# List of rail transit systems in the United States

This is a list of the operating passenger rail transit systems in the United States. This list does not include intercity rail services such as the Alaska Railroad or Amtrak and its state-sponsored subsidiaries. "Region" refers to the metropolitan area based around the city listed, where applicable.

## Operating

| Region | State | System | Authority | Type (FTA) |
| Albuquerque | New Mexico | Rail Runner Express | Mid-Region Council of Governments | Commuter rail |
| Atlanta | Georgia | MARTA rail | MARTA | Heavy rail |
| Atlanta | Georgia | Atlanta Streetcar | MARTA | Streetcar |
| Austin | Texas | Capital MetroRail | CapMetro | Commuter rail |
| Baltimore | Maryland | Metro SubwayLink | Maryland Transit Administration | Heavy rail |
| Baltimore | Maryland | Light RailLink | Maryland Transit Administration | Light rail |
| Boston area | Massachusetts, Rhode Island | MBTA Commuter Rail | MBTA | Commuter rail |
| Boston | Massachusetts | MBTA subway | MBTA | Heavy rail |
| Boston | Massachusetts | MBTA subway | MBTA | Light rail |
| Boston | Massachusetts | MBTA subway | MBTA | Heritage light rail |
| Buffalo | New York | Metro Rail | NFTA | Light rail |
| Camden and Trenton | New Jersey | River Line | New Jersey Transit | Tram-train |
| Charlotte | North Carolina | LYNX Rapid Transit Services | Charlotte Area Transit System | Light rail |
| Charlotte | North Carolina | LYNX Rapid Transit Services | Charlotte Area Transit System | Streetcar |
| Chicago | Illinois, Indiana | South Shore Line | NICTD | Commuter rail |
| Chicago | Illinois | The "L" | Chicago Transit Authority | Heavy rail |
| Chicago | Illinois | Airport Transit System | Chicago Airport Authority | VAL |
| Chicago | Illinois, Wisconsin | Metra | Northeast Illinois RCRC | Commuter rail |
| Cincinnati | Ohio | Connector | SORTA (operation contracted to Transdev) | Streetcar |
| Cleveland | Ohio | RTA Rapid Transit | GCRTA | Heavy rail |
| Cleveland | Ohio | RTA Rapid Transit | GCRTA | Light rail |
| Dallas–Fort Worth | Texas | Trinity Railway Express | Dallas Area Rapid Transit | Commuter rail |
| Dallas–Fort Worth | Texas | Trinity Railway Express | Trinity Metro | Commuter rail |
| Dallas–Fort Worth | Texas | DART light rail | Dallas Area Rapid Transit | Light rail |
| Dallas–Fort Worth | Texas | Dallas Streetcar | City of Dallas (operation contracted to DART) | Streetcar |
| Dallas–Fort Worth | Texas | M-Line Trolley | McKinney Avenue Transit Authority | Heritage streetcar |
| Dallas–Fort Worth | Texas | Skylink | Dallas/Fort Worth International Airport | People mover |
| Dallas–Fort Worth | Texas | A-Train | DCTA | Commuter rail |
| Dallas–Fort Worth | Texas | TEXRail | Trinity Metro | Commuter rail |
| Denver | Colorado | RTD Rail | Regional Transportation District | Commuter Rail |
| Denver | Colorado | RTD Rail | Regional Transportation District | Light rail |
| Detroit | Michigan | QLine | M-1 Rail | Streetcar |
| Detroit | Michigan | Detroit People Mover | Detroit Transportation Corporation | Automated people mover |
| El Paso | Texas | El Paso Streetcar | Sun Metro | Heritage streetcar |
| Galveston | Texas | Galveston Island Trolley | Island Transit | Heritage streetcar |
| Hartford | Connecticut | Hartford Line | Connecticut Department of Transportation | Commuter rail |
| Honolulu | Hawaii | Skyline | Honolulu Department of Transportation Services | Light metro |
| Houston | Texas | METRORail | Metropolitan Transit Authority of Harris County | Light rail |
| Jacksonville | Florida | Skyway | Jacksonville Transportation Authority | Automated people mover |
| Jersey City/Hudson County | New Jersey | Hudson–Bergen Light Rail | New Jersey Transit | Light rail |
| Kansas City | Missouri | KC Streetcar | Kansas City Streetcar Authority (operation contracted to Herzog Transit Services) | Streetcar |
| Kenosha | Wisconsin | Kenosha Streetcars | Kenosha Transit | Streetcar |
| Las Vegas | Nevada | Las Vegas Monorail | Las Vegas Monorail Company | Monorail |
| Little Rock | Arkansas | Metro Streetcar | Rock Region Metro | Heritage streetcar |
| Los Angeles | California | Metro Rail | LACMTA | Heavy rail |
| Los Angeles | California | Metro Rail | LACMTA | Light rail |
| Memphis | Tennessee | MATA Trolley | Memphis Area Transit Authority | Heritage streetcar |
| Miami | Florida | Tri-Rail | SFRTA | Commuter rail |
| Miami | Florida | Metrorail | Miami-Dade Transit | Heavy rail |
| Miami | Florida | Metromover | Miami-Dade Transit | Automated guideway transit |
| Milwaukee | Wisconsin | The Hop | City of Milwaukee (operation contracted to Transdev) | Streetcar |
| Minneapolis–Saint Paul | Minnesota | Metro | Metro Transit | Light rail |
| Minneapolis–Saint Paul | Minnesota | Northstar Line | Metro Transit | Commuter rail |
| Morgantown | West Virginia | Morgantown Personal Rapid Transit | West Virginia University | People mover |
| Nashville | Tennessee | WeGo Star | Regional Transportation Authority | Commuter rail |
| New Haven | Connecticut | Shore Line East | Connecticut Department of Transportation | Commuter rail |
| New Orleans | Louisiana | New Orleans Streetcars | New Orleans RTA | Heritage streetcar |
| New York | New York | Long Island Rail Road | Metropolitan Transportation Authority | Commuter rail |
| New York | New York, Connecticut | Metro-North Railroad | Metropolitan Transportation Authority | Commuter rail |
| New York | New York | New York City Subway | Metropolitan Transportation Authority | Heavy rail |
| New York | New York | Staten Island Railway | SIRTOA | Heavy rail |
| New York | New York, New Jersey | PATH | PANYNJ | Heavy rail |
| New York | New York | AirTrain JFK | PANYNJ | Automated light rail |
| New York | New York, New Jersey, Pennsylvania | NJ Transit Rail Operations | New Jersey Transit | Commuter rail |
| Newark | New Jersey | Newark Light Rail | New Jersey Transit | Light rail |
| Newark | New Jersey | AirTrain Newark | PANYNJ | Monorail |
| Norfolk | Virginia | Tide Light Rail | Hampton Roads Transit | Light rail |
| Oakland | California | Oakland Airport Connector | Bay Area Rapid Transit District | Automated guideway transit |
| Oceanside | California | Sprinter | North County Transit District | Diesel light rail |
| Oklahoma City | Oklahoma | Oklahoma City Streetcar | City of Oklahoma City (operation contracted to Herzog Transit Services) | Streetcar |
| Orlando Metro Area | Florida | SunRail | Central Florida | Commuter rail |
| Philadelphia | Pennsylvania, New Jersey | PATCO Speedline | PATCO | Heavy rail |
| Philadelphia | Pennsylvania, New Jersey, Delaware | SEPTA Regional Rail | SEPTA | Commuter rail |
| Philadelphia | Pennsylvania | SEPTA Metro | SEPTA | Heavy rail |
| Philadelphia | Pennsylvania | SEPTA Metro | SEPTA | Light rail |
| Philadelphia | Pennsylvania | SEPTA Metro | SEPTA | Heritage streetcar |
| Phoenix metro area | Arizona | Valley Metro Rail | Valley Metro | Light rail |
| Phoenix metro area | Arizona | Tempe Streetcar | Valley Metro | Streetcar |
| Phoenix metro area | Arizona | PHX Sky Train | City of Phoenix | People mover |
| Pittsburgh | Pennsylvania | The T | Pittsburgh Regional Transit | Light rail |
| Portland metro area | Oregon | WES Commuter Rail | TriMet | Commuter rail |
| Portland | Oregon | MAX | TriMet | Light rail |
| Portland | Oregon | Portland Streetcar | Portland Streetcar, Inc. | Streetcar |
| Sacramento | California | SacRT light rail | Sacramento Regional Transit District | Light rail |
| St. Louis | Missouri, Illinois | MetroLink | Bi-State Development Agency | Light rail |
| St. Louis | Missouri | Loop Trolley | Bi-State Development Agency | Heritage streetcar |
| Salt Lake City metro area | Utah | FrontRunner | Utah Transit Authority | Commuter rail |
| Salt Lake City metro area | Utah | Streetcar | Utah Transit Authority | Streetcar |
| Salt Lake City metro area | Utah | TRAX | Utah Transit Authority | Light rail |
| San Bernardino | California | Arrow | Southern California Regional Rail Authority | Commuter rail |
| San Diego | California | Coaster | North County Transit District | Commuter rail |
| San Diego | California | San Diego Trolley | San Diego MTS | Light rail |
| San Diego | California | San Diego Trolley (Silver Line) | San Diego MTS | Heritage streetcar |
| San Francisco Bay Area | California | Bay Area Rapid Transit | Bay Area Rapid Transit District | Heavy rail |
| San Francisco Bay Area | California | Bay Area Rapid Transit | Bay Area Rapid Transit District | Diesel light rail |
| San Francisco | California | Muni Metro | San Francisco MTA | Light rail |
| San Francisco | California | Muni heritage streetcars (E & F) | San Francisco MTA | Heritage streetcar |
| San Francisco | California | Cable car system | San Francisco MTA | Heritage cable car |
| San Francisco | California | AirTrain | San Francisco International Airport | People mover |
| San Jose | California | Altamont Corridor Express | San Joaquin Regional Rail Commission | Commuter rail |
| San Jose | California | VTA light rail | Santa Clara VTA | Light rail |
| San Jose | California | Caltrain | Peninsula Corridor Joint Powers Board | Commuter rail |
| San Juan | Puerto Rico | Tren Urbano | DTOP | Heavy rail |
| Seattle/Tacoma | Washington | Sounder | Sound Transit | Commuter rail |
| Seattle | Washington | Link light rail | Sound Transit (operation contracted to King County Metro) | Light rail |
| Seattle | Washington | Seattle Center Monorail | City of Seattle | Monorail |
| Seattle | Washington | Seattle Streetcar | City of Seattle (operation contracted to King County Metro) | Streetcar |
| Sonoma / Marin | California | Sonoma–Marin Area Rail Transit | Sonoma–Marin Area Rail Transit District | Commuter rail |
| Southern California | California | Metrolink | Southern California Regional Rail Authority | Commuter rail |
| Tacoma | Washington | Link light rail | Sound Transit | Light rail |
| Tampa | Florida | TECO Line Streetcar | Hillsborough Area Regional Transit Authority | Heritage streetcar |
| Tucson | Arizona | Sun Link | City of Tucson (operation contracted to RATP) | Streetcar |
| Washington, D.C. | DC, Maryland, West Virginia | MARC Train | Maryland Transit Administration | Commuter rail |
| Washington, D.C. | DC, Virginia | Virginia Railway Express | Virginia Railway Express | Commuter rail |
| Washington, D.C. | DC, Maryland, Virginia | Metrorail | WMATA | Heavy rail |
| Washington, D.C. | DC | DC Streetcar | DDOT (operation contracted to RATP) | Streetcar |
* ↑ While this system is located entirely within unincorporated San Mateo County, it serves the San Francisco International Airport, which is owned and managed by the City and County of San Francisco

## Under construction

| Region | State | System | Authority | Type (FTA) | Opening |
| Orange County | California | OC Streetcar | Orange County Transportation Authority | Streetcar | 2025 |
| Dallas | Texas | Silver Line | Dallas Area Rapid Transit | Commuter rail | 2025 |
| Prince George's County and Montgomery County | Maryland | Purple Line | Maryland Transit Administration | Light rail | 2026 |
| Omaha | Nebraska | Omaha Streetcar | City of Omaha, Nebraska | Streetcar | 2027 |