Conflans-Sainte-Honorine Population and Area (Yvelines)
Largest city in France 2026: up-to-date figures for Conflans-Sainte-Honorine (Yvelines)
Conflans-Sainte-Honorine Population
37,426 inhabitantsTOP #219
Conflans-Sainte-Honorine: Population and Area
With 37,426 inhabitants (INSEE total population in force on January 1, 2026), Conflans-Sainte-Honorine is the 219th most populous town in France in 2026 and the 6th most populous in the Yvelines department, out of 259 communes. It covers 9.90 km² (19,266th largest area in France, 81st largest in the department), with a population density of 3,780 inhabitants per km², or 35 times the national average (110 inhabitants/km²), which ranks it 215th in France for density.
Conflans-Sainte-Honorine is located in the Yvelines department (78), in the Île-de-France region, where it ranks 73rd by population out of 1,266 communes. The most populous town in the Yvelines department is Versailles (85,750 inhabitants); the department is home to 1,508,510 people over 2,284 km².
See the full ranking of communes in the Yvelines department and the regional ranking: largest city in Île-de-France.
Towns of similar size in the Yvelines department: Saint-Germain-en-Laye (pop. 47,628), Mantes-la-Jolie (pop. 43,683), Poissy (pop. 41,274), Les Mureaux (pop. 34,793), Trappes (pop. 34,788), Houilles (pop. 34,268).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 78172. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.