Belfort Population and Area (Territoire de Belfort)
Largest city in France 2026: up-to-date figures for Belfort (Territoire de Belfort)
Belfort: Population and Area
With 46,662 inhabitants (INSEE total population in force on January 1, 2026), Belfort is the 153rd most populous town in France in 2026 and the most populous in the Territoire de Belfort department, out of 101 communes. It covers 17 km² (10,173rd largest area in France, 3rd largest in the department), with a population density of 2,729 inhabitants per km², or 25 times the national average (110 inhabitants/km²), which ranks it 327th in France for density.
Belfort is located in the Territoire de Belfort department (90), in the Bourgogne-Franche-Comté region (formerly Franche-Comté), where it ranks 3rd by population out of 3,685 communes. It is the most populous town in the Territoire de Belfort department, which is home to 143,144 people over 609 km².
See the full ranking of communes in the Territoire de Belfort department and the regional ranking: largest city in Bourgogne-Franche-Comté.
Towns of similar size in the Territoire de Belfort department: Delle (pop. 5,698), Valdoie (pop. 5,394), Beaucourt (pop. 5,029).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 90010. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.