| State/territory |
Railway |
| Alabama |
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| Arizona |
|
| Arkansas |
|
| California |
|
| Colorado |
|
| Connecticut |
|
| Florida |
|
| Georgia |
|
| Hawaii |
|
| Illinois |
|
| Indiana |
- Hesston Steam Museum (dual-gauge lines with 3 ft (914 mm) gauge track also present) (separate 14 in (356 mm) gauge railway and separate 7+1⁄2 in (190.5 mm) gauge railway also present) (operating)
|
| Kentucky |
|
| Louisiana |
|
| Maine |
|
| Massachusetts |
|
| Michigan |
- Tauber Family Railroad (located in Detroit Zoo) (operating)
- Toonerville Trolley[2] in Soo Junction (operating)
- Liberty Farms & Neo Wilson Railway (currently under construction)
|
| Minnesota |
- Lake Region Threshers Show Dalton MN (600 mm / 1 ft 11+5⁄8 in gauge) (operating)[3]
|
| Missouri |
|
| Nebraska |
|
| Nevada |
|
| New Hampshire |
|
| New Jersey |
|
| New Mexico |
|
| New York |
|
| North Carolina |
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| Ohio |
- J&L Narrow Gauge Railroad[7] (located in Youngstown Steel Heritage) (operating)
|
| Oregon |
|
| Pennsylvania |
|
| Texas |
|
| Utah |
- Bingham Central Railway (defunct)[10]
- S&S Shortline Railroad Park & Museum[11] (separate 7+1⁄2 in (190.5 mm) gauge railway also present) (operating)
- Wild Kingdom Train (located in Lagoon) (separate 2 ft (610 mm) gauge railway named Pioneer Village Railroad and two separate 12 in (305 mm) gauge railways, the more recent one being named Lagoon Miniature Railway, previously present) (operating)
|
| Virginia |
|
| Washington |
|