Montereau-Fault-Yonne Population and Area (Seine-et-Marne)
Largest city in France 2026: up-to-date figures for Montereau-Fault-Yonne (Seine-et-Marne)
Montereau-Fault-Yonne: Population and Area
With 22,467 inhabitants (INSEE total population in force on January 1, 2026), Montereau-Fault-Yonne is the 418th most populous town in France in 2026 and the 13th most populous in the Seine-et-Marne department, out of 507 communes. It covers 9.10 km² (20,737th largest area in France, 275th largest in the department), with a population density of 2,469 inhabitants per km², or 23 times the national average (110 inhabitants/km²), which ranks it 366th in France for density.
Montereau-Fault-Yonne is located in the Seine-et-Marne department (77), in the Île-de-France region, where it ranks 153rd by population out of 1,266 communes. The most populous town in the Seine-et-Marne department is Meaux (57,360 inhabitants); the department is home to 1,484,180 people over 5,915 km².
See the full ranking of communes in the Seine-et-Marne department and the regional ranking: largest city in Île-de-France.
Towns of similar size in the Seine-et-Marne department: Combs-la-Ville (pop. 23,522), Roissy-en-Brie (pop. 23,370), Torcy (pop. 22,941), Lagny-sur-Marne (pop. 21,673), Ozoir-la-Ferrière (pop. 21,422), Mitry-Mory (pop. 20,525).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 77305. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.