Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Dick Pond | Lake | 110 | White | 38 07 05 N | 088 00 45 W |
| Dick School (historical) | School | 149 | Cass | 40 03 38 N | 090 04 14 W |
| Dick School (historical) | School | 217 | Livingston | 40 56 57 N | 088 27 10 W |
| Dick Woods Branch | Stream | | Morgan | 39 42 53 N | 090 10 35 W |
| Dick Young County Forest Preserve | Park | 217 | Kane | 41 50 10 N | 088 22 20 W |
| Dickenson School (historical) | School | 256 | Winnebago | 42 18 45 N | 089 12 49 W |
| Dickerson | Populated Place | 226 | Champaign | 40 19 06 N | 088 25 20 W |
| Dickerson Cemetery | Cemetery | 150 | Crawford | 38 53 47 N | 087 37 34 W |
| Dickerson Slough | Stream | | Champaign | 40 21 36 N | 088 19 22 W |
| Dickeson Cemetery | Cemetery | 201 | Peoria | 40 49 54 N | 089 41 47 W |
| Dickey School (historical) | School | 196 | Douglas | 39 44 02 N | 088 13 55 W |
| Dickey School (historical) | School | 214 | Henry | 41 20 39 N | 090 01 14 W |
| Dickey School (historical) | School | 138 | Washington | 38 14 55 N | 089 40 20 W |
| Dickeys | Populated Place | 202 | Kankakee | 41 03 03 N | 088 02 14 W |
| Dickinson House Community Building | Building | 194 | La Salle | 41 17 27 N | 089 03 36 W |
| Dickinson Park | Park | 187 | Cook | 41 57 20 N | 087 45 07 W |
| Dickinson School (historical) | School | 263 | Kane | 42 07 55 N | 088 15 26 W |
| Dickison Run | Stream | | Peoria | 40 49 25 N | 089 33 16 W |
| Dicks Creek | Stream | | Cumberland | 39 21 33 N | 088 17 09 W |
| Dickson Cemetery | Cemetery | 208 | Fulton | 40 36 43 N | 090 14 06 W |
| Dickson Cemetery | Cemetery | 214 | Rock Island | 41 28 07 N | 090 34 42 W |
| Dickson Creek | Stream | | Fulton | 40 19 24 N | 090 05 13 W |
| Dickson Mounds State Park | Park | 166 | Fulton | 40 21 01 N | 090 06 56 W |
| Dickson Park | Park | 174 | Rock Island | 41 27 02 N | 090 33 45 W |
| Dickson School (historical) | School | 211 | Fulton | 40 36 38 N | 090 13 46 W |
| Diebert-Hortsman Dam | Dam | 148 | Clinton | 38 37 54 N | 089 39 36 W |
| Diebert-Hortsman Lake | Reservoir | 148 | Clinton | 38 37 54 N | 089 39 36 W |
| Diedrich Airport | Airport | 265 | DeKalb | 41 52 23 N | 088 50 06 W |
| Diedrich Park | Park | 197 | Cook | 42 03 24 N | 087 47 45 W |
| Dieffenbacher School (historical) | School | 154 | Mason | 40 17 22 N | 089 57 44 W |
| Diehl School (historical) | School | 201 | La Salle | 41 15 31 N | 088 54 50 W |
| Diekman Elementary School | School | 184 | Cook | 41 37 12 N | 087 34 56 W |
| Diel Cemetery | Cemetery | 173 | Jasper | 39 08 41 N | 088 15 10 W |
| Diercks School (historical) | School | 264 | Kane | 42 09 02 N | 088 15 26 W |
| Dierker Lake | Lake | 132 | Mason | 40 13 18 N | 090 07 39 W |
| Diesel Truck Driver Training School | School | 186 | Cook | 41 57 00 N | 087 44 49 W |
| Dietchweiler Airport | Airport | 194 | Iroquois | 40 46 42 N | 087 47 30 W |
| Dieter School (historical) | School | 200 | Iroquois | 40 53 53 N | 088 02 02 W |
| Dieterich | Populated Place | 179 | Effingham | 39 03 43 N | 088 22 47 W |
| Dieterich Cemetery | Cemetery | 182 | Effingham | 39 02 43 N | 088 22 50 W |
| Dieterich Creek | Stream | | Effingham | 39 01 46 N | 088 26 54 W |
| Dieterich Elementary School | School | 179 | Effingham | 39 03 28 N | 088 22 55 W |
| Dieterich Junior-Senior High School | School | 179 | Effingham | 39 03 26 N | 088 22 57 W |
| Dieterich Post Office | Post Office | 177 | Effingham | 39 03 32 N | 088 22 49 W |
| Dietz School (historical) | School | 234 | Livingston | 40 41 23 N | 088 17 06 W |
| Diffenbaugh-Harmon Park | Park | 232 | Warren | 40 55 08 N | 090 39 09 W |
| Digby Cemetery | Cemetery | 132 | Hamilton | 38 00 12 N | 088 29 24 W |
| Diggins School (historical) | School | 253 | McHenry | 42 16 11 N | 088 34 08 W |
| Dighton School (historical) | School | 203 | Piatt | 40 02 52 N | 088 33 11 W |
| Dillehay Park | Park | 276 | Ogle | 42 02 30 N | 089 25 37 W |
| Dillinger Cemetery | Cemetery | 119 | Jackson | 37 46 01 N | 089 13 36 W |
| Dillingham Church | Church | 137 | Williamson | 37 49 36 N | 088 44 09 W |
| Dillman Cemetery | Cemetery | 136 | Clay | 38 45 47 N | 088 22 44 W |
| Dillon | Populated Place | 191 | Tazewell | 40 28 36 N | 089 32 17 W |
| Dillon Bend | Bend | 104 | Jackson | 37 38 28 N | 089 25 21 W |
| Dillon Branch | Stream | | Vermilion | 39 54 01 N | 087 46 49 W |
| Dillon Cemetery | Cemetery | 192 | Tazewell | 40 29 16 N | 089 32 09 W |
| Dillon Creek | Stream | | Tazewell | 40 27 02 N | 089 35 00 W |
| Dillon Elementary School | School | 195 | Whiteside | 41 45 48 N | 089 42 01 W |
| Dillon Home Museum | Building | 203 | Whiteside | 41 47 29 N | 089 40 51 W |
| Dillon Island | Island | 145 | Adams | 40 06 34 N | 091 29 39 W |
| Dillon Park | Park | 183 | Cook | 41 42 33 N | 087 44 41 W |
| Dillon Park | Park | 193 | Whiteside | 41 45 48 N | 089 42 10 W |
| Dillon Quarry | Mine | 204 | Livingston | 40 47 35 N | 088 37 40 W |
| Dillon Townhall | Building | 164 | Tazewell | 40 26 15 N | 089 32 52 W |
| Dillonfield | Populated Place | 248 | Kane | 41 53 48 N | 088 24 50 W |
| Dillsburg | Populated Place | 224 | Champaign | 40 18 59 N | 088 04 46 W |
| Dillys Corners | Locale | 226 | Lake | 42 22 43 N | 087 56 20 W |
| Dimmick | Populated Place | 201 | La Salle | 41 26 25 N | 089 06 59 W |
| Dimmick Community Consolidated School | School | 200 | La Salle | 41 24 42 N | 089 06 26 W |
| Dimmick Mine | Mine | 124 | Hardin | 37 26 30 N | 088 20 42 W |
| Dimmick Pit | Mine | 189 | La Salle | 41 26 10 N | 089 05 27 W |
| Dimmick School (historical) | School | 199 | La Salle | 41 17 39 N | 088 58 18 W |
| Dimon School (historical) | School | 238 | Carroll | 42 03 56 N | 089 50 12 W |
| Dimucci Park | Park | 202 | Cook | 42 03 33 N | 087 55 14 W |
| Dingeldine Hall | Building | 183 | Peoria | 40 41 43 N | 089 36 56 W |
| Dinkmeyer Hall | Building | 212 | DuPage | 41 53 44 N | 087 56 54 W |
| Diocesan Pastoral Center | Building | 185 | St. Clair | 38 32 36 N | 089 56 01 W |
| Diocesan School | School | 177 | Sangamon | 39 42 08 N | 089 35 34 W |
| Diona | Populated Place | 188 | Coles | 39 22 36 N | 088 08 21 W |
| Diorio Park | Park | 207 | DuPage | 41 57 03 N | 087 56 43 W |
| Dirksen Elementary School | School | 195 | Will | 41 31 06 N | 088 07 00 W |
| Dirksen Federal Building | Building | 182 | Cook | 41 52 44 N | 087 37 44 W |
| Dirksen Middle School | School | 183 | Cook | 41 37 00 N | 087 33 55 W |
| Disbrow School (historical) | Locale | 213 | Macon | 39 55 09 N | 089 01 41 W |
| Disciples Divinity House of the University of Chicago | Building | 180 | Cook | 41 47 30 N | 087 35 49 W |
| Disciples of Christ Bible Mission | Church | 185 | Cook | 41 41 50 N | 087 37 14 W |
| Disciples United Methodist Church | Church | 275 | Ogle | 42 02 59 N | 089 26 42 W |
| Disco | Populated Place | 204 | Hancock | 40 37 13 N | 091 01 17 W |
| Discovery Center | School | 182 | Cook | 41 56 06 N | 087 39 45 W |
| Discovery Park | Park | 216 | Cook | 41 34 32 N | 087 53 55 W |
| Discovery Park | Park | 248 | DuPage | 41 57 31 N | 088 08 50 W |
| Dismal Creek | Stream | | Clay | 38 49 08 N | 088 32 52 W |
| Disney Magnet Elementary School | School | 180 | Cook | 41 57 25 N | 087 38 49 W |
| Disney Park | Park | 213 | Cook | 42 00 07 N | 088 00 35 W |
| Disosway Airport | Airport | 208 | Iroquois | 40 42 00 N | 087 36 00 W |
| Distillery Hollow | Valley | | Adams | 39 51 52 N | 091 23 21 W |
| Distillery Hollow | Valley | | Jersey | 38 58 07 N | 090 26 10 W |
| District Number 16 State Police Headquarters | Locale | 271 | Winnebago | 42 17 11 N | 089 21 29 W |
| District Number 5 State Police Headquarters | Building | 185 | Will | 41 34 57 N | 088 04 56 W |
| Diswood | Populated Place | 110 | Alexander | 37 13 53 N | 089 19 22 W |
| Ditch Number 10 | Canal | 183 | Henry | 41 28 05 N | 089 57 27 W |
| Ditch Number 2 | Canal | 183 | Henry | 41 27 24 N | 089 56 35 W |
| Ditch Number 2 | Canal | 126 | Lawrence | 38 45 43 N | 087 33 18 W |
| Ditch Number 3 | Canal | 183 | Henry | 41 27 40 N | 089 57 10 W |
| Ditch Number 3 | Canal | 207 | Macon | 39 51 23 N | 088 38 57 W |
| Ditch Number 4 | Canal | 201 | Bureau | 41 25 35 N | 089 40 44 W |
| Ditch Number 4 | Canal | 183 | Henry | 41 28 14 N | 089 56 18 W |
| Ditch Number 4 | Canal | 204 | Piatt | 39 49 51 N | 088 37 11 W |
| Ditch Number 5 | Canal | 210 | Bureau | 41 28 37 N | 089 39 22 W |