles (57.5 km) | 4,417 | 1912; 1980 |
152 | 9 | 2015 |
| 3 | MBTA light rail: [note 1] Green Line & Ashmont–Mattapan High Speed Line |
Boston | 47,161,500 | 137,700 | 26 miles (42 km) | 5,296 | 1897; 1929 |
74 | 5 | 2004; n/a |
| 4 | MAX Light Rail [note 3] | Portland | 38,388,200 | 119,600 | 60 miles (97 km) | 1,993 | 1986 | 97 | 5 | 2015 |
| 5 | San Diego Trolley [note 3] (incl. Silver Line [note 2]) | San Diego | 38,047,300 | 117,700 | 53.5 miles (86.1 km) | 2,200 | 1981 | 53 | 4 | 2005 |
| 6 | DAR [note 3] | Dallas | 28,069,000 | 92,000 | 93 miles (150 km) | 989 | 1996 | 64 | 4 | 2016 |
| 7 | Central Link [note 3] | Seattle | 25,217,855 | 79,113 | 20.4 miles (32.8 km) | 3,878 | 2009 | 16 | 1 | 2016 |
| 8 | Denver RTD : [note 3] C, D, E, F, H, R, W, and L | Denver | 24,585,300 | 95,300 | 58.5 miles (94.1 km) | 1,629 | 1994 | 62 | 8 | 2019 |
| 9 | SEPTA light rail: [note 1] Subway–Surface Lines, Suburban Trolley Lines & Girard Ave Trolley [note 2] | Philadelphia | 24,321,200 | 66,633 [note 4] | 68.4 miles (110.1 km) | 974 | 1906 | >100 | 8 | 2005 |
| 10 | METRO Light Rail [note 3] | Minneapolis -St. Paul | 24,299,400 | 75,300 | 21.8 miles (35.1 km) | 3,454 | 2004 | 37 | 2 | 2014 |
| 11 | METRORail | Houston | 18,409,100 | 60,300 | 23.8 miles (38.3 km) | 2,533 | 2004 | 44 | 3 | 2017 |
| 12 | TRAX (UTA) andS Line [note 3] | Salt Lake City | 16,871,800 | 56,900 | 46.8 miles (75.3 km) | 1,216 | 1999 | 56 | 4 | 2013 |
| 13 | Hudson–Bergen Light Rail [note 1] |
Jersey City | 15,500,000 | 42,466 | 17 miles (27 km) | 2,498 | 2000 | 24 | 3 | 2011 |
| 14 | Valley Metro Rail | Phoenix | 15,060,200 | 47,000 | 28.2 miles (45.4 km) | 1,667 | 2008 | 35 | 1 | 2019 |
| 15 | MetroLink | St. Louis | 13,088,000 | 38,900 | 46 miles (74 km) | 846 | 1993 | 37 | 2 | 2006 |
| 16 | Sacramento RT Light Rail | Sacramento | 11,180,100 | 38,400 | 42.9 miles (69.0 km) | 895 | 1987 | 53 | 3 | 2015 |
| 17 | Charlotte Area Transit System : Blue and Gold Lines |
Charlotte | 8,892,100 | 29,900 | 20.8 miles (33.5 km) | 1,438 | 2007 | 31 | 2 | 2018 |
| 18 | Santa Clara VTA Light Rail [note 3] |
San Jose | 8,335,100 | 26,700 | 42.2 miles (67.9 km) | 632 | 1987 | 62 | 3 | 2005 |
| 19 | The T: Pittsburgh Light Rail |
Pittsburgh | 7,364,300 | 20,176 [note 4] | 26.2 miles (42.2 km) | 770 | 1984 [note 5] | 53 | 2 | 2012 |
| 20 | Baltimore Light Rail [note 1] | Baltimore | 6,508,700 | 25,300 | 33 miles (53 km) | 767 | 1992 | 33 | 3 | 1997 |
| 21 | San Francisco cable car system [note 2] [note 6] |
San Francisco | 5,719,900 | 14,900 | 5.2 miles (8.4 km) | 2,865 | 1878 | streetcar-like surface stops | 3 | 1952 |
| 22 | Newark Light Rail | Newark | 5,500,000 | 15,068 [note 4] | 6.2 miles (10.0 km) | 2,430 | 1935 | 16 | 2 | 2006 |
| 23 | RTA Streetcars in New Orleans [note 2] |
New Orleans | 5,289,400 | 15,600 | 26.9 miles (43.3 km) | 579 | 1835 | streetcar-like surface stops | 5 | 2018 |
| 24 | Portland Streetcar [note 7] | Portland | 5,241,162 | 12,619 [note 8] | 7.35 miles (11.83 km) | 1,717 | 2001 | 76 | 2 | 2015 |
| 25 | Buffalo Metro Rail | Buffalo | 4,394,000 | 15,100 | 6.4 miles (10.3 km) | 2,359 | 1984 | 14 | 1 | n/a |
| 26 | River LINE [note 1] | Trenton – Camden |
2,700,000 | 7,397 [note 4] | 34 miles (55 km) | 218 | 2004 | 20 | 1 | 2013 |
| 27 | SPRINTER [note 3] | Oceanside – Escondido |
2,475,800 | 7,800 | 22 miles (35 km) | 354 | 2008 | 15 | 1 | n/a |
| 28 | KC Streetcar | Kansas City | 2,228,942 | 6,107 [note 4] | 2.2 miles (3.5 km) | 2,776 | 2016 | 16 | 1 | 2016 |
| 29 | Seattle Streetcar [note 3] | Seattle | 1,863,400 | 6,000 | 3.8 miles (6.1 km) | 1,579 | 2007 | 21 | 2 | 2016 |
| 30 | RTA Rapid Transit : [note 9] Blue Green, and Waterfront Lines | Cleveland | 1,477,700 | 3,900 | 15.3 miles (24.6 km) | 255 | 1913 | 34 | 2 | 1996 |
| 31 | Tide Light Rail | Norfolk | 1,345,100 | 4,200 | 7.4 miles (11.9 km) | 568 | 2011 | 11 | 1 | n/a |
| 32 | Q-Line | Detroit | 1,200,000 | 3,288 [note 4] | 3.3 miles (5.3 km) | 996 | 2017 | 20 | 1 | n/a |
| 33 | DC Streetcar | Washington, D.C. | 1,093,400 | 2,400 | 2.4 miles (3.9 km) | 1,000 | 2016 | 8 | 1 | n/a |
| 34 | Tacoma Link [note 3] | Tacoma | 909,429 | 2,990 | 1.6 miles (2.6 km) | 1,869 | 2003 | 5 | 1 | n/a |
| 35 | TECO Line Streetcars [note 2] | Tampa | 902,700 | 2,400 | 2.7 miles (4.3 km) | 889 | 2002 | 11 | 1 | 2010 |
| 36 | Sun Link | Tucson | 873,100 | 3,100 | 3.9 miles (6.3 km) | 795 | 2014 | 22 | 1 | n/a |
| 37 | Cincinnati Bell Connector | Cincinnati | 530,757 | 1,454 [note 4] | 3.6 miles (5.8 km) | 404 | 2016 | 18 | 1 | n/a |
| 38 | MATA Trolley | Memphis | 302,000 [note 10] | 900 | 2 miles (3.2 km) | 450 | 1993 | 11 | 1 | 2004 |
| 39 | El Paso Streetcar | El Paso | 271,900 | 1,600 | 4.8 miles (7.7 km) | 333 | 2018 | 27 | 2 | n/a |
| 40 | Atlanta Streetcar | Atlanta | 255,600 | 700 [note 4] | 2.7 miles (4.3 km) | 259 | 2014 | 12 | 1 | n/a |
| 41 | Dallas Streetcar | Dallas | 158,000 | 600 | 2.45 miles (3.94 km) | 245 | 2015 | 6 | 1 | 2016 |
