Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Cedar Park | Park | 220 | Cook | 41 29 01 N | 087 40 24 W |
| Cedar Park | Park | 196 | Cook | 41 33 59 N | 087 39 37 W |
| Cedar Park | Populated Place | 128 | Madison | 38 45 20 N | 090 06 14 W |
| Cedar Park Cemetery | Cemetery | 188 | Cook | 41 39 56 N | 087 38 38 W |
| Cedar Point | Populated Place | 201 | La Salle | 41 15 47 N | 089 07 32 W |
| Cedar Point Camp | Locale | 177 | Williamson | 37 37 36 N | 089 07 53 W |
| Cedar Point School (historical) | School | 151 | Saline | 37 51 45 N | 088 35 45 W |
| Cedar Ridge Airport | Airport | 198 | Hancock | 40 32 35 N | 091 19 51 W |
| Cedar Ridge Campground | Locale | 239 | Ogle | 41 59 37 N | 089 28 33 W |
| Cedar Ridge Primitive Campground | Locale | 188 | Kendall | 41 37 42 N | 088 32 26 W |
| Cedar Ridge School (historical) | School | 228 | Henderson | 40 54 58 N | 090 48 24 W |
| Cedar Street Bridge | Bridge | 134 | Tazewell | 40 40 39 N | 089 36 01 W |
| Cedarhurst Cultural Center | Building | 171 | Jefferson | 38 19 37 N | 088 55 27 W |
| Cedarvale Cemetery | Cemetery | 236 | McHenry | 42 26 10 N | 088 16 35 W |
| Cedarville | Populated Place | 264 | Stephenson | 42 22 33 N | 089 37 59 W |
| Cedarville Cemetery | Cemetery | 248 | Stephenson | 42 23 02 N | 089 38 28 W |
| Ceder Grove Missionary Baptist Church | Church | 183 | Cook | 41 47 15 N | 087 37 31 W |
| Celebration Fellowship Church | Church | 214 | Will | 41 43 13 N | 088 05 45 W |
| Celestial Church | Church | 245 | Winnebago | 42 18 57 N | 089 07 17 W |
| Celestial Church of Christ | Church | 179 | Cook | 41 45 57 N | 087 36 45 W |
| Celestial Church of Christ | Church | 180 | Cook | 41 47 53 N | 087 35 57 W |
| Celia Gregg Memorial African Methodist Episcopal Church | Church | 180 | Cook | 41 37 21 N | 087 31 59 W |
| Cement Hollow | Valley | | Pope | 37 21 21 N | 088 30 40 W |
| Cement Hollow | Valley | | St. Clair | 38 29 38 N | 090 12 43 W |
| Cemeter Genessee Cemetery | Cemetery | 233 | Whiteside | 41 54 09 N | 089 50 28 W |
| Cenacle Retreat House | Building | 191 | Cook | 41 40 56 N | 087 40 28 W |
| Cenacle Retreat House | Building | 182 | Cook | 41 55 30 N | 087 38 32 W |
| Cenacle Retreat House | Building | 213 | DuPage | 41 49 45 N | 088 11 07 W |
| Centenary Cemetery | Cemetery | 191 | Cass | 39 55 55 N | 090 03 05 W |
| Centenary Cemetery | Cemetery | 209 | Lee | 41 43 32 N | 089 32 57 W |
| Centenary Church | Church | 227 | De Witt | 40 10 41 N | 088 51 56 W |
| Centenary Church | Church | 170 | Lawrence | 38 39 30 N | 087 54 34 W |
| Centenary Church (historical) | Church | 165 | Bond | 38 53 36 N | 089 28 44 W |
| Centenary Church (historical) | Church | 190 | Cass | 39 55 51 N | 090 03 03 W |
| Centenary School (historical) | School | 193 | Cass | 39 56 16 N | 090 02 27 W |
| Centenary United Methodist Church | Church | 184 | Morgan | 39 44 02 N | 090 13 32 W |
| Centennial Beach | Beach | 204 | DuPage | 41 46 18 N | 088 09 21 W |
| Centennial Bridge | Bridge | 165 | Rock Island | 41 30 52 N | 090 34 52 W |
| Centennial Building | Building | 180 | Sangamon | 39 47 48 N | 089 39 14 W |
| Centennial Chapel (historical) | Church | 218 | Woodford | 40 40 37 N | 089 06 14 W |
| Centennial Chapel Cemetery | Cemetery | 219 | Woodford | 40 40 36 N | 089 06 14 W |
| Centennial Christian Church | Church | 255 | McLean | 40 28 40 N | 088 58 22 W |
| Centennial East Hall | Building | 237 | McLean | 40 30 25 N | 088 59 23 W |
| Centennial Ebenezer Church | Church | 206 | Adams | 40 08 12 N | 091 08 01 W |
| Centennial Elementary School | School | 198 | Kendall | 41 39 19 N | 088 32 13 W |
| Centennial Elementary School | School | 190 | La Salle | 41 09 03 N | 088 50 40 W |
| Centennial Elementary School | School | 264 | Ogle | 41 59 00 N | 089 34 20 W |
| Centennial Elementary School | School | 226 | Woodford | 40 44 40 N | 089 01 10 W |
| Centennial Fountain | Locale | 175 | Cook | 41 53 19 N | 087 37 03 W |
| Centennial Gymnasium | Building | 225 | Woodford | 40 44 38 N | 089 01 11 W |
| Centennial Hall | Building | 182 | Cook | 41 55 31 N | 087 39 12 W |
| Centennial High School | School | 224 | Champaign | 40 06 23 N | 088 16 56 W |
| Centennial Junior High School | School | 206 | Macon | 39 51 13 N | 088 56 10 W |
| Centennial Missionary Baptist Church | Church | 182 | Cook | 41 49 01 N | 087 36 20 W |
| Centennial Park | Park | 221 | Champaign | 40 06 02 N | 088 17 02 W |
| Centennial Park | Park | 230 | Cook | 41 39 12 N | 088 00 39 W |
| Centennial Park | Park | 193 | Cook | 42 04 14 N | 087 44 00 W |
| Centennial Park | Park | 180 | Cook | 42 02 51 N | 087 40 25 W |
| Centennial Park | Park | 186 | Cook | 42 05 51 N | 087 42 54 W |
| Centennial Park | Park | 195 | Cook | 42 00 30 N | 087 50 48 W |
| Centennial Park | Park | 210 | Cook | 42 07 43 N | 087 57 56 W |
| Centennial Park | Park | 208 | Cook | 41 35 12 N | 087 48 15 W |
| Centennial Park | Park | 186 | Cook | 41 43 19 N | 087 47 10 W |
| Centennial Park | Park | 184 | Cook | 41 39 30 N | 087 39 51 W |
| Centennial Park | Park | 222 | DuPage | 41 56 42 N | 088 01 43 W |
| Centennial Park | Park | 205 | DuPage | 41 46 14 N | 088 09 27 W |
| Centennial Park | Park | 185 | La Salle | 41 20 11 N | 089 07 35 W |
| Centennial Park | Park | 197 | Lake | 42 12 33 N | 087 50 03 W |
| Centennial Park | Park | 195 | Whiteside | 41 46 03 N | 089 41 04 W |
| Centennial Plaza Shopping Center | Locale | 218 | DuPage | 41 56 43 N | 088 01 25 W |
| Centennial Residence Hall | Building | 198 | Adams | 39 56 33 N | 091 23 05 W |
| Centennial School | School | 236 | DuPage | 41 58 23 N | 088 10 30 W |
| Centennial School | School | 240 | McLean | 40 29 14 N | 088 58 35 W |
| Centennial School (historical) | School | 162 | Crawford | 38 57 50 N | 087 35 51 W |
| Centennial School (historical) | School | 193 | Iroquois | 40 47 00 N | 087 54 21 W |
| Centennial School (historical) | School | 183 | Jersey | 39 07 25 N | 090 21 55 W |
| Centennial School (historical) | School | 213 | Knox | 40 55 02 N | 090 03 29 W |
| Centennial School (historical) | School | 245 | Knox | 41 06 25 N | 090 18 25 W |
| Centennial School (historical) | School | 185 | Livingston | 41 03 14 N | 088 47 35 W |
| Centennial School (historical) | School | 202 | McDonough | 40 25 21 N | 090 54 09 W |
| Centennial School (historical) | School | 184 | Peoria | 40 34 50 N | 089 46 29 W |
| Centennial School (historical) | School | 220 | Rock Island | 41 21 20 N | 090 38 48 W |
| Centennial School (historical) | School | 240 | Stark | 41 08 10 N | 089 55 35 W |
| Centennial School (historical) | School | 279 | Stephenson | 42 16 40 N | 089 44 41 W |
| Centennial School (historical) | School | 270 | Stephenson | 42 22 29 N | 089 25 37 W |
| Centennial School (historical) | School | 206 | Vermilion | 40 17 33 N | 087 38 00 W |
| Centennial School (historical) | School | 229 | Vermilion | 40 24 51 N | 087 54 50 W |
| Centennial United Methodist Church | Church | 230 | Winnebago | 42 15 58 N | 089 05 21 W |
| Centennial West Hall | Building | 237 | McLean | 40 30 23 N | 088 59 24 W |
| Center Cass School | School | 236 | DuPage | 41 44 10 N | 088 00 48 W |
| Center Cemetery | Cemetery | 168 | Fayette | 38 53 21 N | 088 59 23 W |
| Center Cemetery | Cemetery | 207 | Livingston | 40 53 04 N | 088 52 37 W |
| Center Cemetery | Cemetery | 179 | Shelby | 39 16 29 N | 088 51 46 W |
| Center Chapel (historical) | Church | 216 | De Witt | 40 05 02 N | 088 52 43 W |
| Center Church | Church | 216 | McDonough | 40 35 15 N | 090 37 04 W |
| Center Church | Church | 140 | Pulaski | 37 12 17 N | 089 07 51 W |
| Center Church (historical) | Church | 171 | Fayette | 38 53 17 N | 088 59 23 W |
| Center Clyde Cemetery | Cemetery | 237 | Whiteside | 41 52 37 N | 089 57 16 W |
| Center Clyde School (historical) | School | 221 | Whiteside | 41 53 55 N | 089 56 54 W |
| Center Community Church | Church | 192 | Shelby | 39 14 40 N | 089 02 38 W |
| Center Elementary School | School | 161 | Grundy | 41 21 45 N | 088 25 19 W |
| Center Elementary School | School | 242 | Stephenson | 42 17 20 N | 089 36 28 W |
| Center for Black Studies | Building | 262 | DeKalb | 41 55 53 N | 088 46 00 W |
| Center for Effective Communication | School | 182 | Cook | 41 52 51 N | 087 38 03 W |
| Center for Psychoanalytic Study | School | 181 | Cook | 41 52 59 N | 087 37 29 W |
| Center for the Visual Arts | Building | 238 | McLean | 40 30 23 N | 088 59 26 W |
| Center for Theological Studies | School | 182 | Cook | 41 54 37 N | 087 42 00 W |
| Center Grove Cemetery | Cemetery | 232 | Warren | 40 52 37 N | 090 45 35 W |
| Center Grove Methodist Cemetery | Cemetery | 193 | Christian | 39 22 16 N | 089 19 16 W |
| Center Grove School (historical) | School | 196 | Bureau | 41 21 23 N | 089 32 53 W |