| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| O. Magnasco | city | Entre Rios | Argentina | -31.31 | -58.06 | 190 | 42379 |
| Olegario V. Andrade | city | Entre Rios | Argentina | -32.33 | -59.45 | 213 | 634 |
| Oro Verde | city | Entre Rios | Argentina | -31.83 | -60.52 | 265 | 41610 |
| Osvaldo Magnasco | city | Entre Rios | Argentina | -31.31 | -58.06 | 190 | 42379 |