Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Schulte School (historical) | School | 203 | Marshall | 41 05 19 N | 089 01 36 W |
| Schultz Hall | Building | 137 | Cass | 40 00 50 N | 090 26 00 W |
| Schultz Park | Park | 188 | Cook | 41 33 33 N | 087 32 03 W |
| Schultz Quarry | Mine | 242 | Jo Daviess | 42 24 02 N | 090 10 23 W |
| Schultz Quarry | Mine | 206 | Whiteside | 41 55 02 N | 089 52 53 W |
| Schultz School (historical) | School | 281 | Kane | 42 02 51 N | 088 34 24 W |
| Schulzes School (historical) | School | 235 | Lake | 42 11 48 N | 088 01 59 W |
| Schumaier RLA Airport | Airport | 162 | Perry | 38 07 32 N | 089 27 55 W |
| Schumann Cemetery | Cemetery | 175 | Calhoun | 39 17 14 N | 090 36 35 W |
| Schurz High School | School | 184 | Cook | 41 56 51 N | 087 44 06 W |
| Schussler Park | Park | 209 | Cook | 41 37 34 N | 087 50 12 W |
| Schuths Grove | Woods | 188 | Cook | 41 51 02 N | 087 49 28 W |
| Schutt Cemetery | Cemetery | 173 | Hardin | 37 33 12 N | 088 22 10 W |
| Schuy-Rush Airport | Airport | 202 | Schuyler | 40 07 03 N | 090 35 25 W |
| Schuy-Rush Lake | Reservoir | 154 | Schuyler | 40 03 47 N | 090 33 14 W |
| Schuy-Rush Park | Park | 179 | Schuyler | 40 05 00 N | 090 33 10 W |
| Schuyler County | Civil | 206 | Schuyler | 40 09 00 N | 090 36 00 W |
| Schuyler County Courthouse | Building | 205 | Schuyler | 40 07 13 N | 090 33 50 W |
| Schuyler County Fairground | Park | 207 | Schuyler | 40 07 45 N | 090 33 35 W |
| Schwarms School (historical) | School | 162 | Fayette | 38 58 27 N | 089 00 43 W |
| Schwartz Church (historical) | Church | 226 | Vermilion | 40 25 43 N | 087 51 45 W |
| Schwebel Brothers Dam | Dam | 125 | St. Clair | 38 20 42 N | 089 54 48 W |
| Schwebel Lake | Reservoir | 125 | St. Clair | 38 20 42 N | 089 54 48 W |
| Schweitzer County Forest Park | Park | 268 | Kane | 42 06 25 N | 088 19 15 W |
| Schweizer School (historical) | School | 190 | Will | 41 27 51 N | 088 09 03 W |
| Schwer | Populated Place | 201 | Iroquois | 40 39 38 N | 087 47 17 W |
| Schwer Cemetery | Cemetery | 203 | Iroquois | 40 39 41 N | 087 47 12 W |
| SchwierJohn School (historical) | School | 143 | Clinton | 38 38 18 N | 089 24 01 W |
| Science Hall School (historical) | School | 232 | Warren | 40 59 33 N | 090 32 06 W |
| Science Hill School (historical) | School | 183 | Cass | 39 59 47 N | 090 05 51 W |
| Science Hill School (historical) | School | 195 | Fulton | 40 29 41 N | 090 05 12 W |
| Science Hill School (historical) | School | 204 | Morgan | 39 40 29 N | 090 07 47 W |
| Science Hill School (historical) | School | 216 | Vermilion | 40 28 19 N | 087 51 23 W |
| Science Hill School (historical) | School | 212 | Woodford | 40 36 53 N | 089 18 14 W |
| Science Research Center | Building | 178 | Cook | 41 53 36 N | 087 38 10 W |
| Science Ridge Mennonite Cemetery | Cemetery | 220 | Whiteside | 41 49 25 N | 089 40 43 W |
| Science Ridge Mennonite Church | Church | 220 | Whiteside | 41 49 24 N | 089 40 43 W |
| Science School (historical) | School | 156 | Jefferson | 38 11 51 N | 089 03 47 W |
| Sciota | Populated Place | 231 | McDonough | 40 33 39 N | 090 45 06 W |
| Scioto Mills | Populated Place | 239 | Stephenson | 42 21 23 N | 089 40 07 W |
| Scioto Mills Post Office | Post Office | 237 | Stephenson | 42 21 24 N | 089 40 09 W |
| Scioto School (historical) | School | 197 | Morgan | 39 32 10 N | 089 58 22 W |
| Scoggins Cemetery | Cemetery | 118 | Johnson | 37 21 53 N | 088 51 03 W |
| Scogin Hill Cemetery | Cemetery | 228 | McLean | 40 27 15 N | 089 02 22 W |
| Sconce Bend | Bend | 166 | Cumberland | 39 19 56 N | 088 08 41 W |
| Scotch Cemetery | Cemetery | 284 | Winnebago | 42 22 36 N | 088 56 28 W |
| Scotch Chapel School (historical) | School | 180 | Cumberland | 39 13 24 N | 088 10 19 W |
| Scotch School | School | 213 | Will | 41 39 54 N | 088 15 08 W |
| Scotchtown School (historical) | School | 229 | Warren | 40 55 11 N | 090 33 11 W |
| Scotland School (historical) | School | 223 | Peoria | 40 54 03 N | 089 53 21 W |
| Scotland School (historical) | School | 149 | Randolph | 38 12 07 N | 089 43 35 W |
| Scotland Townhall | Building | 208 | McDonough | 40 24 41 N | 090 37 08 W |
| Scotland Trinity Presbyterian Church | Church | 208 | McDonough | 40 24 40 N | 090 37 10 W |
| Scott Air Force Base Pond | Reservoir | 132 | St. Clair | 38 33 12 N | 089 50 24 W |
| Scott Air Force Base Pond Dam | Dam | 132 | St. Clair | 38 33 12 N | 089 50 24 W |
| Scott Avenue Christian Church | Church | 160 | Jasper | 38 59 11 N | 088 09 02 W |
| Scott Cemetery | Cemetery | 203 | Edgar | 39 38 44 N | 087 53 07 W |
| Scott Cemetery | Cemetery | 188 | Edgar | 39 43 02 N | 087 37 59 W |
| Scott Cemetery | Cemetery | 170 | Effingham | 38 57 14 N | 088 22 51 W |
| Scott Cemetery | Cemetery | 192 | Hancock | 40 18 28 N | 091 02 12 W |
| Scott Cemetery | Cemetery | 220 | Kendall | 41 42 42 N | 088 36 02 W |
| Scott Cemetery | Cemetery | 177 | McDonough | 40 17 58 N | 090 47 32 W |
| Scott Cemetery | Cemetery | 189 | Morgan | 39 42 52 N | 090 09 31 W |
| Scott Cemetery | Cemetery | 137 | Wayne | 38 31 07 N | 088 14 23 W |
| Scott Church | Church | 178 | McDonough | 40 17 55 N | 090 47 32 W |
| Scott County | Civil | 178 | Scott | 39 39 00 N | 090 28 00 W |
| Scott County Poor Farm (historical) | Locale | 160 | Scott | 39 37 37 N | 090 29 18 W |
| Scott County Pumping Station | Locale | 131 | Pike | 39 40 27 N | 090 37 49 W |
| Scott Elementary School | School | 195 | Cook | 41 55 11 N | 087 52 31 W |
| Scott Elementary School | School | 208 | DuPage | 41 43 51 N | 088 07 06 W |
| Scott Hall | Building | 225 | Champaign | 40 06 07 N | 088 14 12 W |
| Scott Hollow | Valley | | Greene | 39 25 42 N | 090 33 31 W |
| Scott Lake | Lake | 132 | St. Clair | 38 33 12 N | 089 50 32 W |
| Scott Lake Recreation Area | Locale | 133 | St. Clair | 38 33 07 N | 089 50 25 W |
| Scott Munitions Storage Annex (historical) | Military (Historical) | 131 | St. Clair | 38 31 07 N | 089 50 27 W |
| Scott Park | Park | 252 | Bureau | 41 17 44 N | 089 47 31 W |
| Scott Park | Park | 219 | Champaign | 40 06 43 N | 088 14 11 W |
| Scott School | School | 180 | Cook | 41 46 42 N | 087 35 18 W |
| Scott School | School | 135 | St. Clair | 38 33 29 N | 089 50 43 W |
| Scott School (historical) | Locale | 198 | Grundy | 41 07 20 N | 088 31 42 W |
| Scott School (historical) | School | 246 | Bureau | 41 17 34 N | 089 46 13 W |
| Scott School (historical) | School | 191 | Edgar | 39 43 50 N | 087 37 59 W |
| Scott School (historical) | School | 195 | Edgar | 39 50 43 N | 087 36 26 W |
| Scott School (historical) | School | 212 | Ford | 40 55 24 N | 088 11 16 W |
| Scott School (historical) | School | 193 | Kankakee | 41 02 03 N | 087 48 04 W |
| Scott School (historical) | School | 203 | Kendall | 41 28 19 N | 088 30 42 W |
| Scott School (historical) | School | 226 | Ogle | 42 08 12 N | 089 05 15 W |
| Scott School North | School | 137 | St. Clair | 38 33 37 N | 089 50 44 W |
| Scott Street Baptist Church | Church | 121 | Saline | 37 48 35 N | 088 27 07 W |
| Scottdale Park | Park | 235 | DuPage | 41 49 36 N | 088 04 48 W |
| Scottish Rite Cathedral | Church | 180 | Cook | 41 53 58 N | 087 37 46 W |
| Scottland | Populated Place | 194 | Edgar | 39 48 16 N | 087 36 18 W |
| Scotts | Populated Place | 203 | Edgar | 39 50 43 N | 087 39 46 W |
| Scotts Grove Park | Park | 234 | DuPage | 41 49 29 N | 088 04 46 W |
| Scotts Mill | Populated Place | 140 | Schuyler | 40 05 02 N | 090 42 18 W |
| Scotts Pond | Lake | 141 | St. Clair | 38 29 37 N | 089 57 13 W |
| Scottsburg | Populated Place | 202 | McDonough | 40 33 14 N | 090 35 37 W |
| Scottsburg School (historical) | School | 200 | McDonough | 40 33 28 N | 090 35 35 W |
| Scottsdale Branch Chicago Public Library | Building | 189 | Cook | 41 44 57 N | 087 43 29 W |
| Scottsdale Park | Park | 189 | Cook | 41 44 30 N | 087 44 08 W |
| Scottsville | Populated Place | 134 | Wayne | 38 19 45 N | 088 10 20 W |
| Scottsville School (historical) | School | 134 | Wayne | 38 19 46 N | 088 10 18 W |
| Scottville | Populated Place | 201 | Macoupin | 39 28 49 N | 090 06 17 W |
| Scottville Post Office | Post Office | 201 | Macoupin | 39 28 50 N | 090 06 15 W |
| Scottville West Cemetery | Cemetery | 180 | Macoupin | 39 29 21 N | 090 08 34 W |
| Scovel | Populated Place | 209 | Livingston | 40 54 42 N | 088 23 54 W |
| Scovil Hall | Building | 199 | Macon | 39 50 33 N | 088 58 37 W |
| Scovill Gardens | Park | 190 | Macon | 39 49 38 N | 088 54 45 W |
| Scovill Municipal Golf Course | Locale | 181 | Macon | 39 50 25 N | 089 01 05 W |
| Scoville Block | Building | 191 | Cook | 41 53 17 N | 087 47 38 W |