Châtillon Population and Area (Hauts-de-Seine)
Largest city in France 2026: up-to-date figures for Châtillon (Hauts-de-Seine)
Châtillon: Population and Area
With 36,958 inhabitants (INSEE total population in force on January 1, 2026), Châtillon is the 224th most populous town in France in 2026 and the 19th most populous in the Hauts-de-Seine department, out of 36 communes. It covers 2.92 km² (33,515th largest area in France, 27th largest in the department), with a population density of 12,657 inhabitants per km², or 116 times the national average (110 inhabitants/km²), which ranks it 25th in France for density.
Châtillon is located in the Hauts-de-Seine department (92), in the Île-de-France region, where it ranks 75th by population out of 1,266 communes. The most populous town in the Hauts-de-Seine department is Boulogne-Billancourt (120,206 inhabitants); the department is home to 1,670,575 people over 176 km².
See the full ranking of communes in the Hauts-de-Seine department and the regional ranking: largest city in Île-de-France.
Towns of similar size in the Hauts-de-Seine department: Montrouge (pop. 46,579), Bagneux (pop. 44,744), Puteaux (pop. 44,242), Châtenay-Malabry (pop. 36,275), Malakoff (pop. 30,774), La Garenne-Colombes (pop. 30,460).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 92020. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.