Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Shad Hill School (historical) | School | 226 | Fulton | 40 40 02 N | 090 04 16 W |
| Shad Lake | Reservoir | 188 | Macoupin | 39 06 40 N | 089 58 12 W |
| Shad Lake Dam | Dam | 188 | Macoupin | 39 06 40 N | 089 58 12 W |
| Shadbush Picnic Area | Locale | 158 | Jasper | 39 01 40 N | 088 07 31 W |
| Shadden Cemetery | Cemetery | 157 | Marion | 38 40 03 N | 088 42 47 W |
| Shadden School (historical) | School | 154 | Marion | 38 40 05 N | 088 43 00 W |
| Shadow Bluff | Cliff | 141 | La Salle | 41 20 19 N | 088 49 37 W |
| Shadow Lake | Lake | 172 | Henry | 41 32 45 N | 090 10 21 W |
| Shadow Lawn | Populated Place | 191 | Kankakee | 41 09 35 N | 087 34 18 W |
| Shadrach | Reservoir | 192 | Macoupin | 39 06 42 N | 089 57 52 W |
| Shady Acres | Populated Place | 138 | Morgan | 39 50 50 N | 090 33 16 W |
| Shady Beach | Populated Place | 190 | Henry | 41 32 20 N | 090 11 48 W |
| Shady Cove Picnic Area | Locale | 136 | Jackson | 37 46 38 N | 089 22 34 W |
| Shady Crest Orchard | Woods | 201 | Moultrie | 39 42 07 N | 088 28 32 W |
| Shady Eighty Acres Lake | Reservoir | 150 | Greene | 39 17 36 N | 090 12 18 W |
| Shady Eighty Acres Lake Dam | Dam | 150 | Greene | 39 17 36 N | 090 12 18 W |
| Shady Grove | Populated Place | 105 | Massac | 37 07 26 N | 088 33 57 W |
| Shady Grove Campground | Locale | 190 | Shelby | 39 19 05 N | 088 40 56 W |
| Shady Grove Picnic Area | Locale | 189 | Fayette | 39 09 36 N | 089 07 38 W |
| Shady Grove School (historical) | School | 172 | Bond | 38 55 50 N | 089 28 33 W |
| Shady Grove School (historical) | School | 204 | Coles | 39 35 25 N | 088 01 33 W |
| Shady Grove School (historical) | School | 142 | Fayette | 38 45 15 N | 089 12 44 W |
| Shady Grove School (historical) | School | 141 | Hamilton | 38 06 33 N | 088 37 16 W |
| Shady Grove School (historical) | School | 156 | Jefferson | 38 13 45 N | 088 49 57 W |
| Shady Grove School (historical) | School | 207 | Macon | 39 46 40 N | 088 56 36 W |
| Shady Grove School (historical) | School | 119 | Massac | 37 13 35 N | 088 41 14 W |
| Shady Grove School (historical) | School | 138 | Richland | 38 48 12 N | 088 07 33 W |
| Shady Lake | Lake | 181 | Macon | 39 50 20 N | 089 00 10 W |
| Shady Lake | Lake | 148 | Wayne | 38 24 22 N | 088 21 11 W |
| Shady Lane Resort Lake | Reservoir | 207 | Lake | 42 17 06 N | 087 54 13 W |
| Shady Lane School (historical) | School | 172 | Fayette | 39 12 35 N | 088 56 23 W |
| Shady Lawn Golf Course | Locale | 219 | Will | 41 20 40 N | 087 36 52 W |
| Shady Oak Park | Park | 194 | Macoupin | 39 04 17 N | 089 51 31 W |
| Shady Oaks Camp | Locale | 235 | Will | 41 35 31 N | 087 57 11 W |
| Shady Oaks Park | Park | 238 | Cook | 42 01 08 N | 088 10 43 W |
| Shady Rest Campground | Locale | 124 | Jackson | 37 47 07 N | 089 23 08 W |
| Shady Rest Picnic Area | Locale | 140 | Hamilton | 38 03 30 N | 088 23 56 W |
| Shady Town Cemetery | Cemetery | 189 | Whiteside | 41 37 53 N | 090 00 22 W |
| Shadybrook Park | Park | 184 | Rock Island | 41 26 11 N | 090 34 42 W |
| Shadydale School (historical) | School | 193 | Pike | 39 45 09 N | 090 46 50 W |
| Shadyside School (historical) | School | 223 | Mercer | 41 05 16 N | 090 34 08 W |
| Shaeffer Cemetery | Cemetery | 136 | Wayne | 38 21 17 N | 088 20 39 W |
| Shaeffer Cemetery | Cemetery | 130 | Wayne | 38 22 58 N | 088 21 19 W |
| Shaeffer School (historical) | School | 147 | Wayne | 38 21 15 N | 088 21 00 W |
| Shafer Metro East Airport | Airport | 144 | Madison | 38 43 58 N | 089 48 23 W |
| Shaffer Creek | Stream | | Rock Island | 41 27 14 N | 090 26 57 W |
| Shaffer Hollow | Valley | | Greene | 39 17 49 N | 090 32 59 W |
| Shaft Pond | Lake | 170 | Sangamon | 39 51 08 N | 089 31 46 W |
| Shafter | Populated Place | 172 | Fayette | 39 00 49 N | 089 11 06 W |
| Shag Bark Farms Heliport | Airport | 173 | Sangamon | 39 42 13 N | 089 44 56 W |
| Shag Lake Nature Preserve Park | Park | 235 | Lake | 42 23 06 N | 088 06 34 W |
| Shagbark Lake | Lake | 190 | Cook | 42 01 42 N | 087 52 37 W |
| Shake Rag School (historical) | School | 190 | Hancock | 40 30 07 N | 091 02 19 W |
| Shakerag | Populated Place | 134 | Williamson | 37 49 20 N | 088 54 32 W |
| Shakerag School (historical) | School | 131 | Hamilton | 37 54 25 N | 088 35 44 W |
| Shakerag School (historical) | School | 180 | Jersey | 39 08 42 N | 090 23 24 W |
| Shakerag School (historical) | School | 138 | Perry | 38 03 14 N | 089 17 17 W |
| Shakespeare Elementary School | School | 181 | Cook | 41 48 40 N | 087 35 53 W |
| Shakespeare Garden | Park | 182 | Cook | 42 03 23 N | 087 40 36 W |
| Shale Bluff | Populated Place | 176 | Sangamon | 39 46 37 N | 089 36 35 W |
| Shale City | Populated Place | 220 | Mercer | 41 13 11 N | 090 38 26 W |
| Shalom Center of the Assemblies of God | Church | 184 | Cook | 42 01 10 N | 087 41 52 W |
| Shalom Fellowship Church | Church | 175 | Adams | 39 56 31 N | 091 24 37 W |
| Shalom Memorial Park | Cemetery | 222 | Cook | 42 07 37 N | 088 00 02 W |
| Shambolee Golf Club | Locale | 183 | Menard | 39 58 56 N | 089 52 11 W |
| Shamrock | Populated Place | 165 | Jasper | 38 53 27 N | 088 11 14 W |
| Shamrock | Populated Place | 268 | McLean | 40 25 07 N | 088 53 58 W |
| Shamual Manor Nursing Home | Building | 165 | Menard | 39 59 33 N | 089 49 37 W |
| Shanafelt School | School | 167 | Marion | 38 37 21 N | 088 59 45 W |
| Shanahan Industrial Park | Locale | 231 | Kane | 41 54 35 N | 088 16 12 W |
| Shandrew Island | Island | 145 | Adams | 40 04 14 N | 091 28 30 W |
| Shane Cemetery | Cemetery | 125 | Gallatin | 37 54 04 N | 088 22 08 W |
| Shane School (historical) | School | 218 | Peoria | 40 51 49 N | 089 51 40 W |
| Shanghai City | Populated Place | 220 | Warren | 41 03 03 N | 090 29 48 W |
| Shanghai School (historical) | School | 171 | Marion | 38 48 35 N | 088 52 04 W |
| Shanghai School (historical) | School | 184 | McDonough | 40 18 35 N | 090 47 34 W |
| Shank School (historical) | School | 229 | Brown | 40 03 29 N | 090 53 03 W |
| Shanklin School (historical) | School | 183 | Greene | 39 28 22 N | 090 18 09 W |
| Shanks Hill | Summit | 181 | Greene | 39 11 19 N | 090 24 42 W |
| Shannon | Populated Place | 279 | Carroll | 42 09 17 N | 089 44 23 W |
| Shannon Baptist Church | Church | 279 | Carroll | 42 09 21 N | 089 44 38 W |
| Shannon Bridge (historical) | Bridge | 118 | Wayne | 38 32 41 N | 088 12 12 W |
| Shannon Center | Building | 189 | Cook | 41 42 25 N | 087 42 57 W |
| Shannon City Hall | Building | 279 | Carroll | 42 09 16 N | 089 44 20 W |
| Shannon School (historical) | School | 252 | Boone | 42 09 52 N | 088 50 10 W |
| Shannon School (historical) | School | 218 | Iroquois | 40 33 38 N | 088 02 14 W |
| Shantytown (subdivision) | Populated Place | 180 | Cook | 41 53 35 N | 087 37 15 W |
| Sharkey School (historical) | School | 243 | Bureau | 41 11 33 N | 089 37 14 W |
| Sharon Cemetery | Cemetery | 168 | Fayette | 39 02 33 N | 089 05 35 W |
| Sharon Cemetery | Cemetery | 202 | Macon | 39 50 35 N | 089 01 20 W |
| Sharon Cemetery | Cemetery | 201 | Vermilion | 39 56 57 N | 087 37 54 W |
| Sharon Church | Church | 208 | Macon | 39 51 38 N | 089 01 41 W |
| Sharon Church | Church | 153 | White | 38 02 07 N | 088 19 45 W |
| Sharon Church | Church | 206 | Whiteside | 41 36 41 N | 090 04 30 W |
| Sharon Church (historical) | Church | 141 | Clay | 38 45 01 N | 088 26 02 W |
| Sharon Church Cemetery | Cemetery | 205 | Whiteside | 41 36 42 N | 090 04 22 W |
| Sharon Park | Park | 195 | Lake | 42 26 16 N | 087 50 13 W |
| Sharon Post Office (historical) | Post Office | 188 | Henry | 41 33 18 N | 090 06 52 W |
| Sharon School | School | 170 | Jackson | 37 42 19 N | 089 19 53 W |
| Sharon School (historical) | School | 147 | Clinton | 38 34 58 N | 089 40 37 W |
| Sharon United Methodist Church | Church | 187 | Will | 41 36 30 N | 088 12 02 W |
| Sharp Cemetery | Cemetery | 162 | Clinton | 38 32 56 N | 089 24 33 W |
| Sharp Corner School | School | 192 | Cook | 42 03 00 N | 087 44 41 W |
| Sharp Rock Falls Campground | Locale | 130 | Jackson | 37 50 31 N | 089 29 17 W |
| Sharp School (historical) | Locale | 202 | Livingston | 41 05 35 N | 088 31 41 W |
| Sharps Grove (historical) | Woods | 228 | Ford | 40 30 31 N | 088 14 16 W |
| Sharps Landing | Locale | 133 | Schuyler | 40 09 09 N | 090 16 35 W |
| Sharps School (historical) | School | 184 | Christian | 39 36 03 N | 089 17 56 W |
| Sharpsburg | Populated Place | 183 | Christian | 39 36 50 N | 089 21 04 W |
| Sharpsburg School (historical) | School | 181 | Christian | 39 37 36 N | 089 20 41 W |