Fontanil-Cornillon () is a commune in the Isère department in southeastern France. It is part of the Grenoble urban unit (agglomeration). Population Twin towns Fontanil-Cornillon is twinned with: Ponchatoula, Louisiana, United States, since 1987 Monte Roberto, Italy, since 1992 Saint-Joseph-du-Lac, Quebec, Canada, since 2008 See also Communes of the Isère department References Communes of Isère Isère communes articles needing translation from French Wikipedia