Russo is a village and former municipality in the district of Locarno in the canton of Ticino, Switzerland.
In 1995 the municipality was merged with the other, neighboring municipalities Comologno and Crana to form a new and larger municipality Onsernone.[1]
The historical population is given in the following table:
| Year | Population |
|---|---|
| 1795 | 206 |
| 1808 | 239 |
| 1850 | 302 |
| 1900 | 248 |
| 1950 | 121 |
| 1970 | 84 |
| 1990 | 136 |