Thonon-les-Bains Population and Area (Haute-Savoie)
Largest city in France 2026: up-to-date figures for Thonon-les-Bains (Haute-Savoie)
Thonon-les-Bains: Population and Area
With 38,946 inhabitants (INSEE total population in force on January 1, 2026), Thonon-les-Bains is the 205th most populous town in France in 2026 and the 2nd most populous in the Haute-Savoie department, out of 279 communes. It covers 16 km² (10,968th largest area in France, 76th largest in the department), with a population density of 2,403 inhabitants per km², or 22 times the national average (110 inhabitants/km²), which ranks it 377th in France for density.
Thonon-les-Bains is located in the Haute-Savoie department (74), in the Auvergne-Rhône-Alpes region (formerly Rhône-Alpes), where it ranks 16th by population out of 4,025 communes. The most populous town in the Haute-Savoie department is Annecy (134,985 inhabitants); the department is home to 881,729 people over 4,388 km².
See the full ranking of communes in the Haute-Savoie department and the regional ranking: largest city in Auvergne-Rhône-Alpes.
Towns of similar size in the Haute-Savoie department: Annecy (pop. 134,985), Annemasse (pop. 37,978), Cluses (pop. 18,170), Sallanches (pop. 17,832).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 74281. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.