En todo el mundo existen al menos 27 ciudades llamadas San Carlos. A continuación se encuentra la información geográfica de todas estas ciudades.
| # | País | Región | Ciudad | Coordenadas |
|---|---|---|---|---|
| 1 | Estados Unidos | California | San Carlos | 37.507, -122.261 |
| 2 | Estados Unidos | Arizona | San Carlos | 33.346, -111.851 |
| 3 | México | Sonora | San Carlos | 27.957, -111.044 |
| 4 | México | Chihuahua | San Carlos | 29.107, -103.907 |
| 5 | México | Coahuila de Zaragoza | San Carlos | 29.028, -100.902 |
| 6 | México | Tamaulipas | San Carlos | 24.582, -98.942 |
| 7 | Estados Unidos | Texas | San Carlos | 26.296, -98.072 |
| 8 | México | Puebla | San Carlos | 19.439, -97.69 |
| 9 | México | Veracruz-Llave | San Carlos | 17.681, -94.707 |
| 10 | México | Tabasco | San Carlos | 17.833, -92.53 |
| 11 | Nicaragua | Río San Juan | San Carlos | 11.124, -84.778 |
| 12 | Panamá | Chiriquí Province | San Carlos | 8.521, -82.505 |
| 13 | Panamá | Panamá Oeste Province | San Carlos | 8.473, -79.956 |
| 14 | Ecuador | Los Ríos | San Carlos | -1.116, -79.436 |
| 15 | Perú | Amazonas | San Carlos | -5.967, -77.933 |
| 16 | Colombia | Córdoba | San Carlos | 8.796, -75.699 |
| 17 | Colombia | Antioquia | San Carlos | 7.792, -74.773 |
| 18 | Chile | Ñuble | San Carlos | -36.425, -71.958 |
| 19 | República Dominicana | Nacional | San Carlos | 18.477, -69.894 |
| 20 | Venezuela | Estado Cojedes | San Carlos | 9.661, -68.583 |
| 21 | Argentina | Salta | San Carlos | -25.893, -65.929 |
| 22 | Bolivia | Santa Cruz | San Carlos | -17.404, -63.732 |
| 23 | Argentina | Corrientes | San Carlos | -27.747, -55.896 |
| 24 | Uruguay | Maldonado | San Carlos | -34.791, -54.918 |
| 25 | Filipinas | Central Luzon | San Carlos | 15.04, 120.763 |
| 26 | Filipinas | Calabarzon | San Carlos | 13.842, 121.242 |
| 27 | Filipinas | Northern Mindanao | San Carlos | 7.96, 125.078 |