Feature Name | Class | Elev.
meters | County | Latitude
DMS | Longitude
DMS |
| Fort Connah Historical Marker | Park | 854 | Lake | 47 24 20 N | 114 05 48 W |
| Fort Conrad (historical) | Locale | 927 | Toole | 48 22 23 N | 111 45 28 W |
| Fort Conrad Historical Monument | Park | 927 | Toole | 48 22 23 N | 111 45 28 W |
| Fort Copeland (historical) | Locale | 619 | Valley | 48 03 28 N | 106 19 17 W |
| Fort Cotton (historical) | Locale | 811 | Chouteau | 47 47 20 N | 110 43 03 W |
| Fort Custer (historical) | Locale | 919 | Big Horn | 45 43 50 N | 107 34 27 W |
| Fort Custer (historical) | Locale | 926 | Big Horn | 45 43 37 N | 107 34 28 W |
| Fort Custer Golf Club | Locale | 878 | Big Horn | 45 47 09 N | 107 37 28 W |
| Fort Custer Military Reservation (historical) | Military (Historical) | 926 | Big Horn | 45 43 35 N | 107 34 30 W |
| Fort Custer Post Office (historical) | Post Office | 925 | Big Horn | 45 43 40 N | 107 34 27 W |
| Fort Dauphin (historical) | Locale | 620 | Valley | 48 02 20 N | 106 08 42 W |
| Fort Elizabeth Meagher (historical) | Military (Historical) | 1600 | Gallatin | 45 38 30 N | 110 55 05 W |
| Fort Ellis (historical) | Military (Historical) | 1520 | Gallatin | 45 39 16 N | 110 56 35 W |
| Fort Ellis Farm Bureau Community Building | Building | 1491 | Gallatin | 45 40 02 N | 110 58 52 W |
| Fort Ellis Historical Marker | Park | 1491 | Gallatin | 45 40 07 N | 110 58 32 W |
| Fort Ellis Post Office (historical) | Post Office | 1519 | Gallatin | 45 39 16 N | 110 56 38 W |
| Fort Fizzle (historical) | Military (Historical) | 1031 | Missoula | 46 44 42 N | 114 11 26 W |
| Fort Fizzle Campground | Locale | 1039 | Missoula | 46 44 46 N | 114 11 28 W |
| Fort Fizzle Historic Site | Locale | 1031 | Missoula | 46 44 42 N | 114 11 29 W |
| Fort Fourchette (historical) | Locale | 685 | Phillips | 47 39 41 N | 107 39 14 W |
| Fort Galpin (historical) | Locale | 630 | Valley | 48 02 37 N | 106 25 35 W |
| Fort Gay Hill | Summit | 1903 | Meagher | 46 18 17 N | 110 38 26 W |
| Fort Gilbert (historical) | Locale | 579 | Richland | 47 47 57 N | 104 04 29 W |
| Fort Green Clay Smith (historical) | Military (Historical) | 1336 | Park | 45 43 20 N | 110 27 40 W |
| Fort Harrison | Locale | 1213 | Lewis and Clark | 46 38 05 N | 112 05 58 W |
| Fort Harrison Army Air Field | Airport | 1232 | Lewis and Clark | 46 37 32 N | 112 06 38 W |
| Fort Harrison Post Office | Post Office | 1208 | Lewis and Clark | 46 37 25 N | 112 05 53 W |
| Fort Henry (historical) | Locale | 1244 | Gallatin | 45 54 12 N | 111 32 33 W |
| Fort Howes (historical) | Military (Historical) | 1005 | Powder River | 45 16 60 N | 106 08 53 W |
| Fort Howes Ranger Station | Locale | 1006 | Powder River | 45 18 02 N | 106 09 18 W |
| Fort Howie (historical) | Military (Historical) | 1502 | Meagher | 46 31 40 N | 110 23 30 W |
| Fort Ida Thoroughman (historical) | Military (Historical) | 1336 | Park | 45 43 20 N | 110 27 40 W |
| Fort Jackson (historical) | Locale | 607 | Roosevelt | 48 06 47 N | 105 11 54 W |
| Fort Kaiser (historical) | Locale | 623 | Valley | 48 03 44 N | 106 24 23 W |
| Fort Keogh (historical) | Locale | 723 | Custer | 46 22 32 N | 105 53 02 W |
| Fort Keogh (historical) | Military (Historical) | 723 | Custer | 46 22 32 N | 105 52 60 W |
| Fort Keogh Bridge | Bridge | 714 | Custer | 46 23 53 N | 105 53 44 W |
| Fort Keogh Cemetery (historical) | Cemetery | 725 | Custer | 46 22 48 N | 105 53 17 W |
| Fort Keogh Livestock and Range Research Station | Locale | 807 | Custer | 46 20 00 N | 105 52 34 W |
| Fort Keogh Post Office (historical) | Post Office | 723 | Custer | 46 22 32 N | 105 53 02 W |
| Fort Kipp | Populated Place | 592 | Roosevelt | 48 08 48 N | 104 42 57 W |
| Fort Kipp - Makaicu Presbyterian Church | Church | 592 | Roosevelt | 48 08 48 N | 104 42 57 W |
| Fort Kipp (historical) | Locale | 586 | Roosevelt | 48 07 41 N | 104 45 27 W |
| Fort Kipp (historical) | Locale | 592 | Roosevelt | 48 08 48 N | 104 42 57 W |
| Fort Kipp School (historical) | School | 597 | Roosevelt | 48 08 55 N | 104 42 59 W |
| Fort Knox Mine | Mine | 1799 | Madison | 45 27 50 N | 112 07 48 W |
| Fort LaBarge (historical) | Locale | 801 | Chouteau | 47 48 20 N | 110 40 53 W |
| Fort Lazy Y Trailer Park | Populated Place | 885 | Lake | 47 49 42 N | 114 20 51 W |
| Fort Lewis (historical) | Locale | 811 | Chouteau | 47 47 20 N | 110 43 03 W |
| Fort Logan | Populated Place | 1414 | Meagher | 46 40 43 N | 111 10 22 W |
| Fort Logan (historical) | Military (Historical) | 1414 | Meagher | 46 40 43 N | 111 10 19 W |
| Fort Logan Post Office (historical) | Post Office | 1414 | Meagher | 46 40 43 N | 111 10 22 W |
| Fort Logan School (historical) | School | 1414 | Meagher | 46 40 43 N | 111 10 22 W |
| Fort Maginnis (historical) | Military (Historical) | 1268 | Fergus | 47 08 30 N | 109 08 02 W |
| Fort Maginnis Cemetery | Cemetery | 1345 | Fergus | 47 11 13 N | 109 08 49 W |
| Fort Maginnis Historical Marker | Park | 1233 | Fergus | 47 03 45 N | 109 06 52 W |
| Fort Maginnis Military Reservation (historical) | Military (Historical) | 1290 | Fergus | 47 10 00 N | 109 07 32 W |
| Fort Maginnis Post Office (historical) | Post Office | 1214 | Fergus | 47 09 25 N | 109 05 10 W |
| Fort Maginnis School (historical) | School | 1284 | Fergus | 47 10 42 N | 109 07 12 W |
| Fort Manuel Lisa (historical) | Locale | 821 | Treasure | 46 09 42 N | 107 27 34 W |
| Fort McLeod (historical) | Locale | 1470 | Sweet Grass | 45 39 50 N | 110 06 43 W |
| Fort Missoula (historical) | Military (Historical) | 961 | Missoula | 46 50 34 N | 114 03 29 W |
| Fort Missoula Park | Park | 962 | Missoula | 46 50 35 N | 114 03 06 W |
| Fort Musselshell (historical) | Locale | 685 | Petroleum | 47 27 20 N | 107 54 52 W |
| Fort Musselshell Historical Marker (historical) | Park | 799 | Garfield | 46 59 20 N | 107 51 20 W |
| Fort Musselshell School (historical) | School | 707 | Petroleum | 47 25 46 N | 107 55 52 W |
| Fort Owen (historical) | Military (Historical) | 1004 | Ravalli | 46 31 11 N | 114 05 45 W |
| Fort Owen Historical Marker | Park | 1009 | Ravalli | 46 31 22 N | 114 06 53 W |
| Fort Owen Post Office (historical) | Post Office | 1003 | Ravalli | 46 31 11 N | 114 05 48 W |
| Fort Owen State Park | Park | 1003 | Ravalli | 46 31 10 N | 114 05 48 W |
| Fort Parker (historical) | Locale | 1329 | Park | 45 42 48 N | 110 24 01 W |
| Fort Pease | Locale | 815 | Treasure | 46 13 48 N | 107 25 44 W |
| Fort Peck (historical) | Locale | 662 | Valley | 48 00 37 N | 106 26 51 W |
| Fort Peck Cemetery | Cemetery | 688 | Valley | 48 00 25 N | 106 27 38 W |
| Fort Peck Chapel | Church | 672 | Valley | 48 00 28 N | 106 26 57 W |
| Fort Peck Community College | School | 609 | Roosevelt | 48 06 55 N | 105 10 15 W |
| Fort Peck Dam | Dam | 703 | McCone | 48 00 10 N | 106 24 58 W |
| Fort Peck Dam | Dam | 686 | McCone | 48 00 00 N | 106 25 02 W |
| Fort Peck Dredge Cuts Fishing Access Site | Locale | 620 | Valley | 48 03 19 N | 106 26 30 W |
| Fort Peck Indian Reservation | Reserve | 819 | Roosevelt | 48 25 38 N | 105 26 32 W |
| Fort Peck Indian Reservation Historical Marker | Park | 607 | Roosevelt | 48 06 47 N | 105 11 54 W |
| Fort Peck Lake | Reservoir | 703 | McCone | 48 00 10 N | 106 24 58 W |
| Fort Peck Post Office | Post Office | 667 | Valley | 48 00 33 N | 106 26 59 W |
| Fort Peck Post Office (historical) | Post Office | 686 | Valley | 47 58 56 N | 106 27 11 W |
| Fort Peck Recreation Area | Park | 701 | Valley | 47 59 48 N | 106 29 22 W |
| Fort Peck Reservation Number 1 Dam | Dam | 816 | Valley | 48 30 00 N | 106 18 02 W |
| Fort Peck Reservation Number 11 Dam | Dam | 806 | Valley | 48 28 30 N | 106 19 14 W |
| Fort Peck Reservation Number 12 Dam | Dam | 653 | Valley | 48 04 30 N | 105 57 02 W |
| Fort Peck Reservation Number 15 Dam | Dam | 688 | Valley | 48 08 24 N | 106 07 38 W |
| Fort Peck Reservation Number 21 Dam | Dam | 821 | Roosevelt | 48 24 24 N | 105 28 50 W |
| Fort Peck Reservation Number 22 Dam | Dam | 701 | Roosevelt | 48 14 06 N | 105 16 20 W |
| Fort Peck Reservation Number 23 Dam | Dam | 605 | Roosevelt | 48 18 12 N | 104 48 38 W |
| Fort Peck Reservation Number 4 Dam | Dam | 792 | Valley | 48 19 00 N | 106 18 44 W |
| Fort Peck Reservation Number 6 Dam | Dam | 703 | Valley | 48 09 48 N | 106 17 14 W |
| Fort Peck School | School | 662 | Valley | 48 00 36 N | 106 26 52 W |
| Fort Peck Tribal Museum | Building | 608 | Roosevelt | 48 06 53 N | 105 10 16 W |
| Fort Peck Trout Pond | Reservoir | 620 | Valley | 48 03 17 N | 106 26 30 W |
| Fort Piegan | Populated Place | 1217 | Glacier | 48 37 50 N | 112 38 51 W |
| Fort Piegan (historical) | Locale | 783 | Chouteau | 47 55 38 N | 110 29 43 W |
| Fort Ponderosa RV Park | Locale | 1206 | Cascade | 47 22 60 N | 110 57 33 W |
| Fort Poplar (historical) | Locale | 602 | Roosevelt | 48 06 28 N | 105 11 46 W |
| Fort Sarpy (historical) | Locale | 755 | Rosebud | 46 16 50 N | 106 27 39 W |
| Fort Sarpy (historical) | Locale | 794 | Treasure | 46 18 01 N | 107 07 45 W |
| Fort Shaw | Populated Place | 1068 | Cascade | 47 30 20 N | 111 48 37 W |
| Fort Shaw (historical) | Locale | 1068 | Cascade | 47 30 31 N | 111 48 51 W |
| Fort Shaw (historical) | Military (Historical) | 1069 | Cascade | 47 30 32 N | 111 49 12 W |
| Fort Shaw Canal | Canal | 1108 | Cascade | 47 29 03 N | 111 53 26 W |
| Fort Shaw Cemetery | Cemetery | 1069 | Cascade | 47 30 25 N | 111 50 08 W |
| Fort Shaw Elementary School | School | 1069 | Cascade | 47 30 35 N | 111 49 19 W |
| Fort Shaw Fire Department | Building | 1068 | Cascade | 47 30 20 N | 111 48 37 W |
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