| Town Name | Type | Region | Province / State | County | Municipality | Population | Latitude | Longitude | |
|---|---|---|---|---|---|---|---|---|---|
| Castellvell del Camp | village | 1045 | 41.180256 | 1.097831 | Map | ||||
| Castilblanco | village | Extremadura | Badajoz | 1156 | 39.288696 | -5.087184 | Map | ||
| Castilblanco de los Arroyos | village | 4500 | 37.671730 | -5.988491 | Map | ||||
| Castilleja de Guzmán | village | Andalucía | Sevilla | 2846 | 37.408482 | -6.057277 | Map | ||
| Castilleja de la Cuesta | town | Andalucía | Sevilla | 17282 | 37.386784 | -6.054127 | Map | ||
| Castilléjar | village | 1068 | 37.717232 | -2.642339 | Map | ||||
| Castilléjar | village | 1068 | 37.716232 | -2.642834 | Map | ||||
| Castilléjar | village | 1068 | 37.717834 | -2.642679 | Map | ||||
| Castillo de Bayuela | village | Castilla-La Mancha | Toledo | 1009 | 40.099880 | -4.685198 | Map | ||
| Castillo de Locubín | village | 4091 | 37.527954 | -3.942249 | Map | ||||
| Castro del Río | village | 7587 | 37.691158 | -4.482695 | Map | ||||
| Castro Urdiales | town | Cantabria | Cantabria | 25636 | 43.384335 | -3.216258 | Map | ||
| Castuera | village | Extremadura | Badajoz | 6503 | 38.720306 | -5.546292 | Map | ||
| Catadau | village | 2712 | 39.274807 | -0.571096 | Map | ||||
| Catarroja | town | 27175 | 39.403374 | -0.402876 | Map | ||||
| Catral | village | 8926 | 38.160297 | -0.801404 | Map | ||||
| Caudete | town | 10450 | 38.706703 | -0.986798 | Map | ||||
| Cazalegas | village | Castilla-La Mancha | Toledo | 1818 | 40.009941 | -4.677262 | Map | ||
| Cazorla | village | Andalucía | Jaén | 7544 | 37.912891 | -3.003887 | Map | ||
| Cebolla | village | Castilla-La Mancha | Toledo | 3834 | 39.946804 | -4.571227 | Map | ||
| Cebreros | village | 3395 | 40.455147 | -4.465089 | Map | ||||
| Ceclavín | village | 2038 | 39.821369 | -6.773589 | Map | ||||
| Cedeira | town | Galicia | A Coruña | 4829 | 43.660103 | -8.054525 | Map | ||
| Cedillo del Condado | village | 2893 | 40.115372 | -3.925774 | Map | ||||
| Cee | town | 3597 | 42.955631 | -9.190219 | Map |