| No. | Class | F.M. Whyte | Gauge | Railroad Line | Location | Status | Builder Info | Notes |
|---|---|---|---|---|---|---|---|---|
| 440 | C-57 | 2-8-0 | 4'-8½" | C&NW (UP) | Langlade County Historical Society, Antigo, WI | display | Baldwin #18345, 1900 | From North Freedom, WI. |
| 2295 | MK-9 | 2-8-2 | 4'-8½" | UP | Boise Depot, Boise, ID | display | Alco (Brooks) #61924, 1924 | Appeared in UP's film Last of the Giants. |
| 264 (6264) | C-2 | 2-8-0 | 4'-8½" | UP | Nevada State Railroad Museum, Boulder City, NV | display | Baldwin #30026, 1907 | Underwent a cosmetic restoration in 2005. |
| 1242 | T-57 | 4-6-0 | 4'-8½" | UP | Lions Park, Cheyenne, WY | display | Cooke Locomotive & Machine Works #2053, 1890 | |
| 838 | FEF-3 | 4-8-4 | 4'-8½" | UP | UP engine house, Cheyenne, WY | stored | Alco (Schenectady) #72785, 1944 | Used as a spare parts source for UP 844. |
| 844 (8444) | FEF-3 | 4-8-4 | 4'-8½" | UP | UP engine house, Cheyenne, WY | operational | Alco (Schenectady) #72791, 12/1944 | Featured in the TV series 'Shining Time Station'. Only steam locomotive in the United States to never be retired by a major class I North American railroad. Renumbered to 8444 from 1962 to 1989. Taken out of service in 2013. Returned to service in 2016. |
| 4014 | 48841 | 4-8-8-4 | 4'-8½" | UP | UP engine house, Cheyenne, WY | operational | Alco (Schenectady) #69585, 11/1941 | From Pomona, CA. Reacquired by the Union Pacific in July 2013. Restored to operation on May 1, 2019. Converted to burn oil. Temporarily uses the tender of UP 3985. Became the first-ever steam locomotive to be equipped with Positive Train Control. |
| 4004 | 48841 | 4-8-8-4 | 4'-8½" | UP | US 30, Holliday Park, Cheyenne, WY | display | Alco (Schenectady) #69575, 09/1941 | Cosmetically restored in 2018. |
| 561 | C-2 | 2-8-0 | 4'-8½" | UP | Pawnee Park, Columbus, NE | display | Baldwin (Burnham) #23592, 1904 | |
| 814 | FEF-1 | 4-8-4 | 4'-8½" | UP | Rock Island Depot Museum, Main & 16th, Council Bluffs, IA | display | Alco (Schenectady) #68822, 1937 | |
| 4005 | 48841 | 4-8-8-4 | 4'-8½" | UP | Forney Transportation Museum, Denver, CO | display | Alco (Schenectady) #69576, 10/1941 | First UP Big Boy to be converted to burn oil before UP 4014. Converted back to burn coal in March 1948. Only UP Big Boy to be involved in an accident. |
| 900005 (5500) | TTT-6 | 2-10-2 | 4'-8½" | UP (Los Angeles & Salt Lake) | Idaho Northern & Pacific yard, Emmett, ID | stored | Baldwin #56772, 07/1923 | Tender only. Repurposed as snow plow 900005. Engine retired 11/1949. |
| 4420 (1271) | 0-6-0 | 4'-8½" | UP | UP Roundhouse, Evanston, WY | restoration | Lima #1414, 1914 | Moved to the Evanston Roundhouse in December 2020. Restoration to operation is planned. | |
| 421 | C-57 | 2-8-0 | 4'-8½" | UP | Fairbury City Park, Fairbury, NE | display | Baldwin (Burnham) #18200, 1900 | |
| 6072 | C-2 | 2-8-0 | 4'-8½" | UP | Wyman Park, Fort Riley, KS | display | Alco (Brooks) #44648, 1907 | Converted from coal to oil. A base pass is required to view this locomotive. |
| 4018 | 48841 | 4-8-8-4 | 4'-8½" | UP | Museum of the American Railroad, Frisco, TX | display | Alco (Schenectady) #69589, 01/1942 | Displayed with UP Centennial 6913. |
| 68 (2) | 25 ton | 4-4-0 | 36" | UP (Astroworld) | Brook Rother, Georgetown, CA | stored | Harpur, 1968 | Named Spitfire. Replica. From the defunct Six Flags AstroWorld, Houston, TX, then Durango, CO. Recent photos suggest this locomotive is stored in disrepair. |
| 423 | C-57 | 2-8-0 | 4'-8½" | UP | Carl Gray Park, Gering, NE | display | Baldwin (Burnham) #18262, 1900 | |
| 4455 | S-6 | 0-6-0 | 4'-8½" | UP | Colorado Railroad Museum, Golden, CO | display | Lima #5992, 1920 | |
| 437 | C-57 | 2-8-0 | 4'-8½" | UP | Stuhr Museum, Grand Island, NE | display | Baldwin (Burnham) #18413, 1901 | |
| 4017 | 48841 | 4-8-8-4 | 4'-8½" | UP | National Railroad Museum, Green Bay, WI | display | Alco (Schenectady) #69588, 01/1942 | Displayed with PPR GG1 4890. |
| 3673 (2041) | Y-7 | 2-8-8-2 | 4'-8½" | UP (N&W) | park, Hanna, WY | display | Alco (Schenectady) #61109, 05/1919 | Repurposed into maintenance tender. Sold to the Laramie, North Park & Western in 1947. To the UP in 1951. |
| 237 (6237) | C-2 | 2-8-0 | 4'-8½" | UP | Hastings Museum, Hastings, NE | display | Baldwin (Burnham) #28910, 08/1906 | |
| 618 | C-2 | 2-8-0 | 4'-8½" | Heber Valley (UP) | Heber Valley Railroad, Heber City, UT | restoration | Baldwin (Burnham) #31250, 1907 | Featured in Outlaw Trail: The Treasure of Butch Cassidy. Previously operated in late 2010. Being converted to burn oil and will use the tender from SP 2-10-2 982. Currently scheduled to return to operation sometime in 2026. |
| 4442 | 4421 | 0-6-0 | 4'-8½" | UP | Clark County Museum, Henderson, NV | display | Baldwin #48276, 1918 | |
| 481 | C-57 | 2-8-0 | 4'-8½" | UP | Trails and Rails Museum, Kearney, NE | display | Baldwin (Burnham) #21745, 1903 | |
| 900015 (5034) | TTT-4 | 2-10-2 | 4'-8½" | UP | Depot Park, Laramie, WY | display | Baldwin #53705, 09/1920 | Tender only. Repurposed as snow plow in 1955. |
| 535 (6535) | Harriman | 2-8-0 | 4'-8½" | UP | Depot Park, Laramie, WY | display | Baldwin (Burnham) #21790, 1903 | From LaBonte Park, Corpus Christi, TX. |
| 485 | C-57 | 2-8-0 | 4'-8½" | UP | Dawson Co. Museum, Lexington, NE | display | Baldwin (Burnham) #21784, 1903 | |
| 4439 | S-51 | 0-6-0 | 4'-8½" | UP | Travel Town Museum, Los Angeles, CA | display | Baldwin #48273, 1918 | |
| 460 | C-57 | 2-8-0 | 4'-8½" | UP | Pony Express Museum, Marysville, KS | display | Baldwin (Burnham) #19104, 1901 | This locomotive was chosen by the Kansas Steam Heritage Association for cosmetic restoration with a long term goal of restoring it to operation. |
| 616 | C-2 | 2-8-0 | 4'-8½" | UP | Lakeview Park, Nampa, ID | display | Baldwin (Burnham) #31248, 1907 | |
| 3504 (3604) | SA-C-2 | 2-8-8-0 | 4'-8½" | UP | Nampa Train Depot Museum, Nampa, ID | display | Alco (Schenectady) #58266, 05/1918 | Tender only. Retired in 1954 but tender repurposed for a derick train. Retired in the 1980s. Displayed with UP crane 902006. |
| 3977 | 46644 | 4-6-6-4 | 4'-8½" | UP | Cody Park, North Platte, NE | display | Alco (Schenectady) #70160, 1943 | One of only two surviving UP Challenger locomotives, the other one being UP 3985. Displayed with UP Centennial 6922. |
| 480 | C-57 | 2-8-0 | 4'-8½" | UP | North Platte Memorial Park, North Platte, NE | display | Baldwin #21718, 1903 | |
| 4457 (4436) | 4421 | 0-6-0 | 4'-8½" | UP | Utah State Railroad Museum, Ogden, UT | display | Baldwin #48200, 1918 | |
| 907827 (5510) | TTT-6 | 2-10-2 | 4'-8½" | UP (Los Angeles & Salt Lake) | Utah State Railroad Museum, Ogden, UT | display | Baldwin #56900, 08/1923 | Tender only. Engine retired 11/1949. |
| 902207 (3129) | P-10 | 4-6-2 | 4'-8½" | OSL (UP) | Utah State Railroad Museum, Ogden, UT | display | Lima #1444, 10/1914 | Tender only. |
| 833 | FEF-2 | 4-8-4 | 4'-8½" | UP | Utah State Railroad Museum, Ogden, UT | display | Alco (Schenectady) #69174, 1939 | From Pioneer Park, Salt Lake City, UT. Displayed with UP Centennial 6916. |
| 1243 | T-57 | 4-6-0 | 4'-8½" | UP | Durham Western Heritage Museum, Omaha, NE | display | Cooke Locomotive & Machine Works #2054, 10/1890 | Appeared in Last of the Giants. |
| 119 | 4-4-0 | 30" | UP | Henry Doorly Zoo, Omaha, NE | operational | Crown Metal Products (Elizabeth), 1968 | Built to resemble UP 119. | |
| 4023 | 48842 | 4-8-8-4 | 4'-8½" | UP | Lauritzen Gardens, Omaha, NE | display | Alco (Schenectady) #72780, 11/1944 | Displayed with UP Centennial 6900. Repainted in 2025. |
| 2564 | MK-10 | 2-8-2 | 4'-8½" | UP | Southern California Railway Museum, Perris, CA | display | Alco (Brooks) #62881, 1921 | |
| 2005 | MK-1 | 2-8-2 | 4'-8½" | UP | Ross Park, Pocatello, ID | display | Baldwin #36367, 1911 | Displayed with UP Centennial 6901. |
| 9000 | 9000 | 4-12-2 | 4'-8½" | UP | RailGiants Train Museum, Pomona, CA | display | Alco (Brooks) #66544, 1926 | Three cylinder. Displayed with UP Centennial 6915 and SD40-2C 3105. Only surviving 4-12-2 type steam locomotive in the US. |
| 197 (3203) | P-2 | 4-6-2 | 4'-8½" | OR&N (UP) | Oregon Rail Heritage Center, Portland, OR | restoration | Baldwin #25717, 1905 | new cab Restoration to operational condition planned. Will be renumbered from OR&N 197 to UP 3203. |
| 900002 (3562) | SA-C-6 | 2-8-8-0 | 4'-8½" | UP | Western Pacific Railroad Museum, Portola, CA | display | Alco (Brooks) #65682, 06/1924 | Tender only. Engine retired 01/1949. |
| 119 | 4-4-0 | 4'-8½" | UP | Golden Spike Utah, Promontory Summit, UT | operational | Chadwell O'Connor, 1979 | Replica. Appeared in Great American Train Rides I. | |
| 533 | C-57 | 2-8-0 | 4'-8½" | UP | Elm St., Rawlins, WY | display | Baldwin (Burnham) #21755, 1903 | |
| 3206 | P-1 | 4-6-2 | 4'-8½" | UP (OR&N) | Inland NW Rail Museum, Reardan, WA | display | Alco (Schenectady) #30037, 1904 | From Spokane, WA. |
| 6051 | C-2 | 2-8-0 | 4'-8½" | UP | Fairmont Park, Market & Hwy 60, Riverside, CA | display | Baldwin (Burnham) #31539, 1907 | |
| 4466 | S-6 | 0-6-0 | 4'-8½" | UP | California State Railroad Museum, Sacramento, CA | display | Lima #6003, 1920 | Restored to operation in 1984. Retired from excursion service in 1999 due to California's ban on operating coal-fired steam locomotives. There are currently no plans on restoring back to operation. |
| 477 | C-57 | 2-8-0 | 4'-8½" | UP | Kenwood Park, Salina, KS | display | Baldwin (Burnham) #19292, 1901 | The Kansas Steam Heritage Association had considered performing a cosmetic restoration on this locomotive with a long term goal of restoring it to operation but chose a different locomotive instead. |
| 4012 | 48841 | 4-8-8-4 | 4'-8½" | UP | Steamtown National Historic Site, Scranton, PA | display | Alco (Schenectady) #69583, 11/1941 | Underwent a cosmetic restoration between 2019 and 2021. Displayed on a curved track in front near the parking lot. |
| 407 | C-57 | 2-8-0 | 4'-8½" | UP | Legion Park, Sidney, NE | display | Baldwin (Burnham) #17974, 1900 | |
| 5511 | TTT63 | 2-10-2 | 4'-8½" | UP (LA&SL) | Railroading Heritage of Midwestern America, Silvis, IL | restoration | Baldwin #56999, 1923 | Appeared in Last of the Giants. Only surviving steam locomotive in the US equipped with Young Valve Gear. Donated to RRHMA, Silvis, IL on Apr 28, 2022. To be restored to operation by RRHMA after the restoration of UP 3985 is complete. |
| 3985 | 46644 | 4-6-6-4 | 4'-8½" | UP | Railroading Heritage of Midwestern America, Silvis, IL | restoration | Alco (Schenectady) #70174, 1943 | Restored to operation in Apr 1981. Masqueraded as UP 3967 in 1993 and 2003. Taken out of service in Oct 2010. Retired from the UP's steam excursion program in Jan 2020. The tender is being used behind UP 4014. Donated to RRHMA, Silvis, IL on Apr 28, 2022. |
| 529 | C-57 | 2-8-0 | 4'-8½" | UP | Northwest Railway Museum, Snoqualmie, WA | display | Baldwin (Burnham) #21672, 1903 | Traded to the Oregon Coast Scenic Railroad, Garibaldi, OR for GN 1246. |
| 4006 | 48841 | 4-8-8-4 | 4'-8½" | UP | Museum of Transportation, St. Louis, MO | display | Alco (Schenectady) #69577, 10/1941 | Displayed with UP Centennial 6944. Cosmetic restoration completed in 2023. |
| 737 (216) | E-31 | 4-4-0 | 4'-8½" | UP (SP) | The Double T, Stevenson, CA | display | Baldwin #8395, 1887 | From Portola. Some list this locomotive in Merced or Turlock. |
| 428 (1648) | C-57 | 2-8-0 | 4'-8½" | UP | Illinois Railway Museum, Union, IL | restoration | Baldwin #18303, 10/1900 | Undergoing restoration to operating condition. Will operate alongside Frisco 2-10-0 1630 and J. Neils Lumber Co. Shay 5 when the restoration to operation is complete. |
| 2537 | USRA | 2-8-2 | 4'-8½" | UP | Jefferson Park, Walla Walla, WA | display | Alco (Schenectady) #60327, 1918 |
