Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Saint Pauls Post Office (historical) | Post Office | 1117 | Blaine | 47 58 38 N | 108 40 22 W |
| Saint Pauls Presbyterian Church | Church | 1622 | Granite | 46 20 03 N | 113 17 38 W |
| Saint Pauls United Methodist Church | Church | 1250 | Lewis and Clark | 46 35 26 N | 112 02 05 W |
| Saint Peter | Locale | 1269 | Cascade | 47 18 09 N | 111 55 05 W |
| Saint Peter | Populated Place | 1269 | Cascade | 47 18 09 N | 111 55 05 W |
| Saint Peter and Paul Church | Church | 1058 | Cascade | 47 30 10 N | 111 13 52 W |
| Saint Peter Lutheran Church | Church | 925 | Flathead | 48 24 55 N | 114 20 23 W |
| Saint Peter Post Office (historical) | Post Office | 1269 | Cascade | 47 18 09 N | 111 55 05 W |
| Saint Peters | Church | 1605 | Deer Lodge | 46 07 33 N | 112 56 52 W |
| Saint Peters Catholic Church | Church | 813 | Wibaux | 46 59 13 N | 104 11 30 W |
| Saint Peters Cemetery | Cemetery | 722 | Richland | 47 53 49 N | 104 19 50 W |
| Saint Peters Church (historical) | Church | 721 | Richland | 47 53 49 N | 104 19 48 W |
| Saint Peters Community Hospital | Hospital | 1259 | Lewis and Clark | 46 34 58 N | 111 59 51 W |
| Saint Peters Community Hospital Heliport | Airport | 1253 | Lewis and Clark | 46 35 04 N | 111 59 50 W |
| Saint Peters Community Hospital Medical Library | Building | 1259 | Lewis and Clark | 46 34 58 N | 111 59 51 W |
| Saint Peters Episcopal Cathedral | Church | 1244 | Lewis and Clark | 46 35 28 N | 112 02 23 W |
| Saint Peters Mission (historical) | Church | 1269 | Cascade | 47 18 09 N | 111 55 05 W |
| Saint Peters Mission Cemetery | Cemetery | 1284 | Cascade | 47 18 02 N | 111 55 15 W |
| Saint Peters Mission Church (historical) | Church | 1269 | Cascade | 47 18 09 N | 111 55 05 W |
| Saint Peters Mission Historical Marker | Park | 1060 | Cascade | 47 10 60 N | 111 49 03 W |
| Saint Philip Benizi Mission | Church | 1183 | Ravalli | 46 01 18 N | 114 10 28 W |
| Saint Philip Bonitus Catholic Church | Church | 762 | Daniels | 48 47 22 N | 105 25 04 W |
| Saint Philip Church | Church | 901 | Wibaux | 46 49 19 N | 104 08 42 W |
| Saint Philips Catholic Church | Church | 1612 | Granite | 46 20 05 N | 113 17 48 W |
| Saint Philips Cemetery | Cemetery | 898 | Wibaux | 46 49 15 N | 104 08 42 W |
| Saint Phillip | Populated Place | 874 | Wibaux | 46 49 54 N | 104 08 44 W |
| Saint Phillip School (historical) | School | 903 | Wibaux | 46 48 56 N | 104 08 37 W |
| Saint Philomena School | School | 591 | Richland | 47 42 32 N | 104 09 24 W |
| Saint Pierre Coulee | Valley | | Hill | 48 16 23 N | 109 48 43 W |
| Saint Raphael School (historical) | School | 644 | Valley | 48 11 55 N | 106 37 58 W |
| Saint Raphaels Catholic Church | Church | 645 | Valley | 48 11 53 N | 106 37 55 W |
| Saint Raymonds Church (historical) | Church | 699 | Sheridan | 48 52 35 N | 104 34 49 W |
| Saint Regis | Locale | 803 | Mineral | 47 17 58 N | 115 06 09 W |
| Saint Regis | Populated Place | 803 | Mineral | 47 17 58 N | 115 06 09 W |
| Saint Regis Beacon | Locale | 1347 | Mineral | 47 17 12 N | 115 03 01 W |
| Saint Regis Branch Library | Building | 803 | Mineral | 47 17 58 N | 115 06 09 W |
| Saint Regis Cemetery | Cemetery | 806 | Mineral | 47 18 20 N | 115 05 15 W |
| Saint Regis Fire Department | Building | 803 | Mineral | 47 17 58 N | 115 06 09 W |
| Saint Regis Fishing Access Site | Locale | 800 | Mineral | 47 18 08 N | 115 05 21 W |
| Saint Regis KOA Kampgrounds | Locale | 847 | Mineral | 47 17 02 N | 115 04 20 W |
| Saint Regis Lake | Lake | 1705 | Mineral | 47 25 34 N | 115 44 34 W |
| Saint Regis Methodist Church (historical) | Church | 803 | Mineral | 47 17 58 N | 115 06 09 W |
| Saint Regis Post Office | Post Office | 803 | Mineral | 47 17 58 N | 115 06 09 W |
| Saint Regis Public Schools | School | 803 | Mineral | 47 17 60 N | 115 06 03 W |
| Saint Regis Riding Stables Campground | Locale | 803 | Mineral | 47 17 58 N | 115 06 09 W |
| Saint Regis River | Stream | | Mineral | 47 17 48 N | 115 05 25 W |
| Saint Regis Visitor Information Center | Building | 803 | Mineral | 47 17 58 N | 115 06 09 W |
| Saint Richard Cemetery | Cemetery | 931 | Flathead | 48 21 48 N | 114 13 07 W |
| Saint Richards Catholic Church | Church | 937 | Flathead | 48 22 15 N | 114 11 53 W |
| Saint Rose of Lima Church | Church | 1309 | Judith Basin | 47 09 08 N | 110 13 24 W |
| Saint Rose of Lima Parish | Church | 1555 | Beaverhead | 45 12 49 N | 112 38 07 W |
| Saint Stephens Church (historical) | Church | 721 | Blaine | 48 31 60 N | 108 47 03 W |
| Saint Stephens Episcopal Church | Church | 1012 | Ravalli | 46 30 37 N | 114 05 38 W |
| Saint Stephens Episcopal Church (historical) | Church | 1164 | Teton | 47 48 45 N | 112 11 01 W |
| Saint Teresa Catholic Church | Church | 1329 | Jefferson | 45 52 18 N | 112 05 43 W |
| Saint Theodore Mission | Church | 1432 | Powell | 46 35 54 N | 112 35 46 W |
| Saint Theresas Catholic Church | Church | 727 | Richland | 47 41 03 N | 104 37 18 W |
| Saint Thomas Aquinas Church | Church | 946 | Blaine | 48 50 10 N | 108 33 52 W |
| Saint Thomas Camp | Locale | 1428 | Cascade | 47 04 16 N | 110 49 13 W |
| Saint Thomas Catholic Church | Church | 608 | Roosevelt | 48 09 05 N | 104 55 04 W |
| Saint Thomas Catholic Church | Church | 1027 | Toole | 48 52 58 N | 111 54 41 W |
| Saint Thomas Catholic Church (historical) | Church | 763 | Daniels | 48 53 42 N | 105 09 48 W |
| Saint Thomas Cemetery | Cemetery | 1316 | Powell | 46 51 59 N | 112 57 23 W |
| Saint Thomas Church | Church | 1039 | Blaine | 48 02 05 N | 108 31 60 W |
| Saint Thomas Church | Church | 1400 | Carbon | 45 21 26 N | 109 10 12 W |
| Saint Thomas Episcopal Church | Church | 885 | Big Horn | 45 44 12 N | 107 36 31 W |
| Saint Thomas the Apostle Church | Church | 721 | Blaine | 48 31 60 N | 108 47 03 W |
| Saint Thomas the Apostle Church | Church | 1312 | Powell | 46 52 03 N | 112 57 31 W |
| Saint Timothys Chapel | Church | 2111 | Deer Lodge | 46 12 42 N | 113 14 24 W |
| Saint Victor Church | Church | 1242 | Fergus | 47 15 14 N | 109 21 36 W |
| Saint Vincent Hospital | Hospital | 970 | Yellowstone | 45 47 36 N | 108 31 10 W |
| Saint Vincent Hospital Heliport | Airport | 952 | Yellowstone | 45 46 59 N | 108 30 08 W |
| Saint Wenceslaus Cemetery | Cemetery | 924 | Hill | 48 53 59 N | 110 31 56 W |
| Saint Wenceslaus Church | Church | 1085 | Fergus | 47 13 27 N | 109 43 02 W |
| Saint Williams Catholic Church | Church | 1603 | Park | 45 01 55 N | 110 42 21 W |
| Saint Williams Catholic Church | Church | 749 | Sanders | 47 35 46 N | 115 20 59 W |
| Saint Williams Catholic Church | Church | 1129 | Teton | 47 50 56 N | 111 42 51 W |
| Saint Williams Catholic Church | Church | 1005 | Toole | 48 30 27 N | 111 51 43 W |
| Saint Xavier | Populated Place | 938 | Big Horn | 45 27 40 N | 107 43 18 W |
| Saint Xavier Catholic Mission Cemetery | Cemetery | 931 | Big Horn | 45 27 49 N | 107 43 51 W |
| Saint Xavier Coulee | Valley | | Big Horn | 45 27 12 N | 107 41 45 W |
| Saint Xavier Post Office | Post Office | 938 | Big Horn | 45 27 41 N | 107 43 15 W |
| Saint Xavier Public School (historical) | School | 939 | Big Horn | 45 27 41 N | 107 43 04 W |
| Saints Cyril and Methodius Catholic Church | Church | 1183 | Lewis and Clark | 46 35 25 N | 111 55 25 W |
| Saints Peter and Paul Church | Church | 1058 | Cascade | 47 30 10 N | 111 13 53 W |
| Saints Rest (historical) | Populated Place | 1049 | Rosebud | 45 41 45 N | 106 41 57 W |
| Salamander Falls | Falls | 2131 | Glacier | 48 45 20 N | 113 44 09 W |
| Saleesh House (historical) | Locale | 737 | Sanders | 47 34 20 N | 115 18 19 W |
| Salefsky Creek | Stream | | Beaverhead | 45 46 22 N | 113 21 43 W |
| Salem | Populated Place | 1024 | Cascade | 47 32 14 N | 111 02 25 W |
| Salem (historical) | Locale | 1024 | Cascade | 47 32 14 N | 111 02 25 W |
| Salem Lutheran Wisconsin Synod | Church | 750 | McCone | 47 24 45 N | 105 35 31 W |
| Salem Post Office (historical) | Post Office | 1024 | Cascade | 47 32 14 N | 111 02 25 W |
| Salem Road Bridge | Bridge | 861 | Cascade | 47 35 06 N | 111 01 49 W |
| Salem School (historical) | School | 1007 | Cascade | 47 33 11 N | 111 02 52 W |
| Salene Reservoir | Reservoir | 769 | Phillips | 47 50 04 N | 107 48 46 W |
| Sales Lake | Lake | 766 | Lincoln | 48 56 39 N | 115 08 30 W |
| Sales Mine | Mine | 1284 | Sanders | 47 57 20 N | 115 08 44 W |
| Sales Prospect | Mine | 1260 | Sanders | 47 57 19 N | 115 08 46 W |
| Salesbury Draw | Valley | | Rosebud | 45 18 01 N | 106 37 17 W |
| Salisbury Post Office (historical) | Post Office | 1428 | Madison | 45 31 13 N | 112 18 43 W |
| Salish Kootenai College | School | 943 | Lake | 47 36 10 N | 114 06 45 W |
| Salish Mountains | Range | 1539 | Lincoln | 48 15 60 N | 114 44 04 W |
| Salix Creek | Stream | | Beaverhead | 45 40 56 N | 113 39 19 W |
| Sallie Bell | Mine | 2249 | Lewis and Clark | 46 27 09 N | 112 12 28 W |
| Sally Ann Creek | Stream | | Powell | 46 27 33 N | 112 20 08 W |
| Sally Basin | Basin | 1395 | Missoula | 46 42 44 N | 114 30 23 W |
| Sally Ridge | Ridge | 1806 | Missoula | 46 43 02 N | 114 27 58 W |
| Sally Ridge Trail | Trail | 2026 | Missoula | 46 42 25 N | 114 25 49 W |
| Salmon Creek | Stream | | Powell | 47 03 02 N | 112 54 46 W |