Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Ruzicka Airport | Airport | 254 | Howard | 40 26 00 N | 086 11 00 W |
| Ruzicka Drain | Stream | | Howard | 40 26 18 N | 086 11 05 W |
| Ryan Appleton Ditch | Canal | 210 | Carroll | 40 39 46 N | 086 28 20 W |
| Ryan Ditch | Canal | 235 | Allen | 41 03 01 N | 084 56 29 W |
| Ryan Ditch | Canal | 206 | Starke | 41 05 52 N | 087 01 02 W |
| Ryan Ditch | Canal | 315 | Steuben | 41 41 52 N | 084 53 06 W |
| Ryan Ditch | Canal | 262 | Tipton | 40 16 13 N | 085 58 56 W |
| Ryan Kraisinger Ditch | Canal | 209 | Jasper | 41 07 58 N | 086 59 12 W |
| Ryden Lakes | Lake | 256 | LaPorte | 41 37 21 N | 086 49 46 W |
| Rykers Ridge | Ridge | 276 | Jefferson | 38 46 24 N | 085 19 56 W |
| Rykers Ridge Cemetery | Cemetery | 278 | Jefferson | 38 46 40 N | 085 19 56 W |
| Rykers Ridge Church | Church | 276 | Jefferson | 38 46 24 N | 085 19 56 W |
| S Ellen Jones Elementary School | School | 141 | Floyd | 38 17 32 N | 085 48 54 W |
| S Garrard Ditch | Canal | 200 | Newton | 40 52 19 N | 087 30 21 W |
| S W N Henderson Ditch | Canal | 251 | Howard | 40 32 32 N | 086 07 31 W |
| Sabine | Locale | 241 | Marion | 39 45 41 N | 086 17 08 W |
| Sabine Post Office (historical) | Post Office | 241 | Marion | 39 45 41 N | 086 17 08 W |
| Sacarider Lake | Lake | 292 | Noble | 41 26 07 N | 085 19 12 W |
| Sacred Heart Cemetery | Cemetery | 222 | Jasper | 40 46 09 N | 087 09 46 W |
| Sacred Heart Cemetery | Cemetery | 224 | Porter | 41 26 07 N | 086 55 51 W |
| Sacred Heart Church | Church | 179 | Lake | 41 40 53 N | 087 29 47 W |
| Sacred Heart Church | Church | 139 | Perry | 38 05 38 N | 086 28 55 W |
| Sacred Heart Church | Church | 262 | St. Joseph | 41 34 14 N | 086 15 47 W |
| Sacred Heart Elementary School | School | 247 | Allen | 41 02 23 N | 085 07 19 W |
| Sacred Heart High School | School | 218 | Marion | 39 44 47 N | 086 09 33 W |
| Sacred Heart Home | Building | 305 | Noble | 41 22 29 N | 085 15 05 W |
| Sacred Heart of Jesus Roman Catholic Church | Church | 218 | Marion | 39 44 47 N | 086 09 32 W |
| Sacred Heart of Jesus School | School | 143 | Clark | 38 17 37 N | 085 42 51 W |
| Sacred Heart Primary School | School | 119 | Vanderburgh | 37 58 52 N | 087 36 22 W |
| Sacred Heart Roman Catholic Church | Church | 179 | Lake | 41 37 59 N | 087 28 44 W |
| Sacred Heart School | School | 248 | Benton | 40 37 25 N | 087 19 15 W |
| Sacred Heart School | School | 204 | Dubois | 38 20 29 N | 086 45 19 W |
| Sacred Heart School | School | 179 | Lake | 41 40 56 N | 087 29 48 W |
| Sacred Heart School | School | 183 | Lake | 41 35 18 N | 087 22 21 W |
| Sacred Heart School | School | 119 | Posey | 37 58 53 N | 087 36 23 W |
| Sacred Heart School | School | 218 | St. Joseph | 41 40 22 N | 086 16 01 W |
| Sacred Heart School | School | 150 | Vermillion | 39 39 14 N | 087 24 12 W |
| Sacred Heart School | School | 149 | Vigo | 39 29 36 N | 087 23 50 W |
| Sacred Heart Schools | School | 129 | Knox | 38 41 23 N | 087 30 41 W |
| Saddle Creek | Stream | | Bartholomew | 39 18 14 N | 086 03 22 W |
| Saddle Creek | Stream | | Monroe | 39 03 49 N | 086 23 16 W |
| Saddle Lake | Reservoir | 250 | Adams | 40 51 24 N | 084 53 54 W |
| Saddle Lake | Reservoir | 150 | Perry | 38 03 50 N | 086 39 55 W |
| Saddle Lake Dam | Dam | 250 | Adams | 40 51 24 N | 084 53 54 W |
| Saddle Lake Recreation Area | Park | 144 | Perry | 38 03 50 N | 086 39 57 W |
| Sage Ditch | Canal | 203 | Jasper | 40 56 44 N | 087 03 19 W |
| Sage Lake | Reservoir | 218 | Brown | 39 11 49 N | 086 11 10 W |
| Sage Lake Dam | Dam | 218 | Brown | 39 11 49 N | 086 11 10 W |
| Sager Cemetery | Cemetery | 276 | Jay | 40 25 26 N | 085 02 23 W |
| Sagers Lake | Lake | 221 | Porter | 41 27 13 N | 087 03 05 W |
| Saint Adalbert School | School | 218 | St. Joseph | 41 40 06 N | 086 17 01 W |
| Saint Adalherts School | School | 178 | Lake | 41 40 31 N | 087 29 41 W |
| Saint Agnes Academy | School | 219 | Marion | 39 47 07 N | 086 09 29 W |
| Saint Agnes Church | Church | 226 | Brown | 39 12 56 N | 086 14 48 W |
| Saint Agnes School | School | 116 | Posey | 37 57 32 N | 087 36 57 W |
| Saint Agnes School | School | 115 | Vanderburgh | 37 57 33 N | 087 36 55 W |
| Saint Albans Episcopal Church | Church | 244 | Marion | 39 50 28 N | 086 05 00 W |
| Saint Aloysius Catholic School | School | 244 | Allen | 40 56 55 N | 085 10 02 W |
| Saint Ambrose Cemetery | Cemetery | 185 | Jackson | 38 58 11 N | 085 53 26 W |
| Saint Ambrose School | School | 183 | Jackson | 38 57 19 N | 085 53 17 W |
| Saint Ambrose School | School | 268 | Madison | 40 05 16 N | 085 41 08 W |
| Saint Andrew African Methodist Episcopal Zion Church | Church | 183 | Lake | 41 35 49 N | 087 22 31 W |
| Saint Andrew the Apostle Roman Catholic Church | Church | 241 | Marion | 39 49 36 N | 086 05 58 W |
| Saint Andrew the Apostle School | School | 241 | Marion | 39 49 35 N | 086 05 57 W |
| Saint Andrew United Presbyterian | Church | 234 | Marion | 39 51 43 N | 086 06 23 W |
| Saint Andrew's Episcopal Church | Church | 237 | Porter | 41 28 14 N | 087 03 33 W |
| Saint Andrews Cemetery | Cemetery | 291 | Wayne | 39 48 22 N | 084 54 13 W |
| Saint Andrews Church | Church | 278 | Delaware | 40 14 16 N | 085 25 04 W |
| Saint Andrews Church | Church | 192 | LaPorte | 41 44 30 N | 086 50 17 W |
| Saint Andrews Lutheran Church | Church | 229 | Marion | 39 47 53 N | 086 15 39 W |
| Saint Andrews School | School | 246 | Allen | 41 04 00 N | 085 06 11 W |
| Saint Andrews School | School | 297 | Wayne | 39 49 29 N | 084 53 43 W |
| Saint Ann Church | Church | 184 | Lake | 41 34 22 N | 087 24 40 W |
| Saint Ann Roman Catholic Church | Church | 212 | Marion | 39 43 23 N | 086 13 33 W |
| Saint Ann School | School | 184 | Lake | 41 34 21 N | 087 24 41 W |
| Saint Ann School | School | 212 | Marion | 39 43 24 N | 086 13 34 W |
| Saint Annes Cemetery | Cemetery | 292 | Franklin | 39 23 06 N | 085 14 45 W |
| Saint Anns Cemetery | Cemetery | 236 | Fulton | 40 57 37 N | 086 23 09 W |
| Saint Anns Church | Church | 191 | Porter | 41 40 21 N | 086 58 56 W |
| Saint Anns Home | Building | 181 | Lake | 41 36 20 N | 087 29 57 W |
| Saint Anns School | School | 225 | Jennings | 39 03 09 N | 085 34 59 W |
| Saint Anns School | School | 150 | Vigo | 39 28 41 N | 087 23 39 W |
| Saint Anthony | Populated Place | 166 | Dubois | 38 18 52 N | 086 49 36 W |
| Saint Anthony Airport (historical) | Airport | 231 | Lake | 41 23 35 N | 087 22 00 W |
| Saint Anthony Catholic Church | Church | 323 | Steuben | 41 38 10 N | 085 00 27 W |
| Saint Anthony Cemetery | Cemetery | 187 | Jefferson | 38 49 28 N | 085 20 28 W |
| Saint Anthony Conservation Club Dam | Dam | 170 | Dubois | 38 17 21 N | 086 50 06 W |
| Saint Anthony Conservation Club Lake | Reservoir | 170 | Dubois | 38 17 21 N | 086 50 06 W |
| Saint Anthony Conservation Lake | Reservoir | 170 | Dubois | 38 17 23 N | 086 50 10 W |
| Saint Anthony De Padua School | School | 223 | St. Joseph | 41 40 20 N | 086 12 53 W |
| Saint Anthony Medical Center | Hospital | 231 | Lake | 41 23 48 N | 087 21 58 W |
| Saint Anthony Roman Catholic Church | Church | 216 | Marion | 39 46 20 N | 086 12 22 W |
| Saint Anthony School | School | 138 | Clark | 38 17 37 N | 085 45 40 W |
| Saint Anthony School | School | 174 | Dubois | 38 18 55 N | 086 49 33 W |
| Saint Anthony School | School | 118 | Vanderburgh | 37 59 06 N | 087 34 33 W |
| Saint Anthony School Lake | Reservoir | 169 | Dubois | 38 19 00 N | 086 49 30 W |
| Saint Anthony School Lake Dam | Dam | 169 | Dubois | 38 19 00 N | 086 49 30 W |
| Saint Anthonys Cemetery | Cemetery | 140 | Clark | 38 17 04 N | 085 43 41 W |
| Saint Anthonys Center Lake | Reservoir | 268 | DeKalb | 41 19 42 N | 085 02 48 W |
| Saint Anthonys Center Lake Dam | Dam | 268 | DeKalb | 41 19 42 N | 085 02 48 W |
| Saint Anthonys Hospital | Hospital | 191 | LaPorte | 41 42 23 N | 086 54 02 W |
| Saint Anthonys School | School | 216 | Marion | 39 46 19 N | 086 12 22 W |
| Saint Anthonys School | School | 119 | Posey | 37 59 04 N | 087 34 34 W |
| Saint Anthonys Spiritual Temple | Church | 215 | Marion | 39 48 07 N | 086 10 14 W |
| Saint Augusta Church | Church | 197 | Newton | 41 08 43 N | 087 27 10 W |
| Saint Augustine Church | Church | 273 | Hendricks | 39 46 09 N | 086 31 28 W |
| Saint Augustine School | School | 203 | Jasper | 40 56 23 N | 087 09 04 W |
| Saint Augustine's Church | Church | 186 | Lake | 41 35 02 N | 087 22 05 W |
| Saint Augustinus Church | Church | 222 | Perry | 38 06 08 N | 086 34 56 W |
| Saint Barnabas Church | Church | 186 | Lake | 41 36 56 N | 087 13 48 W |