In Essonne · INSEE, populations légales
Juvisy-sur-Orge is the most densely populated city in Essonne, at 8,599 inhab./km², ahead of Massy (5,504 inhab./km²) and Savigny-sur-Orge (5,394 inhab./km²). At the other end, Dourdan is the least densely populated city, at 371 inhab./km².
| Rank | City | Density | Population |
|---|---|---|---|
| 1 | Juvisy-sur-Orge | 8,599 inhab./km² | 19,292 |
| 2 | Massy | 5,504 inhab./km² | 51,729 |
| 3 | Savigny-sur-Orge | 5,394 inhab./km² | 37,601 |
| 4 | Grigny | 5,343 inhab./km² | 26,842 |
| 5 | Évry-Courcouronnes | 5,110 inhab./km² | 66,919 |
| 6 | Viry-Châtillon | 5,040 inhab./km² | 30,838 |
| 7 | Corbeil-Essonnes | 4,941 inhab./km² | 54,471 |
| 8 | Morsang-sur-Orge | 4,941 inhab./km² | 21,667 |
| 9 | Arpajon | 4,898 inhab./km² | 11,698 |
| 10 | Les Ulis | 4,726 inhab./km² | 25,886 |
| 11 | Longjumeau | 4,492 inhab./km² | 21,996 |
| 12 | Athis-Mons | 4,254 inhab./km² | 36,613 |
| 13 | Saint-Michel-sur-Orge | 4,103 inhab./km² | 21,776 |
| 14 | Brunoy | 3,877 inhab./km² | 25,643 |
| 15 | Sainte-Geneviève-des-Bois | 3,777 inhab./km² | 35,438 |
| 16 | Ris-Orangis | 3,730 inhab./km² | 31,189 |
| 17 | Chilly-Mazarin | 3,649 inhab./km² | 20,443 |
| 18 | Vigneux-sur-Seine | 3,507 inhab./km² | 31,466 |
| 19 | Épinay-sous-Sénart | 3,237 inhab./km² | 11,611 |
| 20 | Palaiseau | 3,212 inhab./km² | 37,471 |
| 21 | Morangis | 2,934 inhab./km² | 14,129 |
| 22 | Igny | 2,823 inhab./km² | 10,833 |
| 23 | Yerres | 2,800 inhab./km² | 27,906 |
| 24 | Épinay-sur-Orge | 2,460 inhab./km² | 10,722 |
| 25 | Orsay | 2,222 inhab./km² | 16,498 |
| 26 | Fleury-Mérogis | 2,152 inhab./km² | 13,721 |
| 27 | Montgeron | 2,149 inhab./km² | 24,022 |
| 28 | Gif-sur-Yvette | 1,895 inhab./km² | 22,544 |
| 29 | Draveil | 1,889 inhab./km² | 30,098 |
| 30 | Saint-Germain-lès-Arpajon | 1,840 inhab./km² | 11,623 |
| 31 | Brétigny-sur-Orge | 1,822 inhab./km² | 26,658 |
| 32 | Bondoufle | 1,579 inhab./km² | 10,767 |
| 33 | Verrières-le-Buisson | 1,506 inhab./km² | 15,057 |
| 34 | Mennecy | 1,470 inhab./km² | 16,433 |
| 35 | Villebon-sur-Yvette | 1,371 inhab./km² | 10,291 |
| 36 | Saint-Pierre-du-Perray | 1,020 inhab./km² | 11,993 |
| 37 | Étampes | 584 inhab./km² | 26,857 |
| 38 | Dourdan | 371 inhab./km² | 11,415 |
The same ranking for the whole of France : The densest cities in France · The least densely populated cities in France
Scope: France, metropolitan and overseas, Corsica and the DROM included. This dataset holds every commune of 10,000 inhabitants or more, plus smaller communes famous enough to be household names, 1,131 in all. It is not the full list of 35,000 French communes, so a village can sit outside a ranking whose extreme it would otherwise hold.
Method and sources: populations are the INSEE legal populations, boundaries and coordinates come from the IGN commune registry, both served by geo.api.gouv.fr. Density is the population divided by the commune's area; distances are measured as the crow flies from the commune's centre. Data read on August 28, 2026.