Saint-Louis Population and Area (Haut-Rhin)
Largest city in France 2026: up-to-date figures for Saint-Louis (Haut-Rhin)
Saint-Louis: Population and Area
With 23,072 inhabitants (INSEE total population in force on January 1, 2026), Saint-Louis is the 403rd most populous town in France in 2026 and the 3rd most populous in the Haut-Rhin department, out of 366 communes. It covers 17 km² (10,362nd largest area in France, 54th largest in the department), with a population density of 1,369 inhabitants per km², or 13 times the national average (110 inhabitants/km²), which ranks it 685th in France for density.
Saint-Louis is located in the Haut-Rhin department (68), in the Grand Est region (formerly Alsace), where it ranks 17th by population out of 5,115 communes. The most populous town in the Haut-Rhin department is Mulhouse (106,083 inhabitants); the department is home to 784,356 people over 3,525 km².
See the full ranking of communes in the Haut-Rhin department and the regional ranking: largest city in Grand Est.
Towns of similar size in the Haut-Rhin department: Mulhouse (pop. 106,083), Colmar (pop. 68,013), Wittenheim (pop. 15,695), Illzach (pop. 15,135), Rixheim (pop. 14,656).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 68297. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.