The canton of Roanne-Sud is a French former administrative division located in the department of Loire and the Rhone-Alpes region. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had 36,417 inhabitants (2012).Populations légales 2012: 42 Loire, INSEE

The canton comprised the following communes:

Lentigny Ouches Pouilly-les-Nonains Riorges Roanne (partly) Saint-Jean-Saint-Maurice-sur-Loire Saint-Léger-sur-Roanne Villemontais Villerest

See also Cantons of the Loire department

References