Dax Population and Area (Landes)
Largest city in France 2026: up-to-date figures for Dax (Landes)
Dax: Population and Area
With 22,972 inhabitants (INSEE total population in force on January 1, 2026), Dax is the 404th most populous town in France in 2026 and the 2nd most populous in the Landes department, out of 327 communes. It covers 20 km² (8,186th largest area in France, 141st largest in the department), with a population density of 1,166 inhabitants per km², or 11 times the national average (110 inhabitants/km²), which ranks it 825th in France for density.
Dax is located in the Landes department (40), in the Nouvelle-Aquitaine region (formerly Aquitaine), where it ranks 33rd by population out of 4,293 communes. The most populous town in the Landes department is Mont-de-Marsan (32,981 inhabitants); the department is home to 445,828 people over 9,243 km².
See the full ranking of communes in the Landes department and the regional ranking: largest city in Nouvelle-Aquitaine.
Towns of similar size in the Landes department: Mont-de-Marsan (pop. 32,981), Biscarrosse (pop. 16,203), Saint-Paul-lès-Dax (pop. 14,981), Tarnos (pop. 13,342).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 40088. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.