| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Salada | city | San Luis | Argentina | -32.45 | -65.37 | 2509 | 226 |
| Saladillo | city | San Luis | Argentina | -33.20 | -65.85 | 2706 | 419 |
| Salado | city | San Luis | Argentina | -32.45 | -65.37 | 2509 | 226 |
| Salinas | city | San Luis | Argentina | -31.95 | -66.57 | 1669 | 0 |
| San Ambrosio | city | San Luis | Argentina | -33.04 | -65.89 | 3704 | 149 |
| San Antonio | city | San Luis | Argentina | -32.63 | -66.89 | 2509 | 0 |
| San Eduardo | city | San Luis | Argentina | -33.22 | -66.03 | 3349 | 149 |
| San Felipe | city | San Luis | Argentina | -32.86 | -65.48 | 2828 | 498 |
| San Francisco | city | San Luis | Argentina | -32.60 | -66.13 | 2578 | 4538 |
| San Francisco del Monte de Oro | city | San Luis | Argentina | -32.60 | -66.13 | 2578 | 4538 |
| San Gerónimo | city | San Luis | Argentina | -33.14 | -66.52 | 1732 | 2456 |
| San Ignacio | city | San Luis | Argentina | -32.09 | -66.09 | 1669 | 0 |
| San Isidro | city | San Luis | Argentina | -32.54 | -65.52 | 3349 | 9 |
| San Isidro | city | San Luis | Argentina | -33.05 | -66.60 | 1998 | 8 |
| San Jerónimo | city | San Luis | Argentina | -33.14 | -66.52 | 1732 | 2456 |
| San José del Morro | city | San Luis | Argentina | -33.21 | -65.49 | 3349 | 1032 |
| San Juan | city | San Luis | Argentina | -34.72 | -65.20 | 984 | 296 |
| San Luis | city | San Luis | Argentina | -33.30 | -66.34 | 2509 | 18029 |
| San Martin | city | San Luis | Argentina | -32.41 | -65.68 | 3349 | 1702 |
| San Martín del Alto Negro | city | San Luis | Argentina | -34.14 | -66.09 | 1784 | 835 |
| San Miguel | city | San Luis | Argentina | -32.92 | -65.98 | 4471 | 149 |
| San Pablo | city | San Luis | Argentina | -32.66 | -65.31 | 2509 | 665 |
| San Pedro | city | San Luis | Argentina | -32.97 | -66.69 | 2509 | 0 |
| San Roque | city | San Luis | Argentina | -33.27 | -66.23 | 2772 | 17645 |
| San Salvador | city | San Luis | Argentina | -32.29 | -66.73 | 1669 | 0 |
| Sanctus Ludovicus | city | San Luis | Argentina | -33.30 | -66.34 | 2509 | 18029 |
| Santa Rosa | city | San Luis | Argentina | -32.34 | -65.20 | 1929 | 5787 |
| Santa Rosa | city | San Luis | Argentina | -32.32 | -66.93 | 2509 | 0 |
| Santa Rosa del Conlara | city | San Luis | Argentina | -32.34 | -65.20 | 1929 | 5787 |
| Santa Teresa | city | San Luis | Argentina | -34.22 | -66.73 | 1669 | 823 |
| Santo Tomás | city | San Luis | Argentina | -32.38 | -66.72 | 1669 | 0 |
| Sayapé | city | San Luis | Argentina | -33.87 | -65.58 | 1669 | 596 |
| Socoscora | city | San Luis | Argentina | -32.57 | -66.27 | 2509 | 0 |
| Soven | city | San Luis | Argentina | -34.22 | -65.40 | 1669 | 596 |
| Suyuque | city | San Luis | Argentina | -33.16 | -66.26 | 3723 | 1687 |
| Suyuque Nuevo | city | San Luis | Argentina | -33.14 | -66.26 | 4189 | 661 |
| Suyuque Viejo | city | San Luis | Argentina | -33.16 | -66.26 | 3723 | 1687 |