| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Saladillo | city | La Rioja | Argentina | -29.34 | -66.88 | 2509 | 7970 |
| Salicas | city | La Rioja | Argentina | -28.37 | -67.07 | 3349 | 4061 |
| San Antonio | city | La Rioja | Argentina | -29.24 | -66.15 | 954 | 553 |
| San Antonio | city | La Rioja | Argentina | -31.09 | -66.73 | 2700 | 0 |
| San Bernardo | city | La Rioja | Argentina | -29.55 | -68.61 | 4189 | 0 |
| San Bernardo | city | La Rioja | Argentina | -29.45 | -66.01 | 944 | 894 |
| San Blas | city | La Rioja | Argentina | -28.41 | -67.09 | 3349 | 2575 |
| San Blas de los Sauces | city | La Rioja | Argentina | -28.37 | -67.07 | 3349 | 4061 |
| San Blas de los Sauces | city | La Rioja | Argentina | -28.41 | -67.09 | 3349 | 2575 |
| San Francisco | city | La Rioja | Argentina | -29.08 | -65.94 | 912 | 214 |
| San Isidro | city | La Rioja | Argentina | -29.20 | -66.04 | 925 | 889 |
| San Isidro de la Sierra de las Minas | city | La Rioja | Argentina | -31.68 | -66.58 | 1669 | 0 |
| San Juan | city | La Rioja | Argentina | -29.37 | -66.45 | 1000 | 0 |
| San Miguel | city | La Rioja | Argentina | -29.18 | -67.47 | 3349 | 3158 |
| San Nicolas | city | La Rioja | Argentina | -28.97 | -66.15 | 958 | 852 |
| San Nicolás | city | La Rioja | Argentina | -29.12 | -67.48 | 3349 | 2222 |
| San Pedro | city | La Rioja | Argentina | -28.66 | -66.92 | 4343 | 206 |
| San Pedro | city | La Rioja | Argentina | -29.53 | -66.33 | 1030 | 399 |
| San Ramon | city | La Rioja | Argentina | -30.54 | -66.07 | 1161 | 0 |
| San Ramón | city | La Rioja | Argentina | -30.60 | -66.93 | 1883 | 0 |
| San Roque | city | La Rioja | Argentina | -30.62 | -67.20 | 2509 | 0 |
| San Salvador | city | La Rioja | Argentina | -31.86 | -65.94 | 1076 | 0 |
| San Solano | city | La Rioja | Argentina | -31.48 | -65.92 | 866 | 0 |
| Sanagasta | city | La Rioja | Argentina | -29.28 | -67.02 | 3349 | 149 |
| Sanogasta | city | La Rioja | Argentina | -29.10 | -67.12 | 6709 | 149 |
| Santa Clara | city | La Rioja | Argentina | -29.54 | -68.54 | 3395 | 0 |
| Santa Cruz | city | La Rioja | Argentina | -28.48 | -67.69 | 5869 | 582 |
| Santa Florentina | city | La Rioja | Argentina | -29.13 | -67.56 | 4442 | 1473 |
| Santa Rita de Catuna | city | La Rioja | Argentina | -30.95 | -66.22 | 1669 | 1127 |
| Santa Rosa | city | La Rioja | Argentina | -31.24 | -66.66 | 2509 | 0 |
| Santa Teresita | city | La Rioja | Argentina | -28.60 | -66.55 | 2509 | 676 |
| Santo Domingo | city | La Rioja | Argentina | -28.55 | -67.67 | 5869 | 1456 |
| Santo Domingo | city | La Rioja | Argentina | -29.29 | -66.28 | 1043 | 672 |
| Sarmiento | city | La Rioja | Argentina | -29.15 | -67.48 | 3520 | 3243 |
| Schaqui | city | La Rioja | Argentina | -28.48 | -67.13 | 3523 | 0 |
| Sepultura | city | La Rioja | Argentina | -28.45 | -69.11 | 12588 | 0 |
| Shaqui | city | La Rioja | Argentina | -28.48 | -67.13 | 3523 | 0 |
| Siciliano | city | La Rioja | Argentina | -29.38 | -67.82 | 6023 | 9 |
| Sierra Brava | city | La Rioja | Argentina | -29.72 | -65.77 | 928 | 894 |
| Solca | city | La Rioja | Argentina | -30.77 | -66.47 | 2926 | 0 |
| Sunchal | city | La Rioja | Argentina | -29.80 | -66.58 | 1161 | 478 |
| Suriyaco | city | La Rioja | Argentina | -28.53 | -67.15 | 4189 | 0 |