| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| San Antonio Este | city | Rio Negro | Argentina | -40.80 | -64.88 | 16 | 57 |
| San Antonio Oeste | city | Rio Negro | Argentina | -40.73 | -64.95 | 6 | 8690 |
| San Carlos de Bariloche | city | Rio Negro | Argentina | -41.14 | -71.30 | 2755 | 19907 |
| San Javier | city | Rio Negro | Argentina | -40.75 | -63.27 | 45 | 407 |
| San Karlos de Bariločė | city | Rio Negro | Argentina | -41.14 | -71.30 | 2755 | 19907 |
| San Lorenzo | city | Rio Negro | Argentina | -40.17 | -64.32 | 183 | 0 |
| Santa Rosa | city | Rio Negro | Argentina | -39.98 | -66.57 | 410 | 0 |
| Sauce Blanco | city | Rio Negro | Argentina | -40.47 | -63.82 | 239 | 149 |
| Sierra Colorada | city | Rio Negro | Argentina | -40.58 | -67.76 | 2509 | 1053 |
| Sierra Colorado | city | Rio Negro | Argentina | -40.58 | -67.76 | 2509 | 1053 |
| Sierra Grande | city | Rio Negro | Argentina | -41.61 | -65.36 | 830 | 10769 |
| Sierra Pailemán | city | Rio Negro | Argentina | -41.19 | -65.97 | 1669 | 231 |
| Siete Bocas | city | Rio Negro | Argentina | -39.83 | -65.22 | 282 | 0 |
| Stefenelli A | city | Rio Negro | Argentina | -39.03 | -67.53 | 830 | 16356 |