Voiron Population and Area (Isère)
Largest city in France 2026: up-to-date figures for Voiron (Isère)
Voiron: Population and Area
With 22,415 inhabitants (INSEE total population in force on January 1, 2026), Voiron is the 419th most populous town in France in 2026 and the 6th most populous in the Isère department, out of 512 communes. It covers 22 km² (6,962nd largest area in France, 75th largest in the department), with a population density of 1,024 inhabitants per km², or 9.3 times the national average (110 inhabitants/km²), which ranks it 918th in France for density.
Voiron is located in the Isère department (38), in the Auvergne-Rhône-Alpes region (formerly Rhône-Alpes), where it ranks 36th by population out of 4,025 communes. The most populous town in the Isère department is Grenoble (158,303 inhabitants); the department is home to 1,324,225 people over 7,431 km².
See the full ranking of communes in the Isère department and the regional ranking: largest city in Auvergne-Rhône-Alpes.
Towns of similar size in the Isère department: Échirolles (pop. 37,710), Vienne (pop. 32,216), Bourgoin-Jallieu (pop. 30,773), Fontaine (pop. 22,237), Villefontaine (pop. 19,662), Meylan (pop. 19,107).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 38563. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.