Ruy-Montceau (; before August 2015: ''Ruy'') is a commune in the
Isère
Isère ( , ; ; , ) is a landlocked Departments of France, department in the southeastern French Regions of France, region of Auvergne-Rhône-Alpes. Named after the river Isère (river), Isère, it had a population of 1,271,166 in 2019.
France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
Bourbre
The Bourbre () is a long river in the Isère and Rhône departments in central eastern France. Its source is in Burcin. It flows generally north-northwest. It is a left tributary of the Rhône, into which it flows at Chavanoz.
Departments and ...
forms most of the commune's southwestern border.
Population
Population data before 1972 refer to the former commune of Ruy, before the merger with Montceau.