Original Owners
| Railroad | Quantity | Numbers | Notes |
|---|---|---|---|
| General Electric (XP-24 testbed) | 2 | 751–752 | |
| General Electric (demonstrator) | 4 | 753–756 | High short hood; to Frisco 804–807 |
| 4 | 2501–2504 | to Union Pacific 633–636 | |
| Atchison, Topeka and Santa Fe Railway | 16 | 1600–1615 | renumbered 6600–6615 |
| Chesapeake and Ohio Railway | 38 | 2500–2537 | renumbered 8100–8137 |
| Chicago, Burlington and Quincy Railroad | 6 | 100–105 | to Burlington Northern 5424–5429 |
| Chicago, Milwaukee, St. Paul and Pacific Railroad ("Milwaukee Road") | 12 | 380–391 | 380 retired 1966; remainder renumbered 5000–5010; renumbered 5050–5060 |
| Chicago, Rock Island and Pacific Railroad | 39 | 200–238 | 225–238 to Maine Central Railroad 225–238 |
| Erie Lackawanna Railroad | 27 | 2501–2527 | to Conrail 2570–2596 |
| Great Northern Railway | 24 | 2500–2523 | to Burlington Northern 5400–5423 |
| Louisville and Nashville Railroad | 27 | 1600–1626 | |
| New York Central Railroad | 70 | 2500–2569 | to Penn Central 2500–2569; to Conrail 2500–2569 |
| New York, New Haven and Hartford Railroad | 26 | 2500–2525 | to Penn Central 2660–2685; to Conrail 2660–2685 |
| Norfolk and Western Railway | 1 | 3515 | renumbered 8138 |
| Pennsylvania Railroad | 59 | 2500–2548, 2649–2658 | renumbered 2600–2658; to Penn Central 2600–2658; to Conrail 2600–2658 |
| St. Louis – San Francisco Railway ("Frisco") | 28 | 800–803, 808–831 | 804–807 ex GE. Numbers 800–807 were high short hood units in black and yellow scheme; The next set (808–815) were low short hood units in black and yellow. The last 16, 816-831, were low hoods and delivered in the orange and white scheme. To Burlington Northern 5210–5233. |
| Southern Pacific Company | 68 | 7500–7567 | renumbered 6700–6767 |
| Union Pacific Railroad | 12 | 625–632, 637–640 | 633–636 ex GE demonstrators 2501-2504. The only railroad, other than the Frisco, to have high short hood U25Bs. |
| Wabash Railroad | 15 | 500–514 | to Norfolk and Western 3516–3529; renumbered 8139–8152 |
| Total | 478 |
Read more about this topic: GE U25B
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—Benjamin Harrison (1833–1901)