Laon Population and Area (Aisne)
Largest city in France 2026: up-to-date figures for Laon (Aisne)
Laon: Population and Area
With 24,809 inhabitants (INSEE total population in force on January 1, 2026), Laon is the 373rd most populous town in France in 2026 and the 3rd most populous in the Aisne department, out of 797 communes. It covers 42 km² (1,821st largest area in France, 4th largest in the department), with a population density of 591 inhabitants per km², or 5.4 times the national average (110 inhabitants/km²), which ranks it 1,581st in France for density.
Laon is located in the Aisne department (02), in the Hauts-de-France region (formerly Picardie), where it ranks 27th 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), Soissons (pop. 28,664), Château-Thierry (pop. 15,366), Tergnier (pop. 13,213), Chauny (pop. 12,024).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 02408. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.