Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Dora LaCoutre Fashion Designing School | School | 179 | Cook | 41 44 40 N | 087 35 35 W |
| Doral Building | Building | 178 | Cook | 41 53 06 N | 087 37 27 W |
| Dorans | Populated Place | 207 | Coles | 39 33 04 N | 088 20 40 W |
| Dorchester | Populated Place | 200 | Macoupin | 39 05 08 N | 089 53 15 W |
| Dorchester and Grand Crossing Congregation of Jehovahs Witnesses Church | Church | 180 | Cook | 41 45 56 N | 087 35 32 W |
| Dorchester Commons Shopping Center | Locale | 180 | Cook | 41 47 59 N | 087 35 28 W |
| Dore Elementary School | School | 187 | Cook | 41 46 51 N | 087 47 16 W |
| Doremus Congregational Church | Church | 183 | Cook | 41 50 20 N | 087 38 19 W |
| Doris Westfall Prairie Restoration Nature Preserve | Park | 201 | Vermilion | 40 00 30 N | 087 33 57 W |
| Dorland Building | Building | 268 | DeKalb | 41 55 57 N | 088 46 51 W |
| Dorman School (historical) | School | 195 | Livingston | 41 03 54 N | 088 22 52 W |
| Dorman School (historical) | School | 187 | Macoupin | 39 10 47 N | 089 57 43 W |
| Dorn Primary Center | School | 189 | Cook | 41 43 28 N | 087 48 52 W |
| Dorner Drive Playing Fields | Park | 224 | Champaign | 40 06 09 N | 088 13 16 W |
| Dorothy Delacey Family Education Center | School | 262 | Kane | 42 07 59 N | 088 16 02 W |
| Dorothy Simon Elementary School | School | 269 | Winnebago | 42 15 44 N | 089 14 36 W |
| Dorr Hill School (historical) | School | 287 | Bureau | 41 14 56 N | 089 34 03 W |
| Dorrance Park | Park | 199 | Rock Island | 41 36 41 N | 090 19 50 W |
| Dorris Creek | Stream | | Bond | 38 54 01 N | 089 32 15 W |
| Dorris Elementary School | School | 165 | Madison | 38 40 52 N | 089 58 35 W |
| Dorris Heights | Populated Place | 114 | Saline | 37 44 58 N | 088 33 11 W |
| Dorrisville | Populated Place | 115 | Saline | 37 43 07 N | 088 32 38 W |
| Dorrisville School | School | 126 | Saline | 37 43 16 N | 088 33 16 W |
| Dorset Park | Park | 227 | DuPage | 41 49 47 N | 088 07 27 W |
| Dorsey | Populated Place | 179 | Madison | 38 58 25 N | 090 00 05 W |
| Dorsey Bridge | Bridge | 119 | Edwards | 38 30 31 N | 088 07 46 W |
| Dorsey Cemetery | Cemetery | 180 | Pike | 39 47 24 N | 090 44 30 W |
| Dorsey Emmaus Lutheran Cemetery | Cemetery | 174 | Madison | 38 59 10 N | 090 01 13 W |
| Dorsey School (historical) | School | 152 | Gallatin | 37 42 00 N | 088 17 56 W |
| Dorsey School (historical) | School | 178 | Madison | 38 59 07 N | 090 01 13 W |
| Dortch Private Strip | Airport | 115 | Gallatin | 37 39 37 N | 088 11 15 W |
| Dose School (historical) | School | 222 | La Salle | 41 10 39 N | 089 08 38 W |
| Doss Grave | Cemetery | 196 | Macoupin | 39 25 24 N | 089 56 10 W |
| Doty Cemetery | Cemetery | 216 | Coles | 39 25 50 N | 088 15 05 W |
| Doty Cemetery | Cemetery | 305 | Kane | 42 06 24 N | 088 29 26 W |
| Doty School (historical) | School | 209 | Coles | 39 27 10 N | 088 13 55 W |
| Doty School (historical) | School | 305 | Kane | 42 06 24 N | 088 29 22 W |
| Doty School (historical) | School | 231 | Ogle | 41 57 38 N | 089 37 40 W |
| Double Box School (historical) | School | 186 | Hardin | 37 29 42 N | 088 08 03 W |
| Double Branch Hole | Basin | 175 | Pope | 37 30 45 N | 088 35 30 W |
| Double Ridges School (historical) | School | 132 | Johnson | 37 29 44 N | 088 45 16 W |
| Doud Cemetery | Cemetery | 197 | Kendall | 41 40 11 N | 088 22 41 W |
| Doug Lee Park | Park | 130 | Jackson | 37 43 06 N | 089 11 48 W |
| Dougal Hollow | Valley | | Greene | 39 24 14 N | 090 33 34 W |
| Dougherty Cemetery | Cemetery | 185 | Jersey | 39 02 36 N | 090 23 24 W |
| Dougherty Cemetery | Cemetery | 198 | Vermilion | 40 04 17 N | 087 48 07 W |
| Dougherty Park | Park | 178 | Cook | 41 43 33 N | 087 33 36 W |
| Dougherty Residence Hall | Building | 210 | Lake | 42 14 06 N | 087 49 53 W |
| Doughnut Lake | Lake | 216 | Cook | 42 06 20 N | 088 00 45 W |
| Doughnut Pond | Lake | 166 | Vermilion | 40 06 23 N | 087 44 36 W |
| Douglas | Populated Place | 196 | Knox | 40 47 10 N | 090 05 03 W |
| Douglas | Populated Place | 141 | St. Clair | 38 25 28 N | 089 58 57 W |
| Douglas - Tubman Christian Center | Church | 183 | Cook | 41 47 41 N | 087 37 37 W |
| Douglas (subdivision) | Populated Place | 182 | Cook | 41 50 05 N | 087 37 05 W |
| Douglas Airport | Airport | 197 | Hancock | 40 34 35 N | 091 06 11 W |
| Douglas Cemetery | Cemetery | 122 | Massac | 37 11 11 N | 088 36 13 W |
| Douglas Cemetery | Cemetery | 193 | Pike | 39 34 33 N | 090 38 09 W |
| Douglas Community Academy (historical) | School | 182 | Cook | 41 50 10 N | 087 37 08 W |
| Douglas County | Civil | 197 | Douglas | 39 46 00 N | 088 13 00 W |
| Douglas County Agricultural Center | Building | 200 | Douglas | 39 47 26 N | 088 17 23 W |
| Douglas County Courthouse | Building | 199 | Douglas | 39 47 44 N | 088 17 06 W |
| Douglas County Museum | Building | 198 | Douglas | 39 47 33 N | 088 17 16 W |
| Douglas Creek | Stream | | Mercer | 41 08 22 N | 090 48 45 W |
| Douglas Creek | Stream | | Richland | 38 50 38 N | 087 57 56 W |
| Douglas Creek | Stream | | St. Clair | 38 23 55 N | 089 58 04 W |
| Douglas E Wade Nature Preserve | Park | 237 | Ogle | 42 07 57 N | 089 12 29 W |
| Douglas Elementary School | School | 213 | Bureau | 41 22 58 N | 089 27 40 W |
| Douglas Elementary School | School | 221 | De Witt | 40 09 10 N | 088 57 00 W |
| Douglas Hall | Building | 267 | DeKalb | 41 56 11 N | 088 46 35 W |
| Douglas Institute (historical) | School | 199 | Morgan | 39 39 28 N | 090 14 43 W |
| Douglas Lake | Lake | 134 | Marshall | 40 54 52 N | 089 27 04 W |
| Douglas Mine | Mine | 126 | Pope | 37 31 06 N | 088 25 24 W |
| Douglas Monument Park | Park | 183 | Cook | 41 49 53 N | 087 36 30 W |
| Douglas Park | Park | 226 | Champaign | 40 07 29 N | 088 13 48 W |
| Douglas Park | Park | 258 | Cook | 42 05 23 N | 088 07 39 W |
| Douglas Park | Park | 178 | Cook | 41 51 39 N | 087 41 55 W |
| Douglas Park | Park | 177 | Rock Island | 41 29 44 N | 090 35 06 W |
| Douglas Park | Park | 178 | Sangamon | 39 48 24 N | 089 40 00 W |
| Douglas Park | Park | 182 | Vermilion | 40 07 03 N | 087 36 49 W |
| Douglas Park | Populated Place | 200 | Whiteside | 41 47 38 N | 089 44 04 W |
| Douglas Park Baptist Church | Church | 182 | Cook | 41 51 21 N | 087 42 20 W |
| Douglas Park Church of the Brethren | Church | 181 | Cook | 41 51 31 N | 087 41 43 W |
| Douglas Park Church of the Nazarene | Church | 181 | Vermilion | 40 07 12 N | 087 37 17 W |
| Douglas Park Evangelical Covenant Church | Church | 183 | Cook | 41 51 04 N | 087 41 42 W |
| Douglas Park School | School | 182 | Vermilion | 40 07 08 N | 087 36 55 W |
| Douglas Public School (historical) | School | 96 | Alexander | 37 00 03 N | 089 10 20 W |
| Douglas Public School (historical) | School | 140 | Franklin | 37 59 44 N | 088 54 31 W |
| Douglas Public School (historical) | School | 157 | Madison | 38 53 48 N | 090 11 03 W |
| Douglas School | School | 116 | Jackson | 37 45 37 N | 089 20 03 W |
| Douglas School | School | 238 | Knox | 40 56 12 N | 090 21 51 W |
| Douglas School | School | 155 | Peoria | 40 41 15 N | 089 36 06 W |
| Douglas School | School | 180 | Sangamon | 39 48 21 N | 089 39 41 W |
| Douglas School | School | 162 | St. Clair | 38 30 55 N | 089 57 53 W |
| Douglas School | School | 159 | Tazewell | 40 34 00 N | 089 38 12 W |
| Douglas School (historical) | School | 217 | Adams | 39 53 35 N | 091 11 08 W |
| Douglas School (historical) | School | 232 | Bureau | 41 15 23 N | 089 46 03 W |
| Douglas School (historical) | School | 191 | Christian | 39 27 31 N | 089 20 11 W |
| Douglas School (historical) | School | 192 | Fulton | 40 34 31 N | 089 58 11 W |
| Douglas School (historical) | School | 165 | Greene | 39 18 23 N | 090 12 30 W |
| Douglas School (historical) | School | 213 | Hancock | 40 30 23 N | 091 14 12 W |
| Douglas School (historical) | School | 207 | Hancock | 40 19 13 N | 091 07 15 W |
| Douglas School (historical) | School | 166 | Hardin | 37 31 56 N | 088 10 00 W |
| Douglas School (historical) | School | 174 | Henderson | 41 03 22 N | 090 52 24 W |
| Douglas School (historical) | School | 205 | Jackson | 37 50 35 N | 089 34 35 W |
| Douglas School (historical) | School | 169 | Jersey | 39 04 59 N | 090 23 27 W |
| Douglas School (historical) | School | 192 | Macoupin | 39 23 29 N | 089 54 41 W |
| Douglas School (historical) | School | 193 | Menard | 40 03 58 N | 089 39 06 W |
| Douglas School (historical) | School | 196 | Pike | 39 34 33 N | 090 37 08 W |
| Douglas School (historical) | School | 206 | Shelby | 39 27 01 N | 089 00 37 W |
| Douglas School (historical) | School | 143 | St. Clair | 38 26 08 N | 089 58 57 W |