| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cihuatehuahcan | city | Santa Ana | El Salvador | 13.99 | -89.56 | 2509 | 68242 |
| Cimarron | city | San Vicente | El Salvador | 13.62 | -88.58 | 830 | 15777 |
| Cimarron | city | Chalatenango | El Salvador | 14.22 | -89.30 | 2700 | 11676 |
| Cimarrón | city | Cabanas | El Salvador | 13.98 | -88.67 | 977 | 7117 |
| Cincuya | city | La Union | El Salvador | 13.35 | -87.92 | 177 | 29616 |
| Cinquera | city | Cabanas | El Salvador | 13.88 | -88.97 | 1669 | 6358 |
| Ciricuario | city | La Union | El Salvador | 13.50 | -87.98 | 830 | 16986 |
| Citala | city | Chalatenango | El Salvador | 14.37 | -89.22 | 2509 | 13429 |
| Citila | city | Chalatenango | El Salvador | 14.37 | -89.22 | 2509 | 13429 |
| Ciudad Arce | city | La Libertad | El Salvador | 13.84 | -89.45 | 1814 | 51551 |
| Ciudad Barrios | city | San Miguel | El Salvador | 13.77 | -88.27 | 3349 | 32381 |
| Ciudad de Nueva San Salvador | city | La Libertad | El Salvador | 13.68 | -89.28 | 3349 | 252961 |
| Ciudad de Sonsonate | city | Sonsonate | El Salvador | 13.72 | -89.72 | 830 | 91146 |