Saint-Galmier, located on the river Coise, south-central Loire,[4] is a regional central city known for the mineral water Badoit produced there.

[5] During the French Revolution, Saint-Galmier was renamed Fontfortville by the revolutionaries because of his religious color,[clarification needed] where "Fontfort" means "stable fountain".

[5] Saint-Galmier is located in southeastern France, west-central Auvergne-Rhône-Alpes and east-central Loire, about 22 kilometers from the prefecture Saint-Étienne.

[8] According to the national statistics office INSEE, Saint-Galmier is part of the functional urban area (aire d'attraction des villes) of Saint-Étienne, which consists of 105 communes.

[9][10][11] INSEE also divides the town of Saint-Galmier into two "blocks" (IRIS)[4][12] to facilitate the statistics of population distribution.

[6] The current mayor of Saint-Galmier is Philippe Denis, a centrist who received 60.11% of the support rate in the 2020 municipal elections.