Currently operating light rail and streetcar systems in the United States

Arizona	Phoenix Valley Metro Rail Tempe Streetcar Tucson Sun Link
Arkansas	Little Rock Metro Streetcar Fort Smith Trolley
California	Los Angeles Metro Rail A, C, E, and K Lines Sprinter Sacramento RT San Diego Trolley San Francisco Muni Cable Cars E Embarcadero F Market & Wharves Muni Metro Santa Clara VTA
Colorado	Denver RTD light rail Denver Trolley Fort Collins Municipal Railway
District of Columbia	DC Streetcar
Florida	Tampa TECO Line Streetcar
Georgia	Atlanta Streetcar
Louisiana	New Orleans streetcars
Maryland	Baltimore Light RailLink
Massachusetts	Boston Mattapan Trolley MBTA Green Line Lowell Park Trolley
Michigan	Detroit QLine
Minnesota	Minneapolis-St. Paul Metro Blue Line Green Line Como-Harriet Streetcar Excelsior Streetcar Lake Superior Railroad Museum

Missouri	KC Streetcar St. Louis Loop Trolley MetroLink
New Jersey	Hudson–Bergen Light Rail Newark Light Rail River Line
New York	Buffalo Metro Rail
North Carolina	Charlotte Lynx Blue Line CityLynx Gold Line
Ohio	Connector (Cincinnati) Cleveland RTA Blue, Green, and Waterfront Lines
Oklahoma	Oklahoma City Streetcar El Reno Heritage Express
Oregon	Portland MAX Light Rail Portland Streetcar Willamette Shore Trolley Astoria Riverfront Trolley
Pennsylvania	Philadelphia SEPTA Routes 15, 101, and 102 Subway–Surface Lines Pittsburgh Light Rail
Tennessee	Memphis MATA Trolley
Texas	Dallas DART Light Rail Dallas Streetcar M-Line El Paso Streetcar Houston METRORail Galveston Island Trolley
Utah	Salt Lake City TRAX S Line
Virginia	Norfolk The Tide
Washington	Seattle 1 Line Seattle Streetcar T Line Issaquah Valley Trolley
Wisconsin	Milwaukee The Hop Kenosha Transit

Italics denote non-transit streetcar lines, operating only on limited dates and usually not year-round, for tourism or educational purposes.

Other transit in the United States: