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 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 |
| Childress School (historical) | School | 210 | Coles | 39 34 05 N | 088 00 06 W |
| Chili Center School (historical) | School | 207 | Hancock | 40 14 18 N | 091 05 01 W |
| Chillicothe Junior High School | School | 161 | Peoria | 40 55 18 N | 089 29 48 W |
| Chipman School (historical) | School | 209 | Kankakee | 41 11 35 N | 087 39 47 W |
| Chippewa Elementary School | School | 182 | Cook | 41 39 56 N | 087 46 03 W |
| Chippewa Middle School | School | 198 | Cook | 42 03 19 N | 087 54 29 W |
| Chippewa School | School | 201 | DuPage | 41 56 57 N | 087 55 22 W |
| Chisholm School (historical) | School | 194 | Macoupin | 39 19 29 N | 089 54 40 W |
| Chittyville Public School (historical) | School | 118 | Williamson | 37 50 01 N | 089 01 17 W |
| Chocktaw School (historical) | School | 193 | Douglas | 39 44 46 N | 088 07 30 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 |
| Chopin Elementary School | School | 183 | Cook | 41 53 49 N | 087 41 18 W |
| Chrisman Elementary School | School | 200 | Edgar | 39 48 14 N | 087 40 19 W |
| Chrisman High School | School | 197 | Edgar | 39 48 36 N | 087 40 25 W |
| Chriss School (historical) | School | 159 | Jasper | 39 00 35 N | 088 03 53 W |
| Christ Evangelical Lutheran School (historical) | School | 190 | Cook | 41 52 09 N | 087 47 22 W |
| Christ Lutheran School | School | 164 | Peoria | 40 40 25 N | 089 37 33 W |
| Christ Lutheran School | School | 198 | Whiteside | 41 46 42 N | 089 40 10 W |
| Christ School | School | 190 | Cook | 41 52 09 N | 087 47 23 W |
| Christ School | School | 187 | Cook | 41 54 26 N | 087 45 35 W |
| Christ School | School | 182 | Cook | 41 55 05 N | 087 42 02 W |
| Christ the King Lutheran School | School | 180 | Cook | 41 49 52 N | 087 36 21 W |
| Christ the King School | School | 223 | Cook | 42 05 53 N | 088 02 52 W |
| Christ the King School | School | 199 | Cook | 41 43 31 N | 087 40 27 W |
| Christ the King School | School | 225 | DuPage | 41 51 13 N | 088 00 49 W |