Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Power Drive Ski Trail | Trail | 1816 | Lewis and Clark | 46 45 12 N | 112 18 50 W |
| Power Farmers Elevator (historical) | Locale | 1126 | Teton | 47 42 57 N | 111 41 13 W |
| Power Gulch | Valley | | Broadwater | 46 17 40 N | 111 43 16 W |
| Power Plant (historical) | Populated Place | 713 | Blaine | 47 44 25 N | 108 54 12 W |
| Power Post Office | Post Office | 1126 | Teton | 47 42 57 N | 111 41 13 W |
| Power Post Office (historical) | Post Office | 1108 | Lewis and Clark | 47 02 38 N | 112 02 58 W |
| Power Public Schools | School | 1127 | Teton | 47 42 60 N | 111 41 19 W |
| Powerhouse Fishing Access Site | Locale | 1669 | Beaverhead | 45 46 40 N | 112 50 05 W |
| Powerhouse Museum | Building | 627 | McCone | 48 00 48 N | 106 24 45 W |
| Powerhouse Yellowtail Dam | Dam | 1118 | Big Horn | 45 18 25 N | 107 57 29 W |
| Powers | Populated Place | 1343 | Gallatin | 45 47 48 N | 111 09 32 W |
| Powers Brothers Ditch | Canal | 1102 | Big Horn | 45 01 51 N | 106 53 52 W |
| Powers Cormack Ditch | Canal | 1106 | Big Horn | 45 02 26 N | 106 54 11 W |
| Powers Coulee | Valley | | Garfield | 47 27 22 N | 106 23 31 W |
| Powers Creek | Stream | | Carbon | 45 15 33 N | 109 18 29 W |
| Powers Creek | Stream | | Granite | 46 31 10 N | 113 37 14 W |
| Powers Creek | Stream | | Toole | 48 49 20 N | 111 35 45 W |
| Powers Post (historical) | Locale | 1243 | Glacier | 48 22 60 N | 112 45 33 W |
| Powers Post (historical) | Locale | 768 | Hill | 48 34 15 N | 109 45 33 W |
| Powers School (historical) | School | 1294 | Big Horn | 45 01 20 N | 107 35 30 W |
| Powers Upper Ditch | Canal | 1304 | Big Horn | 45 01 04 N | 107 35 29 W |
| Powers-Wade School (historical) | School | 828 | Prairie | 46 37 44 N | 105 07 22 W |
| Pownal | Locale | 958 | Fergus | 47 24 45 N | 110 11 41 W |
| Pownal | Populated Place | 958 | Fergus | 47 24 45 N | 110 11 41 W |
| Pozega Lake Number 1 Dam | Dam | 2298 | Granite | 46 17 06 N | 113 04 09 W |
| Pozega Lake Number 2 Dam | Dam | 2348 | Granite | 46 16 42 N | 113 04 27 W |
| Pozega Lake Number 3 Dam | Dam | 2381 | Granite | 46 17 12 N | 113 04 45 W |
| Pozega Lakes | Lake | 2299 | Granite | 46 16 58 N | 113 04 25 W |
| PR 40 Reservoir | Reservoir | 762 | Phillips | 48 26 12 N | 107 26 29 W |
| PR-11 Dam | Dam | 841 | Phillips | 47 50 54 N | 108 12 14 W |
| PR-110 Dam | Dam | 856 | Phillips | 48 42 12 N | 108 02 14 W |
| PR-132 Dam | Dam | 794 | Phillips | 48 25 06 N | 108 02 56 W |
| PR-139 Dam | Dam | 776 | Phillips | 47 56 36 N | 107 33 44 W |
| PR-147 Dam | Dam | 842 | Phillips | 47 54 12 N | 108 04 32 W |
| PR-156 Dam | Dam | 788 | Phillips | 48 56 06 N | 107 32 56 W |
| PR-16 Dam | Dam | 845 | Phillips | 48 05 30 N | 108 18 56 W |
| PR-161 Dam | Dam | 776 | Phillips | 48 09 48 N | 108 05 14 W |
| PR-174 Dam | Dam | 787 | Phillips | 48 25 54 N | 107 54 44 W |
| PR-19 Dam | Dam | 767 | Phillips | 47 58 24 N | 107 31 08 W |
| PR-35 Dam | Dam | 929 | Phillips | 47 51 06 N | 108 17 26 W |
| PR-36 Dam | Dam | 817 | Phillips | 48 15 30 N | 107 50 14 W |
| PR-40 Dam | Dam | 778 | Phillips | 48 25 54 N | 107 26 32 W |
| PR-54 Dam | Dam | 832 | Phillips | 48 57 30 N | 107 47 56 W |
| PR-56 Dam | Dam | 878 | Phillips | 48 36 36 N | 108 13 08 W |
| PR-83 Dam | Dam | 806 | Phillips | 48 58 54 N | 107 28 26 W |
| PR-88 Dam | Dam | 786 | Phillips | 48 56 12 N | 107 32 56 W |
| PR-95 Dam | Dam | 748 | Phillips | 48 11 48 N | 108 00 56 W |
| PR-98 Dam | Dam | 838 | Phillips | 48 34 42 N | 108 11 56 W |
| Praine Creek | Stream | | Ravalli | 45 48 36 N | 113 57 13 W |
| Prairie Center School (historical) | School | 773 | Phillips | 48 16 35 N | 107 41 35 W |
| Prairie City Post Office (historical) | Post Office | 882 | Chouteau | 48 17 03 N | 110 29 43 W |
| Prairie City School (historical) | School | 882 | Chouteau | 48 17 03 N | 110 29 43 W |
| Prairie Community Hospital | Hospital | 686 | Prairie | 46 47 29 N | 105 18 55 W |
| Prairie Community Nursing Home | Hospital | 686 | Prairie | 46 47 29 N | 105 18 55 W |
| Prairie County | Civil | 765 | Prairie | 46 51 00 N | 105 22 02 W |
| Prairie County Cemetery | Cemetery | 681 | Prairie | 46 47 17 N | 105 20 42 W |
| Prairie County Clinic | Hospital | 686 | Prairie | 46 47 35 N | 105 18 44 W |
| Prairie County Courthouse | Building | 687 | Prairie | 46 47 33 N | 105 18 50 W |
| Prairie County Fairgrounds | Locale | 685 | Prairie | 46 47 50 N | 105 19 47 W |
| Prairie County Library | Building | 685 | Prairie | 46 47 27 N | 105 18 53 W |
| Prairie County Museum | Building | 685 | Prairie | 46 47 37 N | 105 18 48 W |
| Prairie County Sheriff Office | Building | 687 | Prairie | 46 47 33 N | 105 18 50 W |
| Prairie Creek | Stream | | Beaverhead | 45 42 60 N | 113 53 03 W |
| Prairie Creek | Stream | | Custer | 46 33 37 N | 105 30 30 W |
| Prairie Creek | Stream | | Lewis and Clark | 47 34 22 N | 112 54 50 W |
| Prairie Creek | Stream | | Meagher | 46 23 35 N | 110 56 02 W |
| Prairie Creek | Stream | | Powder River | 45 27 10 N | 105 27 57 W |
| Prairie Creek | Stream | | Powder River | 45 40 10 N | 105 13 28 W |
| Prairie Creek | Stream | | Stillwater | 45 25 57 N | 109 47 59 W |
| Prairie Dale (historical) | Populated Place | 988 | Carter | 45 41 50 N | 104 30 12 W |
| Prairie Dell Oil and Gas Field | Oilfield | 1071 | Toole | 48 38 33 N | 111 53 15 W |
| Prairie Dell School (historical) | School | 1145 | Cascade | 47 40 30 N | 111 38 03 W |
| Prairie Dell School (historical) | School | 1060 | Toole | 48 36 34 N | 111 50 32 W |
| Prairie Dog Coulee | Valley | | Rosebud | 46 12 05 N | 106 56 25 W |
| Prairie Dog Creek | Stream | | Carter | 45 28 23 N | 104 29 30 W |
| Prairie Dog Creek | Stream | | Custer | 45 51 06 N | 105 41 11 W |
| Prairie Dog Creek | Stream | | Powder River | 45 02 25 N | 105 20 53 W |
| Prairie Dog Creek | Stream | | Powder River | 45 36 54 N | 106 03 26 W |
| Prairie Dog Creek | Stream | | Rosebud | 45 16 10 N | 106 37 27 W |
| Prairie Dog Creek | Stream | | Stillwater | 45 26 02 N | 109 45 48 W |
| Prairie DOG Dam | Dam | 879 | Fergus | 47 30 18 N | 108 23 14 W |
| Prairie Drive-In Theater | Locale | 683 | Prairie | 46 47 29 N | 105 18 03 W |
| Prairie Elk (historical) | Populated Place | 682 | McCone | 47 47 00 N | 105 51 47 W |
| Prairie Elk Cemetery | Cemetery | 718 | McCone | 47 54 15 N | 105 49 11 W |
| Prairie Elk Creek | Stream | | McCone | 48 00 31 N | 105 51 26 W |
| Prairie Elk Lutheran Church | Church | 718 | McCone | 47 54 15 N | 105 49 11 W |
| Prairie Elk Post Office (historical) | Post Office | 682 | McCone | 47 47 00 N | 105 51 47 W |
| Prairie Elk School | School | 730 | McCone | 47 44 45 N | 105 52 39 W |
| Prairie Goat Dam | Dam | 727 | Dawson | 46 53 48 N | 104 38 14 W |
| Prairie Goat Reservoir | Reservoir | 728 | Dawson | 46 53 44 N | 104 38 13 W |
| Prairie Grain and Seed Incorporated Elevator (historical) | Locale | 685 | Prairie | 46 47 39 N | 105 18 52 W |
| Prairie Gulch | Valley | | Blaine | 48 13 20 N | 109 14 21 W |
| Prairie Gulch | Valley | | Broadwater | 46 15 25 N | 111 40 20 W |
| Prairie Gulch | Valley | | Deer Lodge | 46 13 59 N | 112 51 46 W |
| Prairie Lake | Lake | 790 | Hill | 48 27 08 N | 109 54 02 W |
| Prairie Lawn Cemetery | Cemetery | 734 | Dawson | 47 45 40 N | 105 20 34 W |
| Prairie Mobile Village | Populated Place | 1147 | Lewis and Clark | 46 37 52 N | 111 56 03 W |
| Prairie Nest Ranch 1 Dam | Dam | 1022 | Cascade | 47 31 48 N | 111 00 51 W |
| Prairie Nest Ranch 2 Dam | Dam | 1024 | Cascade | 47 31 24 N | 111 06 57 W |
| Prairie Nest Ranch 3 Dam | Dam | 1033 | Cascade | 47 31 06 N | 111 00 33 W |
| Prairie Nest Ranch 4 Dam | Dam | 1027 | Cascade | 47 31 30 N | 111 00 33 W |
| Prairie Reef | Ridge | 2461 | Lewis and Clark | 47 36 17 N | 113 01 05 W |
| Prairie Reef Lookout | Locale | 2698 | Lewis and Clark | 47 35 40 N | 113 00 55 W |
| Prairie Reservoir | Reservoir | 725 | Valley | 47 51 47 N | 106 54 39 W |
| Prairie Rose School (historical) | School | 767 | Blaine | 48 36 38 N | 109 29 23 W |
| Prairie Rose School (historical) | School | 961 | Blaine | 48 57 02 N | 108 43 09 W |
| Prairie Rose School (historical) | School | 948 | Liberty | 48 25 17 N | 111 06 11 W |
| Prairie States Cooperative | Locale | 597 | Sheridan | 48 36 20 N | 104 27 35 W |
| Prairie Trail | Trail | 1440 | Lewis and Clark | 46 35 23 N | 112 03 31 W |
| Prairie Union School (historical) | School | 712 | Phillips | 47 45 47 N | 107 46 21 W |