In Morbihan · INSEE, populations légales
Lorient is the most densely populated city in Morbihan, at 3,888 inhab./km², ahead of Auray (1,972 inhab./km²) and Vannes (1,674 inhab./km²). At the other end, Ploërmel is the least densely populated city, at 174 inhab./km².
| Rank | City | Density | Population |
|---|---|---|---|
| 1 | Lorient | 3,888 inhab./km² | 58,329 |
| 2 | Auray | 1,972 inhab./km² | 14,207 |
| 3 | Vannes | 1,674 inhab./km² | 55,790 |
| 4 | Lanester | 1,395 inhab./km² | 23,263 |
| 5 | Hennebont | 847 inhab./km² | 15,910 |
| 6 | Pontivy | 584 inhab./km² | 14,640 |
| 7 | Quiberon | 535 inhab./km² | 4,876 |
| 8 | Saint-Avé | 477 inhab./km² | 12,470 |
| 9 | Ploemeur | 474 inhab./km² | 18,872 |
| 10 | Guidel | 232 inhab./km² | 12,338 |
| 11 | Ploërmel | 174 inhab./km² | 10,163 |
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.