Grigny Population and Area (Essonne)
Largest city in France 2026: up-to-date figures for Grigny (Essonne)
Grigny: Population and Area
With 26,888 inhabitants (INSEE total population in force on January 1, 2026), Grigny is the 339th most populous town in France in 2026 and the 15th most populous in the Essonne department, out of 194 communes. It covers 4.87 km² (29,922nd largest area in France, 153rd largest in the department), with a population density of 5,521 inhabitants per km², or 50 times the national average (110 inhabitants/km²), which ranks it 119th in France for density.
Grigny is located in the Essonne department (91), in the Île-de-France region, where it ranks 129th by population out of 1,266 communes. The most populous town in the Essonne department is Évry-Courcouronnes (67,272 inhabitants); the department is home to 1,351,891 people over 1,804 km².
See the full ranking of communes in the Essonne department and the regional ranking: largest city in Île-de-France.
Towns of similar size in the Essonne department: Yerres (pop. 28,176), Étampes (pop. 27,034), Brétigny-sur-Orge (pop. 27,000), Brunoy (pop. 26,090), Les Ulis (pop. 25,986), Montgeron (pop. 24,316).
Sources: INSEE, official population figures in force on January 1, 2026 (total population); areas: IGN / Observatoire des territoires; INSEE code 91286. Rankings are calculated across the 34,858 communes of metropolitan and overseas France in our database.