Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Childrens Campus | School | 196 | Cook | 42 00 43 N | 087 48 31 W |
| Childrens Center Clinical School | School | 207 | Tazewell | 40 38 49 N | 089 35 58 W |
| Childrens Home of Vermilion County | Building | 187 | Vermilion | 40 08 06 N | 087 38 44 W |
| Childrens Hospital | Hospital | 183 | Cook | 41 55 33 N | 087 38 48 W |
| Childrens Hour Pre-School Center | School | 184 | Cook | 41 45 49 N | 087 39 50 W |
| Childrens House Preschool | School | 183 | Cook | 41 45 02 N | 087 39 17 W |
| Childrens Memorial Hospital | Hospital | 182 | Cook | 41 55 29 N | 087 38 50 W |
| Childrens Memorial Hospital Heliport | Airport | 183 | Cook | 41 55 32 N | 087 38 47 W |
| Childrens Park | Park | 218 | Lake | 42 10 17 N | 087 59 15 W |
| Childress School (historical) | School | 210 | Coles | 39 34 05 N | 088 00 06 W |
| Chili | Populated Place | 208 | Hancock | 40 13 04 N | 091 08 30 W |
| Chili Cemetery | Cemetery | 204 | Hancock | 40 13 12 N | 091 08 29 W |
| Chili Center School (historical) | School | 207 | Hancock | 40 14 18 N | 091 05 01 W |
| Chillicothe | Populated Place | 152 | Peoria | 40 55 20 N | 089 29 10 W |
| Chillicothe Assembly of God Church | Church | 153 | Peoria | 40 55 19 N | 089 29 14 W |
| Chillicothe Bible Church | Church | 154 | Peoria | 40 55 37 N | 089 29 13 W |
| Chillicothe Christian Church | Church | 153 | Peoria | 40 54 39 N | 089 29 35 W |
| Chillicothe City Cemetery | Cemetery | 153 | Peoria | 40 54 30 N | 089 29 39 W |
| Chillicothe Fire Station Number two | Building | 159 | Peoria | 40 55 17 N | 089 30 04 W |
| Chillicothe Island | Island | 135 | Woodford | 40 54 39 N | 089 28 42 W |
| Chillicothe Junior High School | School | 161 | Peoria | 40 55 18 N | 089 29 48 W |
| Chillicothe Police Station | Building | 146 | Peoria | 40 54 57 N | 089 29 09 W |
| Chillicothe Post Office | Post Office | 146 | Peoria | 40 55 07 N | 089 29 03 W |
| Chillicothe Public Library | Building | 146 | Peoria | 40 54 57 N | 089 29 08 W |
| Chillicothe Station | Locale | 156 | Peoria | 40 55 49 N | 089 29 42 W |
| Chillocothe Fire Station | Building | 148 | Peoria | 40 55 07 N | 089 29 08 W |
| Chimney Rock | Pillar | 178 | Union | 37 31 48 N | 089 02 58 W |
| Chinatown | Populated Place | 183 | Cook | 41 51 06 N | 087 37 45 W |
| Chinatown | Populated Place | 178 | Madison | 38 43 37 N | 089 56 49 W |
| Chinatown City Hall | Building | 182 | Cook | 41 51 08 N | 087 37 56 W |
| Chinatown Square | Park | 181 | Cook | 41 51 15 N | 087 38 00 W |
| Chinese Christian Church | Church | 181 | Cook | 41 59 28 N | 087 40 05 W |
| Chinese Christian Union Church | Church | 181 | Cook | 41 51 02 N | 087 37 54 W |
| Chino Park | Park | 243 | Cook | 42 02 23 N | 088 05 02 W |
| Chinquapin Bridge (historical) | Bridge | 152 | Sangamon | 39 52 11 N | 089 40 19 W |
| Chipilly Woods | Woods | 201 | Cook | 42 08 16 N | 087 48 10 W |
| Chipman School (historical) | School | 209 | Kankakee | 41 11 35 N | 087 39 47 W |
| Chipmunk Trail | Trail | 157 | Clinton | 38 36 50 N | 089 20 13 W |
| Chippewa | Populated Place | 280 | Kane | 42 01 17 N | 088 24 54 W |
| Chippewa Elementary School | School | 182 | Cook | 41 39 56 N | 087 46 03 W |
| Chippewa Estates Dam | Dam | 223 | Peoria | 40 54 12 N | 089 47 48 W |
| Chippewa Estates Lake | Reservoir | 223 | Peoria | 40 54 12 N | 089 47 48 W |
| Chippewa Middle School | School | 198 | Cook | 42 03 19 N | 087 54 29 W |
| Chippewa Park | Park | 184 | Cook | 42 01 05 N | 087 44 02 W |
| Chippewa Park | Park | 197 | Cook | 42 03 25 N | 087 54 28 W |
| Chippewa Park | Park | 181 | Cook | 42 00 13 N | 087 42 20 W |
| Chippewa School | School | 201 | DuPage | 41 56 57 N | 087 55 22 W |
| Chippiannock Cemetery | Cemetery | 213 | Rock Island | 41 28 56 N | 090 34 43 W |
| Chipps | Populated Place | 199 | Moultrie | 39 37 59 N | 088 34 52 W |
| Chisel Lake | Lake | 129 | Pike | 39 48 39 N | 090 35 41 W |
| Chisholm School (historical) | School | 194 | Macoupin | 39 19 29 N | 089 54 40 W |
| Chism Cemetery | Cemetery | 162 | Macoupin | 39 16 07 N | 090 08 07 W |
| Chittenden (subdivision) | Populated Place | 207 | Lake | 42 22 42 N | 087 53 53 W |
| Chitty Cemetery | Cemetery | | Williamson | 37 36 41 N | 089 02 36 W |
| Chitty Cemetery | Cemetery | 189 | Williamson | 37 36 41 N | 089 02 34 W |
| Chittyville | Populated Place | 119 | Williamson | 37 49 46 N | 089 01 40 W |
| Chittyville Public School (historical) | School | 118 | Williamson | 37 50 01 N | 089 01 17 W |
| Chivler Creek | Stream | | Cumberland | 39 14 29 N | 088 05 53 W |
| Choat | Populated Place | 114 | Massac | 37 12 48 N | 088 47 55 W |
| Choate Cemetery | Cemetery | 205 | Johnson | 37 31 38 N | 088 51 21 W |
| Choate Mental Health and Development Center | Hospital | 182 | Union | 37 28 44 N | 089 14 32 W |
| Chockley Cemetery | Cemetery | 198 | McDonough | 40 17 48 N | 090 31 54 W |
| Chocktaw School (historical) | School | 193 | Douglas | 39 44 46 N | 088 07 30 W |
| Choctaw | Populated Place | 175 | Clark | 39 16 56 N | 087 43 17 W |
| Choctaw School (historical) | School | 175 | Clark | 39 16 56 N | 087 43 15 W |
| Choi Karate Institute | School | 184 | Cook | 41 56 45 N | 087 44 08 W |
| Cholera Cemetery | Cemetery | 232 | Edgar | 39 32 47 N | 087 50 46 W |
| Chopin Elementary School | School | 183 | Cook | 41 53 49 N | 087 41 18 W |
| Chopin Park | Park | 188 | Cook | 41 56 36 N | 087 45 47 W |
| Chouteau Island | Island | 127 | Madison | 38 46 07 N | 090 08 47 W |
| Chouteau Nameoki and Venice Levee | Levee | 128 | Madison | 38 44 48 N | 090 09 31 W |
| Chouteau Slough | Gut | 125 | Madison | 38 45 14 N | 090 08 16 W |
| Chrisman | Populated Place | 198 | Edgar | 39 48 13 N | 087 40 25 W |
| Chrisman Christian Church | Church | 199 | Edgar | 39 48 18 N | 087 40 43 W |
| Chrisman Elementary School | School | 200 | Edgar | 39 48 14 N | 087 40 19 W |
| Chrisman First Baptist Church | Church | 199 | Edgar | 39 48 17 N | 087 40 29 W |
| Chrisman High School | School | 197 | Edgar | 39 48 36 N | 087 40 25 W |
| Chrisman Post Office | Post Office | 199 | Edgar | 39 48 17 N | 087 40 47 W |
| Chrisman United Methodist Church | Church | 199 | Edgar | 39 48 13 N | 087 40 36 W |
| Chriss School (historical) | School | 159 | Jasper | 39 00 35 N | 088 03 53 W |
| Christ Awareness Center Church | Church | 181 | Cook | 41 45 48 N | 087 35 07 W |
| Christ Bible Center | Church | 181 | Cook | 41 41 34 N | 087 37 09 W |
| Christ Bible Center | Church | 186 | Cook | 41 36 35 N | 087 41 46 W |
| Christ Bible Church | Church | 193 | Tazewell | 40 38 26 N | 089 36 24 W |
| Christ Chapel Missionary Baptist Church | Church | 182 | Cook | 41 46 16 N | 087 39 16 W |
| Christ Chapel Missionary Baptist Church | Church | 182 | Cook | 41 49 01 N | 087 36 10 W |
| Christ Church | Church | 193 | Cook | 42 06 15 N | 087 43 47 W |
| Christ Church | Church | 217 | Cook | 41 29 20 N | 087 42 59 W |
| Christ Church | Church | 207 | Lake | 42 14 28 N | 087 52 23 W |
| Christ Church | Church | 217 | Peoria | 40 42 26 N | 089 42 59 W |
| Christ Church | Church | 243 | Woodford | 40 45 58 N | 089 28 17 W |
| Christ Church of Chicago | Church | 181 | Cook | 41 56 32 N | 087 38 50 W |
| Christ Church of Long Grove | Church | 221 | Lake | 42 10 34 N | 087 59 10 W |
| Christ Church of Oak Brook | Church | 202 | DuPage | 41 49 55 N | 087 55 47 W |
| Christ Church of the North Shore | Church | 187 | Cook | 42 02 05 N | 087 40 47 W |
| Christ Deliverance Church | Church | 180 | Cook | 41 46 52 N | 087 35 42 W |
| Christ Deliverance Church | Church | 262 | Henry | 41 14 00 N | 089 56 53 W |
| Christ English Evangelical Lutheran Church | Church | 187 | Cook | 41 54 28 N | 087 45 38 W |
| Christ Episcopal Cemetery | Cemetery | 213 | Peoria | 40 42 24 N | 089 43 02 W |
| Christ Episcopal Church | Church | 193 | Cook | 41 53 18 N | 087 49 02 W |
| Christ Episcopal Church | Church | 147 | La Salle | 41 20 59 N | 088 50 27 W |
| Christ Episcopal Church | Church | 204 | Lake | 42 21 51 N | 087 50 03 W |
| Christ Episcopal Church | Church | 299 | McHenry | 42 25 57 N | 088 36 27 W |
| Christ Episcopal Church | Church | 180 | Sangamon | 39 47 51 N | 089 38 51 W |
| Christ Episcopal Church | Church | 165 | Will | 41 31 33 N | 088 05 02 W |
| Christ Evangelical Lutheran Church | Church | 181 | Cook | 41 57 51 N | 087 42 37 W |
| Christ Evangelical Lutheran Church | Church | 195 | Cook | 41 54 22 N | 087 53 41 W |
| Christ Evangelical Lutheran Church | Church | 190 | Cook | 41 52 07 N | 087 47 21 W |
| Christ Evangelical Lutheran Church | Church | 221 | Cook | 41 37 22 N | 087 51 00 W |
| Christ Evangelical Lutheran Church of Logan Square | Church | 182 | Cook | 41 55 05 N | 087 42 01 W |