| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cecka Mobile Home Park | city | Illinois | United States | 42.19 | -89.15 | 830 | |
| Cedar Acres | city | Illinois | United States | 41.60 | -87.98 | 830 | |
| Cedar Bluff Estates | city | Illinois | United States | 40.84 | -89.61 | 830 | |
| Cedar Brook | city | Illinois | United States | 41.56 | -90.37 | 830 | |
| Cedar Creek | city | Illinois | United States | 42.20 | -88.06 | 830 | |
| Cedar Glen | city | Illinois | United States | 41.60 | -87.98 | 830 | |
| Cedar Glen | city | Illinois | United States | 41.70 | -88.34 | 830 | |
| Cedar Hills | city | Illinois | United States | 37.60 | -88.94 | 830 | |
| Cedar Lawn | city | Illinois | United States | 41.97 | -87.66 | 830 | |
| Cedar Park | city | Illinois | United States | 38.76 | -90.10 | 830 | |
| Cedar Point | city | Illinois | United States | 41.26 | -89.13 | 830 | |
| Cedarbrook Court | city | Illinois | United States | 42.12 | -87.84 | 830 | |
| Cedarville | city | Illinois | United States | 42.38 | -89.63 | 830 | |
| Center Hill | city | Illinois | United States | 42.08 | -90.05 | 849 | |
| Centerville | city | Illinois | United States | 41.06 | -90.05 | 830 | |
| Centerville | city | Illinois | United States | 39.56 | -90.03 | 830 | |
| Centerville | city | Illinois | United States | 38.20 | -88.17 | 830 | |
| Centerville | city | Illinois | United States | 40.12 | -88.50 | 830 | |
| Centerville | city | Illinois | United States | 39.10 | -89.98 | 830 | |
| Centerville | city | Illinois | United States | 38.93 | -90.57 | 830 | |
| Centerville (historical) | city | Illinois | United States | 41.26 | -88.29 | 830 | |
| Centerville Station | city | Illinois | United States | 38.56 | -90.11 | 403 | |
| Central | city | Illinois | United States | 41.47 | -88.43 | 830 | |
| Central City | city | Illinois | United States | 38.55 | -89.13 | 830 | |
| Central City | city | Illinois | United States | 41.24 | -88.28 | 830 | |
| Central Park | city | Illinois | United States | 41.89 | -87.73 | 830 | |
| Central Station | city | Illinois | United States | 41.86 | -87.62 | 830 | |
| Centralia | city | Illinois | United States | 38.53 | -89.13 | 830 | |
| Centreville | city | Illinois | United States | 38.58 | -90.13 | 413 | |
| Century East | city | Illinois | United States | 41.42 | -87.98 | 830 | |
| Cereal | city | Illinois | United States | 40.71 | -88.35 | 830 | |
| Cerro Gordo | city | Illinois | United States | 39.89 | -88.73 | 830 |