Soissons Population and Area (Aisne)
Largest city in France 2026: up-to-date figures for Soissons (Aisne)
Soissons: Population and Area
With 28,664 inhabitants (INSEE total population in force on January 1, 2026), Soissons is the 311th most populous town in France in 2026 and the 2nd most populous in the Aisne department, out of 797 communes. It covers 12 km² (15,345th largest area in France, 167th largest in the department), with a population density of 2,327 inhabitants per km², or 21 times the national average (110 inhabitants/km²), which ranks it 389th in France for density.
Soissons is located in the Aisne department (02), in the Hauts-de-France region (formerly Picardie), where it ranks 22nd by population out of 3,782 communes. The most populous town in the Aisne department is Saint-Quentin (53,963 inhabitants); the department is home to 534,380 people over 7,358 km².
See the full ranking of communes in the Aisne department and the regional ranking: largest city in Hauts-de-France.
Towns of similar size in the Aisne department: Saint-Quentin (pop. 53,963), Laon (pop. 24,809), Château-Thierry (pop. 15,366), Tergnier (pop. 13,213).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 02722. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.