Sainte-Croix-en-Plaine is a place, that after the Versailles Treaty belonged to France and was situated in the administrative region Haut-Rhin.
Sainte-Croix-en-Plaine was formerly part of the German Empire. In the German Empire, the place was called Heiligkreuz. The place is now called Sainte-Croix-en-Plaine and belongs to France.